Ultimate Mac Pro 5,1 One More Thing... Enable_GOP

[@MacSoundSolutions]

Important Note!!!!!!!!! If your Mac Pro is still a 2009 4,1 you need to do the 5,1 firmware update first before doing EnableGOP process. Also If you are using a Sonnet McFiver or other Sonnet cards you may run into an issue. The McFiver stops EnableGOP from working when holding down the option / alt key after installing EnableGOP. I had to remove my Opencore and Windows drive to be safe, install my Mojave drive and then I could boot into Mojave with my RX6800XT and get the Apple Bootscreen. It's a strange bug with the McFiver and possibly other Sonnet cards when holding down option at boot which is what you have to do to get EnableGOP to load before the Opencore boot picker if your using Opencore.

[@techpchouse]

but we can use them after flashing with GOP or?

[@MacSoundSolutions]

@@techpchouse yes, and you don't need to remove them to do the flashing, just when you want to use EnableGOP if your using Opencore you have to either pull the McFiver or easier pull opencore and windows if you have it installed and boot into a Mojave drive which will then give you the boot screen no need to hold down option. I have to try this again as it's been a while. might have to make a follow up video....

[@FinancasDoCaca]

I did the process and disabled system protection, but even so, when installing firmware 5.1, the following error appears on the screen: The program has enconuntered an error: 5570

[@MacSoundSolutions]

@@FinancasDoCaca is your Mac Pro a 5,1? If it’s a 4,1 You need to do the 5,1 firmware update first.

[@FinancasDoCaca]

HI, it's a Mac Pro from 2009 4.1, I want to update it to 5.1, watch your video but unfortunately it gives me an error, I've already tried updating the motherboard firmware 3 times without success. @@MacSoundSolutions

[@Epicgamer_Mac]

You kept saying that it was a really long and detailed video. But personally, I didn’t think it was long, and I enjoyed every minute of it! Thanks a lot for the effort and time put into this. Very helpful.

[@MichelangeloVisconti]

WHOAAAAAA!!!!!! Completely miss this fork / project. This is insanely awesome!!! I will never stop to thank you Lance for all the support in all these years for who still use Mac Pros like us! A big thank you also to all the amazing developers involved!

[@albatrossrap]

Thanks for this video, it's a great piece of information for cMP community

[@duophon17]

@Mac Sound Solutions inc. The best and most informative "YT-Channel" for "Classic Mac Pro" users who work in the audio-recording! Thanks for that, please keep it up !!!

[@elminero49]

I thought I was done upgrading my 5,1. Now it's "One More Thing..." Thanks a lot Lance.

[@softhanboltd.4180]

I know what you feel XD

[@FransvandenBergeMuziekschuur]

I now own two Mac Pro's with 128gb ram, dual 6 cores and two ssd's. One of the two Mac Pro's has an HD3 system in it running PT8HD. And I bought two digidesign 192's. Using it with a year ago acquired digidesign Focusrite Control24. Your channel confirmed me to go this route. Thank you for the video's.

[@MacSoundSolutions]

Nice

[@FransvandenBergeMuziekschuur]

@@MacSoundSolutions the second Mac Pro will be used to place a HD native card in and attach to two more 192 converters. So they can play into the 8 stereo inputs. So I can bounce back and forth. Using the second one with either Sonoma or the version before that. So I can go with that machine to Pro tools ultimate.

[@brian.m89]

Great video Lance! Doing a fresh install of OC on my cMP 5,1. Piecing together all the things to get this cMP up and running. Appreciate your videos man! Great work!

[@elevatorium]

Thank you for such a well-spoken, thought out video. I've been wanting to do this, but everyone's directions/instructions was a little too chaotic. You did it smoothly and clearly.

[@opentheskyy7]

It's one more thing... I subscribed to your channel because it's awesome. Thank you for your work and contribution to the Mac Pro 5,1 user community!

[@MacSoundSolutions]

Thanks!

[@softhanboltd.4180]

I finally pulled myself together and "grew some extra balls for it" - IT DID IT - IT WORKS !!! I have SAPPHIRE PULSE RADEON RX 580 4G GDDR5 DUAL HD MI/DVI-D/DUAL DP OC W/BP (UEFI) Though the loading screen has for a second in the middle of the load some "neon pixel stripe rain", but it works - loads nicely with "option key" to the Startup Manager drive picker. Thank you and Joerg and all the devs for the hard work, support and helping to keep up the community. P.S. Don't forget to "reenable SIP" - csrutil enable

[@MacSoundSolutions]

Congrats and what OS are you using?

[@softhanboltd.4180]

@@MacSoundSolutions Currently I am using Mojave 10.14.6: But my next steps would be(by following your steps): - set up OC for Monterey and to set on 2nd bay ssd(separated partitions) - partition 1 OSX update to Monterey - partition 2 windows11 natively Currently I am watching your video about it. It is 2 years old and OC version was 0.7.5 that time, I hope today's version 0.9.7 works as well.

[@juanKme]

I pulled myself as well but it didn't work as I expected... I have a GTX1070ti but no bootscreen sadly, however it feels great to have a clean reconstructed boot ROM though!

[@mitfreundlichengrussen1234]

Just performed the thing and all is perfect! Thanks a million for the encouragement!

[@carrisar]

Thanks a lot again, for your video, and for all your work around the 5.1. It´s my second 5.1 with EnableGop, working, and it´ts thanks to your video!!!! Again!

Me alegra que existan personas trabajando para solucionar estos problemas. Gracias.

[@HOLLYWOODUNAPOLOGETIC]

Right on, Lance. Right on. Thanks for what you do. I saved this and have to come back to it later on. I'm planning on slowly updating one of my 5, 1 machines, using much of what you shared with us in the last video. I left a comment there and yes, "it's fast enough". Ha! Thanks again man!

[@Technics69]

Thank you Lance. You do a great job with these Mac Pro videos and a lot of us in the community find them very useful and informative! Please keep it up! 👍

[@brightboydesigns8325]

Log another success story! 2010 5.1, 10.14.6, Sapphire Pulse Radeon RX580. Macschrauber was a pleasure to deal with in getting the boot ROM rebuilt and he even provides an extra rebuilt .bin file with Enable GOP 1.4 already injected

[@MacSoundSolutions]

Yes he did the same for me and he went the extra mile because I was having issues.

[@marcouellet]

Thank you so much for taking the time to make these tutorials. Even though it's a lot of work and you might consider that not a lot of people watch them (in this case in particular), they are SOOOOOOOOO pertinent, well made and useful. Just upgraded 2 MP 5,1. Went flawlessly. Kudos!

