And absolutely don’t revert this. An MFM HDD in a 512? Such a unique (and again, era correct) upgrade. That controller card should be studied. Imagine being able to reverse engineer it with modern components and then an SD or CF card? Sweet!
@macpb28925 жыл бұрын
it's the hyperdrive upgrade, it was very commun on 128kb and 512kb mac at this time. Today they are very rare because all drive dies long ago.
@brianv28715 жыл бұрын
Yeah, sadly being MFM kinda rules out the SD/CF "cheap" upgrade path. I'm not sure there is enough demand to put a hard drive in these older systems, and while you could do the MFM hyperdrive option, like Mac PB says, most of those drives are long since dead so you'd need a modern MFM solution but with the demand being so low the prices on those devices are between $200-300. At those prices, most people would just use a Floppy EMU.
@macpb28925 жыл бұрын
@@brianv2871 for modern collector there is no need to upgrade Mac 512kb... it's better to have original upgrade for history or the original machine but not a modern upgrade. Mac 128 and 512 are not so usable since the memory is to small, they are really for collection and demo. The Mac Plus is a better option if you want to have powerfull upgrade, it