[@Doesntcompute2k]

Well I just came upon this video, and your channel, so I had not seen the previous video. I have subscribed to your channel and brought up the other video to watch. Thank you! See, I'm NOT A MAC PERSON. I say this as I have (only) an iMac G5, Power Mac G5 Dual, five Mac Pro Xeon Dual

[@robertchamberlin2362]

Great video Lance! I followed the steps and got the file ready to flash just need to build the courage to hit the flash button.

[@softhanboltd.4180]

Me too :D. P.S I wrote you to the ig.

[@PoundNetTexas]

Thanks Lance. I managed to upgrade my bootrom with the enableGOP code. Everything seems to work great. My bootrom was healthy and only had MTC counter 8-10

[@PatrickPatla]

Thank you so much for this video. I've been scared of doing this, you did the right amount of warning which made me read everything twice and watch this video twice. Everything went great and I LOVE have the boot screen now. Thank you again.

[@Ev1lHaX0r]

Thank you for this extremely detailed and well paced guide that we can all follow along with.

[@samuelmiller2969]

I cannot express the joy I felt after this working flawlessly! Thanks!

[@rict7717]

Thank you This was so easy thanks to your instructions. It’s such an amazing community that not only keeps these machines alive, but also allows first time users like myself to get the most out of such an epic machine. It was my grail machine & couldn’t afford it back in the day, but now I’m happy to have & use one for basic tasks & fun

[@BigJimSlade67]

Thanks so much for this! Very much appreciated!👍🏻

[@imac7531]

Worked first time, i can finally use my GTX 1080ti on my 2012 MacPro. Thank you so much Sir. Great video

[@carrisar]

Thanks so much for your video, and in regular for all your work around the 5.1. Seen the video from beginning to end. Fantastic word and labour of information; worked for me on a MacOs Server 2012 (technically same as a 5.1) Having boot screen with so many graphic cards; It´s really ONE MORE THING about the 5.1 after all these years.

[@fookoo567]

WOw!!! looking into it now Lance Thanks!!!

[@retoxdafreak9033]

Hi Mac Sound Solution, everythink worked flawlessly! What a nice surprise that I finally found your channel and the love you put into bringing these marvellous machines technically into the present time, thank you so much! Have a nice weekend ... 🥳

[@neytirisbest]

Hey Lance, can you read thoughts? Mine? This was exactly what I was thinking about today! I got my MP 5,1 now pretty good, 12 cores Westmere, 64 Gigs of RAM, Monterey coming from NVMe, added a (PC-) RX580, everything´s great BUT: no bootscreen... (though they sold me the GPU with a patch, but that was obiously overwritten by OCLP....) Now, I have to sleep a night over it, but I think I will risk it so far no error messages occur beforehand. That would be fantastic cause I could possibly use (fuc..) Windows for games from a seperate HDD without a VM. I really appreciate your work, thank you so much! Dear greetings from Germany (and please keep your fingers crossed for me and the 5,1). Frithjof

[@MacSoundSolutions]

If you hold down the option key when booting you should get the Apple boot picker from your video card if it is actually patched, Opencore does not over right the efi on the video card. Just gives you the bootloader when there isn’t one. Or if you pull out the Opencore drive you should get the bootscreen with a Mojave drive installed no need to hold down option.

[@neytirisbest]

@@MacSoundSolutions Hi lance, thanks for the hint, I ´ll try again. But so far that didn’t work. The problem is that the card was only „patched“ in the Mac-EFI but not in the GPU hardware itself. I ´ll give you response if it works. Greets.

[@petrdemuth4963]

Mac Pro 5.1 flashed from 4.1 running 5600XT worked. Thank you

[@13lobos]

Thank you, Lance! This was an amazing tutorial as usual. I was able to enable the native Apple boot picker on my 2009 4,1 Mac Pro thanks to your video! A special thank you to Mr. MacSchrauber for taking the time to fix my original bootrom. You are awesome, sir!

[@tlawrenceware3509]

Thank you for posting. I watched it and I don't have a Mac Pro. I always wanted one and I might grab one.

[@deanshull4063]

Perfect video to watch on a rainy day. Thoroughly enjoyed it!

[@skip741x3]

Seriously cool that this can be done! Im probably gonna pass on doing it for 2 reasons... I use an rx570 and the boot screens are there already ..Im not worried about having to throw the gt120 into it for an emergency.. ..I had a hell of a time with a windows pc that I added nvme boot capabilities to its rom..similiar process of injecting a driver into the original rom and reflashing... it Did work but unfortunately, I had to try the process a 2nd time and the flash was Within the windows enviroment... The flash process that worked fine b4 decided to halt at 3/4 of the way through and froze my pc.. only thing I could do was a hard shutdown and you guessed it, my bios was bricked ..I just ended up swapping in a used motherboard, as the bios is soldered in.. cost 10 bucks and alot of grief... Ironically, I Had nvme boot capabilities with the opencore that I used on that dual boot pc/hacintosh machine... I never bothered to do the bios flash mod on it after that.. there was no need and I didnt want to take the risk again...The novelty of adding nvme boot capalities or the ability to have a native bootscreen with any card, it IS wicked cool though!

[@MacSoundSolutions]

Yes not really needed if you use opencore, but I like to tinker I can’t help myself and it is very cool that it can be done😎

[@homestudiotutorials]

Great video , very precise and comprehensive, I will be doing this soon

[@quicksite]

Hey man, I had that awesome last version of the legendary Mac Pro 5,1 and kept upgrading it for years and years, til it finally needed some repairs that were no longer moving me forward--- And due to my needing to economize, my Mac tech advised me to get what I could then -- iMac M1 (2020) + a 5-bay docking station from Sabrent in place of all my huge internal drive bays in the Mac Pro. I was sad to see it go... but damn it was heavy fully loaded!

[@TheLiowa]

Thanks a lot Lance for really helpful video, thanks for nice and clear explanation ✌🙂 It resolved my issue , thanks again 😉

[@RenatoPernett]

Is this working with the latest Opencore 0.9.9? Thank you for your channel content man! Really helpful.

[@MacSoundSolutions]

Enable_GOP works with or without Opencore. The version of Opencore does not matter, No need to install 0.9.9 it has no changes concerning Mac Pro 5,1 so Martin is not bothering to update it for now his latest is 0.9.8

[@RenatoPernett]

@@MacSoundSolutionsthank you for your reply. I did everything just the way you did before flashing, but I got this message when analyzing the BootRom: “You got items in your Fsys stream: … (SON is missing).” Apart from that everything showed healthy, OK, with no windows certificates, etc. Do you think it’s a problem? Or could I flash it with no problem? I already wrote to the mail attached in the video description and read the forums. BTW I’m using his latest tool version “10-3-2024” which includes Fsys messages. I wonder if you would get that message too if you actually use the latest version as well…

[@macschrauber1982]

@@RenatoPernett As the message explains further: If you have no problems using Apple Services, like Messages and others - you can go ahead. If you already can't use those services Apple is not listed your machine as valid. If the latter, then we should adjust that missing Fsys data point.

[@RenatoPernett]

@@macschrauber1982 yes. Indeed that wasn’t a real problem. Everything worked. And thank you so much for your reply! I’m now about to install for the first time MLo’sOC, Monterey, and planning to use my FireWire Fireface 800 unit and my USB mixer and synths with the 5,1 MasterRace.

[@_emjaywlz_]

Thanks!

[@MacSoundSolutions]

thanks man much appreciated!

[@starsk13]

Thank you so much ! I am a bit afraid but it's something I can do one day :) I already flashed custom bios on graphic cards, including my current RX6600XT. Best regards from France.

[@TheAppleLab]

thanks for the mention lance...

[@MacSoundSolutions]

your video helped me figure it out although when I saw errors after analyzing my rom.bin with the dump tool I sent it over to Macschrauber for a rebuild. Better safe than sorry. I had a major problem though and need to mention it, my Sonnet McFiver was blocking EnableGop from being able to load if I held down the option key and it was driving my crazy I would get the grey screen but no Apple boot screen. Martin Lo mentioned that it might be the issue and sure enough it was. Pulled out my Opencore drive and booted into Mojave without holding option and there was my Apple bootloader even with the rx6800xt and no driver for it in Mojave.

[@TheAppleLab]

that was a great benefit since the very first version of enableGOP. booting every version of macOS with a modern gpu. 😌

[@josefranklinbriceno8344]

Thank you So much Lance! the dedication you put into making this video tutorial its perfection, your channel is such a great finding. glad am here. I take my hat off and salute you, watching all the way from Ecuador.

[@MacSoundSolutions]

Thanks for the kind words Jose.

[@donhowell3372]

Cool ... just flashed my MacPro .. all is good between yours and Jorge youtubers .. made it thru the finish line .. and ya pulled the Win11 SSD Drive out before doing this

[@MacSoundSolutions]

Nice! Glad it worked out. Super Thanks are welcome 😉 and or donations to developers.

[@softhanboltd.4180]

Hi, Thanks for the video - not a second too long. Is it it really necessary to have 2TB SSD - just for Open Core(or do you keep anything else on your Bay1)?

[@MacSoundSolutions]

The drive can be any size, I just use it as my main audio project drive. Opencore is stored on the efi which is a very small partition.

[@smileysmile]

Thanks so much, the apple is back on my mid-2010 5,1 RX580 screen! FYI, I had to add a space between desktop and the / in the terminal command cd desktop /EnableGop to get it to work, don't know why.

[@macschrauber1982]

so you had no EnableGop directory on your desktop, you did: cd desktop, when you add a space the next path is an argument, in this case, a useless.

[@josemedeiros007]

Great information and video Lansing.

[@davidgordon9180]

You, Lance, are one stellar guy!

[@jpreza]

Hey Lance, thank you for your informative videos about the Mac Pro 4,1/5,1. As an aside, and you may have covered this before: do you prefer using OpenCore, Clover, or OCLP? I find that OCLP is pretty much hands off, although I don't know if I'm missing tweaks or enhancements only available in the other two?

[@MacSoundSolutions]

@@jpreza clover is for hackintosh only except for using it to mount your efi. OCLP holds your hand through the install but does patch the OS. For the cleanest running 5,1 Martin Lo Opencore package is the best but you can only run up to Monterey.

[@douglas_edward]

Thanks for the time and effort you put into this. I'm glad it isn't a minute shorter. There is nothing in here that can be cut out. I've been following ebableGOP since it launched but haven't decided to do it yet. Seems to me it does introduce a risk that you wouldn't have without it. If one boots with option held down, then uses the Apple boot picker to select a Windows drive (EFI installation), then it would launch Windows without OpenCore protection and lead to certificates being written to the boot ROM and ultimate corruption of the Boot ROM. Am I right?

[@MacSoundSolutions]

Good point, but seeing Windows 11 is a UEFI install I don’t think it will show up as a boot choice with native Mac boot loader, if it’s windows 10 legacy install then maybe that could then happen but you would have to select the windows drive. Good point though and I will look into it.

[@douglas_edward]

@@MacSoundSolutions yes I think you’re right. I may do the enableGOP on a free weekend this winter. Thanks again for the excellent video. And, using the one more thing…. line was sharp.

[@RobbertvanGomNeumann]

Hi Lance, thanks for this great video. Do you know if there’s any specific for the AMD Radeon VII ?

[@fleonard4]

One down, two to go! Thanks! I did just have very strange keyboard behavior, and had to unplug, and plug back in my keyboard. Other than that, it went ok, and I wanted to note something for others. I was wondering if it even worked, because no white mac boot picker. But, I figured it out. I have 128GB RAM, and my display goes to sleep during the cold boot. By the time it wakes back up, it's to the OC boot picker already. My NVME boot is very fast, so the only way I could verify the apple boot picker was to hold option. I had been putting this off and waiting to see if it was going to come out of of beta, or if people were bricking their Macs. Your video made me bite the bullet. Also, I have a ch341a flash programmer, so I was almost thinking of backing it up first to be safe, but I didn't. I do wonder if someone bricked one, if it could be flashed with their backup dump using the programmer. I have 2 more to go, so hopefully, I won't find out the hard way.

[@MacSoundSolutions]

If you have opencore running you have to hold option for EnableGOP to load first as you have found, if you remove your opencore drive you can only boot into a supported Mac OS like Mojave and then there is no need to hold down the option key it will just boot like a regular Mac with enable gop loading the Apple boot screen. As far as Windows goes you just don’t want to boot into Windows without Opencore running, so if you are using EnableGOP via option to boot you don’t want to boot into windows but not sure you can see the windows drive to select it because we are not using bootcamp. I have not tried it myself. I should try putting Mojave in, remove opencore hold option at boot and see if windows 11 shows up, I don’t think it will because it’s a UEFI install and regular normally Macs only see legacy windows installls via boot cam so maybe it’s not even an issue. Will check this out when I have a minute,

[@clementmartin2289]

Many thanks for this very clear video. I followed the instructions step by step, and everything worked well on my MacPro 5.1 early 2009 2x3.46, as long as I kept my old ATI Radeon card. I was able to boot under Monterey (OCLP). However, as soon as I switched to the RX580 Pulse Sapphire Dual BIOS, I experienced what another user refers to as a 'neon pixel stripe rain' on both the startup and boot screen. This issue persists when I choose the hard drive with Monterey installed, but it disappears when I select my backup disk under Catalina. I set the dual BIOS switch to the right on the RX580, which I believe is the gaming position, but it didn't change anything. The only thing I haven't touched is the SIP; I don't know if that could be the reason. Has anyone had a similar experience? Should I reflash my ROM since I switched the card? I'm a bit lost and would like to avoid potentially bricking my machine with a risky manipulation. Thank you for your insights. Clement

[@MacSoundSolutions]

Did you install the latest version 1.4? I have heard RadeonVII get weird lines on boot screen but not rx580. Is the GPU running its stock BIOS? I would reach out to MacSchrauber he may have some info. Did you try both bios switch positions?

[@MacSoundSolutions]

You still always need opencore to boot Monterey

[@clementmartin2289]

Hello thank you for your answer. I've used the latest version on Dortania and I've tried the both positions.@@MacSoundSolutions

[@joelremiel]

Hey Lance, where did the file "EnableGop_1.4.ffs" come from? It is not one of the 3 things you said to download and Macshrauber sent me 2 .bin files: a rebuilt "original" and EnableGop 1.4.

[@MacSoundSolutions]

You just need to install the new file .rom Macshrauber sent you. Not sure about that file as I did this a while ago and would have to refresh my brain on this but it may be the file that gets injected into the original rom, but if Macshauber built you a new EnabkeGop rom you won’t need it.

[@joelremiel]

Oh! I had the Opencore 1.0.0 release, which is the one I wanted to do because of you mentioned Monterey 12.7.5 may work best with Opencore 1.0.0(latest). Does it matter which version of opencore? There was no utility folder that I saw in the newest version of Opencore, nor a EnableGop folder.

[@joelremiel]

@@MacSoundSolutions Oh. Macshrauber sent me two .bin files: the "original" rebuilt, and the EnableGop 1.4.bin

[@joelremiel]

@@MacSoundSolutions Okay, yeah you didn't need a rebuild. I'll attempt this. Thanks.

[@MacSoundSolutions]

@@joelremiel those are in the original opencore package not Martin Lo’s 5,1 you need to download the original opencore package that’s for hackintosh on GitHub link should be in the video description, not Martin’s package to get those utility files but you want to use Martins for the 5,1 Mac Pro the original you only want for those utility files that are included in the package.

[@GuyMontagu-Pollock]

I am in the same boat: still using a 2010 Mac Pro, tuned as far as it will go, because it still does the job well enough; holding off until an M3 Mac Studio becomes available. I wonder how many of these wonderful old tanks are still in front-line use?

[@shiningprince]

Lance, a really important question: is this Boot ROM update in any way related to the firmware update used to make a 4,1 into a 5,1? I assume not since you have a 4,1 that is now a 5,1 and you did it. But cuiorus about the backround or if you can shed more light on it. Thanks,

[@macschrauber1982]

This has nothing to do with a crossflash. Never do inject EnableGop into a original 4.1 firmware starting with mp41xyz. If one has trouble getting the 4.1 firmware upgraded, I can do that the proper way.

[@MacSoundSolutions]

No it’s not related as macschrauber says, you have to get a 4,1 to be a 5,1 first before doing the enable gop update.

[@shiningprince]

Thank you. And just so I understand, is the EnableGOP something that is recommended if you want to. be able to see the graphics in more cases. I have two 5,1 machines (one converted from 2009 4,1 firmware) one has a Vega 64 GPU and the other has a Vega 56 GPU but I don't see these on the supported list. So for my case pehraps the EnableGOP might be irrelevant? Thanks, @@MacSoundSolutions

[@shiningprince]

IF it just makes it a better and more versatile machine for having It, I would like to have it.

[@MacSoundSolutions]

@@shiningprince all it does is give you the Apple bootscreen as if your graphics card was an Apple Card, if you are using opencore you don’t need it really but it’s nice to have if you need to boot in Mojave and do some repair work like booting into recovery mode.

[@donhowell3372]

"One More Thing" for me will be a RX6000 series GPU ... though i still run my perpetual Protools on my Mojove Boot ... i do have a another 6 core classic macpro that I'll setup as Protools only in mojove and use my RX Vega56 in it .. then the 12 core cMP will be Monterey Beast mode for editing video Davinci and FCP

[@LeonPhythian69]

brilliant, thank you man, top notch video ❤

[@Cushmar]

Man great video! This is definitely next on my to do list. I wish they had someone to try the 6600xt. I’d love to replace my rx570 with one- though I guess with the pixlas mod I could go with a 5700xt for a good boost as well.

[@MacSoundSolutions]

6600xt is one of the supported GPUs no pixlas needed just flash with Syncretic’s patcher. Check out my other video on it I show you how to patch the RX 6600 XT.

[@Cushmar]

@@MacSoundSolutions I’ll check out that video next! Thanks for the suggestion!

[@filmxenrique]

Thank you for sharing!! I just came across a 5,1 yesterday and I’m wondering if I can upgrade it to edit 4K videos in Final Cut Pro and if it could game on 144 fps - from your videos it seems doable, I was wondering if you could help me formulate my options for upgrading

[@MacSoundSolutions]

My main monitor runs at 120hz but most games don’t go over 100fps at 4K with my rx6800xt if at high or ultra settings when running Windows. So while you may get 144hz out of your monitor you most likely will not get 144fps at 4K with most games.

[@olesbadio1496]

Many thanks Lance for the incredibly interesting work. I am very interested in your opinion, in order to mount video in 4k on a MacPro 5.1, will the Radeon RX6600XT 8gig video card be noticeably better than the Radeon RX5700XT -8Gig? Could the Radeon RX6800XT be significantly better for this? Thank you again.

[@MacSoundSolutions]

Not a huge difference between a 6600 and 5700xt the 5700xt doesn’t need to be patched to get it to work in the 5,1. If you want to game in 4K then the 6800xt is your best bet but you have to do the pixlas mod and it needs to be patched. I have videos on this. A rx6800 non xt does not need the pixlas mod but does need to be patched.

[@olesbadio1496]

​@@MacSoundSolutionsThank you very much Lance for the meaningful answer.

[@ariethekid]

Not sure if this is unique to my experience but I had an RX580 that I modified to work with boot screen previously. After doing this modification as a test, it no longer boots with that bios. I have to switch to a factory bios for it to work. Not sure why this GOP driver does not play well with the MacVid Bios but just so you guys are aware. Original GPUs seem to work at least a GT120 card I had somewhere.

[@MacSoundSolutions]

So you had a McVidcards 580 and tried to install enablegop to your bootrom? There is no need to do both, but not quite sure what you are saying.

[@ariethekid]

I know I didn't need it, it was for testing and I'm going to upgrade that GPU at some point anyway. My cousin has the same computer but no boot screen with the same card. I replaced my rx580 bios with a MVCard bios that I flashed on another chip with an EZP flash programmer. I assumed it would work either way so I didn't worry too much about it. Then noticed it wouldn't boot. I'm on a rx580 that has a dual bios so I can switch back to the factory bios at any time.@@MacSoundSolutions

[@macschrauber1982]

This is a known behavior. Some MVC GPUs do not work with EnableGop. Also some MVC GPU do also not work with SecureBoot, as modifying the GPU bios will break gop validity.

[@josemedeiros007]

@@macschrauber1982 Thank you for all your work on creating the rom tool.

[@olivierchambrial6042]

Hello Lance, I use a 3.1 Mac pro on El Capitan 11.6. My graphic card is a HD5870 AMD. She work fine but i don't have the bootscreen and I try to find solution for to have this spec. I see your method didn't work with 3.1. But i ask to Joerg Henninges and he answer to try to add the GOP part to the flashrom of the HD5870. What do you think about that ? Have you solution to just allow bootscreen on with this card ? Thanks for your time Olivier

[@MacSoundSolutions]

@@olivierchambrial6042 you could do that but you need to flash it in windows and it’s pretty tricky to do, why not try opencore legacy patcher On a thumb drive to see if it will work to just give you the boot screen.

[@_emjaywlz_]

Another great video, Lance! Thank you for posting this very thorough video! They're the best! Since I'm an OCLP user, any thoughts on this working for us, or is this strictly a MLOC thing? Much thanks! All the best! ~ MJ

[@MacSoundSolutions]

Yes it will work, it loads before Opencore doesn't matter the version of opencore, if you hold down alt key after boot chime, it will give you the stock Apple bootloader. Again this is for GPUs to show the bootscreen that normally don't, if you use Opencore yoou don't need it unless something goes wrong with OCLP or ML then you can boot with a non apple gpu and still get the apple bootscreen so you can select a mojave drive to boot from etc, its a great fall back.

[@_emjaywlz_]

This is of particular interest to me, since having a 6900XT using Syncretic's patcher, I don't get the option for macOS bootloader anymore, and my startup screen goes directly to the OCLP boot loader. Which, thought not the end of the world, does not allow me to choose any other macOS or Win Installs. Thanks Lance@@MacSoundSolutions ! Much appreciated! ~ MJ

[@MacSoundSolutions]

@@_emjaywlz_ Windows should show up in the Open core boot loader but you probably have to reinstall windows first at least when I installed windows on my 6,1 Mac Pro I installed OCLP first then I installed windows 11 in UEFI mode using Rufus. If your windows install is an old boot camp install then most likely “legacy patcher won’t see it but I’m not sure about that and the other thing is when you install “legacy patcher it could’ve erased your Microsoft folder which tells “legacy patcher that you have windows installed. But I’m somewhat new to “legacy patcher and I’m still messing around with windows because I couldn’t get sound out of my 6,1 Mac Pro and I installed the boot camp drivers and that messed up my graphics driver so I have to try it again from scratch but Sonoma is working well with OCLP and the 6,1

[@manfrommars]

Thanks for sharing, I always followed your advice since I got HD7970 a long time ago. Can you specify which OpenCore parameters to protect Windows from writing something to boot ROM? or the Martin Lo's OC already protect it? I have another SSD running Windows, but I don't know if I am on the safe way to run it back and forth. and... Can I say the deep PRAM reset (3 more times) is the way to clear garbage collection or is similar to the reconstruction to make a ROM back in good shape? Thanks in advance.

[@macschrauber1982]

the forced garbage collection will clear more than a normal nvram reset, sometimes the lucky ones get a Microsoft certificate away with it. But it is not like a reconstruction. With a reconstruction you will get a completely empty NVRAM like the machine had before booting the very 1st time at day 1 of its life.

[@MacSoundSolutions]

Martins package protects you so no issue, best to backup your rom and have a look, send it out to Macschrauber to give you a nice clean fresh one if needed. You can move Your Microsoft folder to the windows drive efi, which is a good idea so you don’t delete it by mistake when updating opencore. Also good to backup that folder, it tells opencore that you have a windows install if you delete that folder Opencore won’t see your windows drive to be able to select it in the OC bootpicker

[@manfrommars]

Noted, thanks for promptly reply, I will take a look my boot ROM again.@@macschrauber1982

[@edyantony4809]

Thanks for the video. Cheers

[@ladeluff_]

holhoy mama Lance. GREAT feat

[@khinkey]

Hello Lance! I also followed this to the T, just the Enable Gop process, haven't gotten to OpenCore yet, and my mac still loads with the black screen? The process was successful and enable gop was added to the boot loader. Any ideas? Thanks. Awesome video

[@khinkey]

Never mind, my Saphire RX580 did have a small switch on it. I flipped that over and it worked just fine, though the gray boot screen does appear a little streached. Feel free to remove this comment. Thanks again.

[@hermesserranoaudio]

Not long at all !!!. Instead VERY useful, descriptive and well explained.

[@duggojnr]

Thanks

[@MacSoundSolutions]

Right back at chah! Thanks👍

[@acidtechno]

perfect what a great day

[@alku3540]

Does almost all manufacturers 570-580 graphics cards work? the XFX manufacturer's card does not work for me. Of the Nvidia cards, the Asus 750ti doesn't work, but the GeForce Windforce 970 does, it's the only GBU that works for me. I was thinking, which 570 or 580 should I dare to buy, that would definitely work?

[@MacSoundSolutions]

@@alku3540 a 580 should work xfx have been known to have issues with Macs but I have seen some work. If you bought a used card the bios may have been modified, I had a 580 that only one port worked and I had to flash the original bios to the card and then it was fine. Most brands should work.

[@alku3540]

@@MacSoundSolutions Thanks for the quick reply! I found cheap online Asus Radeon RX570 ROG Strix OC Edition Do you think the card could work with the boot menu? it is difficult to find information on the internet…

[@MacSoundSolutions]

@@alku3540 you will get the boot screen with either opencore, or installing EnableGOP into your boot rom. All the info is in my past videos.

[@nickroberts317]

Lance Greetings from the UK i just wanted to say THANKS because of your videos ive managed to go from 4,1 to 5,1 then to Mojave now to Monterey without a hitch and thats after my first attempt that ended in failure because i watched someone elses KZbin video and ended up bricking my 5,1 and had to buy a new Backplane to get my Mac Pro to live again Just one question well 2 actually lol do u know what this means K600 (with GOP addition in VBIOS) and also my K600 is working with Monterey but only showing 7mb and is very laggy so if u can help that would be great Anyway keep up the good work and Ps has any one told u you look like the late great Jerry Springer

[@MacSoundSolutions]

Telling me I look like Jerry is no way to get an answer out of me :) but alas yes I have heard that as well as Stewart Copeland, I prefer the later. I don't use a Nvidia card, but your issue is there is no driver in Monterey for Nvidia GPUs. Opencore Legacy Patcher might install it for you in their post patches but you have to check if that is one of their listed compatible GPUs and you would have switch from ML to OCLP. I would do some digging around MacRumors forums to find out but that is a really old GPU you would be much better off with at least a AMD RX580. That's about all I can tell you...

[@nickroberts317]

@@MacSoundSolutions Many thanks for the reply Lance if u were to buy a budget Graphics card to work with Monterey what would u go for ??? Reason being i bought a M1 Mac Mini cause i bricked my Pro at the time but now ive got her working again i cant part with her and Ps your right im bad u do look like Stewart Copeland

[@MacSoundSolutions]

@@nickroberts317 rx5700xt is good no power mod needed, works out of the box or rx580 not as powerful and cheaper. RX 6600xt is also good but needs a patch that can only be done in windows, watch my video on it, low power consumption as well no mod needed. The best bit expensive is the rx6800 not XT model, no power mod needed but again needs the patch to work.

[@wall_bracket-]

Hello sir! Thank you for this video. But could you please help me to figure out? A week ago I asked you about mac pro 5.1 and radeon rx6650xt compatibility. I don't use mac os on this computer. I installed windows 10 on separate drive and mac worked with radeon hd 5750 "mac edition" great. After I installed rx 6650xt - mac doesn't boot at all. Gpu is absolutely new and fully operational. Fans are spinning, but no chime sound and no display signal. I'm planning try to flash gpu tommorow. But to be honest with you - I'm little confused and not sure that this will help me. As I understood - people do it because of abillity to see OS selection screen. But I have only windows OS and black screen before system is loaded is OK for me. Should I try to flash EnableGop or maybe GPU flash is better in this situation? Will it help to recognize my new gpu on startup and to hear chime? I'm sorry for this long message, sir. And thank you again for all of your videos! Have a good day.

[@TheAppleLab]

the big nave cards need the syncretic patch. speaking of the 6650, im not sure if this particular card will be compatible... get a 6600/6800 and flash the syncretic patch, after you can flash the mac rom with enableGOP to gain a native bootpicker. see my clips for a how to...

[@wall_bracket-]

@@TheAppleLab Hello! Thank you for you answer. If I'm right understood you, sir - I won't be able to flash this video card. Or may I try to flash my 6650 with 6600's patch?

[@TheAppleLab]

@@wall_bracket- : the big navi cards will only function in the cMP if they are pre-flashed with a patch. otherwise they keep refusing to display anything, regardless of the used operating system. its a known bug of the vbios of the cards and syncretic fix it with a patch. as the 6650 is not an official macOS compatible card, it might be just fine if you boot only windows. dont try to flash the 6650 with an 6600 vbios, it will not work.

[@wall_bracket-]

​@@TheAppleLab Sir, I'm using windows only. And the main problem right now: when i put 6650xt - Mac doesn't boot at all. Fans are spinning, but no "mac start sound". It seems like mac can't initialize gpu at the "BIOS" level and can't finish pre-boot tests...

[@MacSoundSolutions]

You need to patch it as stated by @TheAppleLab with Syncretic’s patcher. This has to be done in a PC it cannot be done in the Mac Pro and it may or may not work with your card but I think I saw someone else get it working with a 6650. Make sure to keep your unmodified vbios so you can revert back, but as stated your better off with a GPU that is known to have the driver in Mac OS like 6600 6800 or 6900. Check my video on how to flash a rx6600xt it walks you through it and works with all three GPUs.

[@thatampguy]

Subbed!

[@nickwynne8211]

THANK YOU FOR POSTING- I did the whole process and still didn't get a boot screen. Just to clarify, does installing EnableGOP in my ROM file allow me to see the apple boot picker with any boot drive OR only with an Open Core EFI header based boot drive? I just rebooted with only the OSMojave SSD in the machine, and again I did not get my boot picker despite EnableGOP being flashed and validated into the ROM file. Thanks!

[@nickwynne8211]

Have also now tried rebooting with a OCLP installer USB plugged in, no boot screen and with a OCLP Sonoma Boot Drive plugged in, and no boot screen. I also have show boot screen checked on the OCLP configurator, and inject AMD GOP on the advanced config page of OCLP configurator. Still nothing. Also did the OCLP config from the host machine itself while booted into my backup Mojave SSD.

[@MacSoundSolutions]

@@nickwynne8211two things what GPU do you have? and does it have its original rom, I had the same issue with a rx580 enableGOP didn’t work when I first installed the 580 even though it worked with my rx5700xt then I reflashed the 580s rom to its original factory rom and then enableGOP worked. Also a Sonnet McFiver or sonnet usb 3 card might block it from working as well.

[@nickwynne8211]

@@MacSoundSolutions I literally woke up this morning and said to myself- what if its the bios mod somehow blocking it? I cant see why that would matter but maybe it does? I am using my strapped and clocked rx580 from old machines. I guess maybe they have to get flashed back to stock for any of this to work right?

[@MacSoundSolutions]

@@nickwynne8211 yes stock Bios, I learned this the hard way as well.

[@nickwynne8211]

@@MacSoundSolutions I got a sapphire 580 dual bios out, flipped the switch back to OEM bios, rebooted, still no boot picker screen. I am at my wits end. Anything else I am missing? Thanks

[@andrewvideouk]

Thank you. Very good. but I am not going to mod my Bootrom but I am going to backup.

[@MacSoundSolutions]

Always a good idea to have it backed up for safe keeping and have Macschraubers tool give you a health report😊

[@binomair9326]

Hi man longtime I did what u do to run 6900xt and its working great then I upgraded the system to Sonoma I waited longtime to use my AMD 6900xt in Mac sonoma today I downgrade to fresh Monterey ...My OCLP 1.5.0 my question do I need to get older Oclp to use my 6900xt ? ok the latest OCLP ?

[@MacSoundSolutions]

6900xt only works with Monterey unfortunately 😢

[@binomair9326]

@@MacSoundSolutions Yes I know that why I downgrade to Monterey from Sonoma, my question do I need old OCLP or ok 1.5.0 ? to make 6900xt ruling again in my Mac ?

[@MacSoundSolutions]

@@binomair9326 sorry I was out and about didn’t read your whole post. I think 1.5 should be good to go

[@CABEZAS50]

Thanks for the video but I have 2 questions how you install the drivers for new graphic card and can I install latest OS ??? Thanks again for the video

[@MacSoundSolutions]

Drivers are in Mac OS you can’t install drivers, OCLP patches drivers of old GPU to work with modern OS. But only specific GPUs work. This video is to patch the boot rom or the GPU to get the native Apple boot screen. You can only install Sonoma if you install Opencore Legacy Patcher first. And you must have a supported GPU.

[@CABEZAS50]

Thanks for reply me I have a NVIDIA GeForce 3060 and my friend gave me a like brand new macpro 5.1 and I would like to make a powerful mac

[@MacSoundSolutions]

Check the Opencore Legacy Patcher git hub site to see if your graphics card will work, they have a list of supported GPUs

[@MacSoundSolutions]

The 3060 is too new and most likely would need the pixlas mod and only work in Windows not Mac OS

[@josemedeiros007]

@@MacSoundSolutions Lance is correct, there are no Nvidia web drivers for video cards newer then the Nvidia GTX 1080 for Mac OS X, the last version you can install the web drivers on are OS X High Sierra, however if you use a Kepler Based Nvidia GPU such as a GTX 640, 680, 770 or 780 you will have native Kernel kexts up to OS X Big Sur, if you use OCLP and root patch they will also work in OS X Monterey - Sonoma.

[@aaronhinton92]

Do I need to use open core at all in order to enable gop? Can I just use Apple’s stock boot loader and not use open core at all? I’m a little confused.

[@MacSoundSolutions]

You don’t need opencore to install and use enable_GOP but if you want to use an OS passed Mojave you need to opencore.

[@massimodemajo]

Brilliant! thank you so much!

[@howlcoproductionhdfi]

I did it flashed the GOP … I little scary but went off no issues

[@MacSoundSolutions]

Congrats.

[@theredrabbit6836]

Do have to use Martin Lo OC or does this work with OCLP ? i’m a little new to this and bought a 4,1/5,1 MP for "fun" and need a little help to understand it all

[@macschrauber1982]

Neither, it is independent from OpenCore unless you need OC for running newer OS than your Mac officially supports.

[@theredrabbit6836]

@@macschrauber1982 thank you very much

[@Tigerex966]

Awesome. I wish there was an adapter to use newer xeons or a way to overclock the GPU slightly either in software or on the chip. Itself.

[@linguica33]

Hi Lance, I have done the whole process already in firmware mode. Should I go ahead and flash firmware or I should reboot again in firmware mode? Thanks

[@MacSoundSolutions]

You can flash if you are in firmware mode

[@linguica33]

@@MacSoundSolutions did it, and it was successful. Thanks for such clear explanation of the steps to enable GOP. Happy days with rx580.

[@linguica33]

I hope I can get one piece of advise from you. As I am not in OC yet I had to disable SIP to enable GOP. Should I leave it like this or I should enable it? Thanks again, and sorry for asking this here.

[@macschrauber1982]

SIP has nothing to do with loading a Gop driver in firmware. You can set it back on. It was just needed to load the helper kext for Flashrom. OCLP sets sip off for kexts as they need it for their modified kexts. Thats the difference between using the Dumper with native or with OCLP driven OS.

[@carlotantari4584]

asking this question will probably just demonstrate how little I do understand BUT would ENABLE GOP remove a Firmware Lock as a side benefit ?...asking in frustration as I have 1 2012 5,1 that is locked.

[@MacSoundSolutions]

No because you have to your firmware to create the EnableGOP version. Not sure what firmware lock is on a 5,1 please give me more info. I guess you are not able to make a copy of your firmware if you are locked so you’re stuck, if you can you could send it out for repair.

[@fleonard4]

Also, my 3rd Mac Pro is my gaming PC, and I boot to Win 11 Pro. It still has a Monterey HDD, so I think I can boot to that and try this, but I'm hoping I won't gave to pull my NVME that has Win11 on it. Any thoughts if this is safe, and will work? I know you mentioned pulling a Windows HDD, but since it's on NVME, it's a little more complicated. I don't want to pull it, and then not be able to get it booting again.

[@macschrauber1982]

If you boot a Windows NVMe (hence its a NVMe it has to be UEFI) unprotected you will get your bootrom signed with a certificate. This will harm it in the long run. So the advice to remove it. Other option: Check bootorder in the Dumper log. OpenCore needs to be at first position. IF you reset the nvram and the ESP of the NVMe is the first the firmware finds it will start it and sign the bootrom. That's the concern, and that's why its safe to remove it. And just onther hint: remove or rename the boot.efi file of Window's ESP. OpenCore starts it anyway - and unless it's not replaced by an Windows update or repair action Uefi Windows will not boot without OpenCore. That's the goal to keep the bootrom healthy.

[@fleonard4]

@@macschrauber1982 zero MS certs, but my Windows 11 cMP has the least free space. "29822 bytes free space of 65464". Does a NVRAM clear 4 times wipe out the GOP? Should I have my flash ROMs cleaned? My other 2 cMPs had a bit more free space than this one. None of them had any MS certs. OpenCore seems to be doing its job. I can send you my files if you want to take a look.

[@shiningprince]

quick question for you: I backed up the rom and it showed about 27000 bytes of empty space. Then just to see the MTC counter in action, I did a PRAM reset and this did indeed reset the MTC couinter, but it also reduced the free space to like 4337 bytes. there are still no errors but a few of the items now say "caution" instead of "OK". If I am going to now inject using the dosdude tool, should I use the most recently rom back up with less space or revert to the earlier one with more space or does it matter? Thanks

[@MacSoundSolutions]

I would go with the most recent every reboot changes the numbers and it will purge itself when it gets full. Always a good idea to have MacSchrauber have a look at your rom before flashing, I am not a rom expert at all and if it’s a 2009 4,1 -5,1 Mac Pro they are more prone to rom issues.

[@shiningprince]

@@MacSoundSolutions Thank you. I took your advice and had MacSchrauber look at it and he did a rebuild as well. Mine is a 2010 genuine 5,1. Many thanks!

[@ChristopheSmith]

If I understand correctly one does not need open core to install this ?

[@MacSoundSolutions]

Correct, if you have Mojave you don’t need opencore to get a bootscreen. A 5,1 Apple supported OS will get the bootscreen with a GPU from the list of supported GPUs but many newer GPUs need opencore to work like a rx6800xt needs Monterey and opencore etc.

[@ChristopheSmith]

Thank you very much for the information. I actually successfully flashed the firmware before having read your answer. It took me quite a while. That is because I am not computer versed. I do not yet have Open Core. One note worth mentioning I had to disable SIP . I guess that is normal. Have a great day 🙏

[@MacSoundSolutions]

@@ChristopheSmith good point, you need to disable SIP to install Martin Lo's opencore package.

[@ChristopheSmith]

You also need to disable SIP to EnableGop without opencore 😉.@@MacSoundSolutions

[@chapkaeditions]

Hi Could you give me the link to the list gpu test with enable gop at 2:23

[@jimsmart2522]

Great video, thanks

[@Bloodklot]

I really wanted to enable GOP on my 5,1 Mac Pro but two things. I didn’t see my graphics card on your supported list. I have a RX 6600 XT. I also ran Macshraubers app, and I had a Microsoft certificate pop up and it said Not Ok. Everything else popped up ok. I’m not sure if this was because I had ran boot camp and Parallels on this computer a long time ago? But I’m too scared to brick this. I can to this video from your Opencore Monterrey fresh install video.

[@MacSoundSolutions]

I would have MacSchrauber do a rebuild to be safe.

[@raulgarciauniversal]

Hi Lance, how can I disable SIP if I can´t enter in safe mode ?? (When i turn on the mac by pressing command + r , i only see a black screen) . I am probably missing some details, I would appreciate your help. THANKSSS 🙏 ( GPU RX 560)

[@MacSoundSolutions]

@@raulgarciauniversal you need to put the old gpu with boot screen, or install enable gop but again need boot screen to install it, but if you use OCLP instead of Martin Lo it turns sip off for you without booting in into recovery mode. So that might be your best bet if you don’t have an old Apple gpu. They also have instructions on how to install OCLP with a non Mac efi GPU like you have. Look at note “For Mac Pros an Xserve” a little down the page dortania.github.io/OpenCore-Legacy-Patcher/BOOT.html

[@raulgarciauniversal]

@@MacSoundSolutions Thank you very much Lance you saved my life🙃 , I had forgotten my old card in a drawer and it worked.

[@AndresValdez54235]

Hi Lance, it's me again. Can you make a video on how to enable GOP with OCLP????? I noticed your first download is "OpenCore," but in my system, I have OCLP, I understand you were using MartinLO's OpenCore... In my machine I have Sonoma

[@MacSoundSolutions]

It should be the same routine, you need to get EnableGOP from the original Opencore package link in the descirption which is for Hackentosh or maybe cant remember if it's in martins package, but you just want to get the files, you don't have to change OCLP.

[@AndresValdez54235]

@@MacSoundSolutions Got It I'll download it then... Thanks a lot

[@AndresValdez54235]

Lance what do you mean by “bless opencore”???

[@AndresValdez54235]

I flash my machine with Rom dump app,everything is fine. I reboot the machine after the flashing… and the chime is still sounding but no screen or anything to see… I don’t think is broken but that is normal? I’m starting to panic…

[@MacSoundSolutions]

@@AndresValdez54235 what OS are you using? Do you have installed?

[@jornzolondek8819]

what a pitty ! in your list, the AMD RX6600xt is not listed or ist ist an error ? Because I need my pic bus, I will only change my rx580 with the same size to a rx6600xt. And I thought, because of this Gop. I wouldn't need any further flashing and therefore a PC. Am I wrong or is it only the case with this one card variant that you also have to flash the card in a PC beforehand? My rx580 runs with Martin lo. Package 0.98. and I can already see a boot screen.

[@MacSoundSolutions]

Yes you need to flash the rx6600 via a pc using Syncretic’s patcher tool. It has nothing to do with enableGOP. Once flashed you can use it with Monterey and opencore. You will not be able to use it in Ventura or later.

[@jornzolondek8819]

@@MacSoundSolutions on thank you for the rapid answer. unfortunately is the 6800xt to expensive to invest in my old cheesgreater ;-)

[@MacSoundSolutions]

@@jornzolondek8819 6600xt are cheaper

[@lMansonR]

Thank you!

[@tttt-gk6dq]

Hi, Lance! I have MacPro 5.1, installed PCIe to M2 NVMe, and tried to install Windows 11 there, but no one chance… I made USB flash with Windows through Rufus, installation started, I formatted disks, and after rebooting it shows me blue screen, that windows can’t be loaded because it can’t find winload.efi. I’m trying to get an answer almost 6 months, installed it on SSD through SATA but my speed is only 270mb, and for some reason reading and recording tests for my M2 through PCIe is only 800-900mb.. I’m so sorry for my English. Hope someone will help me here. Thank you in advance 🙏

[@MacSoundSolutions]

You need to be booting into the opencore boot loader if not you could be just booting into windows which is not good. Are you using opencore? Getting 270MBs is normal for the sata2 bus. Your NVMe is slow it should get around 1400MBs depending on the brand.

[@tttt-gk6dq]

I installed something some time ago, but I’m not sure. I have only windows installed on sata ssd, I don’t have macOS anywhere. And I don’t see boot loading, only when I turned on my Mac, I see after 15-20 sec black screen, then it’s propose me to chose the system (but there only windows) and then loading.. that’s all(

[@softhanboltd.4180]

@@tttt-gk6dq It seems to me, you've got to start from the beginning. 1st getting the OSX Mojave or earlier version on your Mac ssd/hdd(on one of your 4 bays)(for example making the bootable USB with Mojave or earlier; or from the DVD; or ) and then you can proceed with OCLP and then Windows. (this is what seems to me - please read more about your first needs - I might not have full picture of your situation). (Apologies to Lance if this is littering. I just wished to help.)

[@AlexanderDiFiore]

I followed your instructions exactly as it is explained but now I cannot get the boot loader to appear. I’m afraid that I bricked my Mac Pro 4,1->5,1. What do you suggest I do?

[@MacSoundSolutions]

What bootloader? Opencore or just regular mac boot loader booting into mojave. Did you try holding option on boot?

[@AlexanderDiFiore]

@@MacSoundSolutions Now I can get a native radeon card to work but not my Nvidia card. I have OpenCore booting Sequoia.

[@MacSoundSolutions]

@@AlexanderDiFiore you gotta check core Legacy patchers website to see if your card is supported in Sequoia. It might not be. You also have to reinstall post patches if you’re switching from one video card to another.

[@computerenthusiast402]

I have a Original Mac Pro 4,1 with a RX580 Nitro Pulse installed. NO Boot screen running OSX High Sierra. What should I do with this computer ?…….I want to use it as a File Server and Desktop workstation for Video editing, Music editing, Office production apps , and Surfing the internet.

[@MacSoundSolutions]

Install Opencore or OCLP and upgrade to Monterey or even Sonoma with OCLP.

[@computerenthusiast402]

@@MacSoundSolutions I am using a NON-Mac RX580. Which way should I go. I don’t have a boot screen but I want one.

[@macschrauber1982]

If your RX580 has a valid GOP in its firmware (should have if not modded) then you will get one with EnableGop in the Mac firmware. If disabling SIP is the issue you can boot into Recovery: hold cmd-r during startup chime, give it 5 minutes to boot into Recovery, select Terminal in the Tools section of the menu bar and enter [csrutil disable]. After next reboot SIP is disabled and you can dump and flash the firmware.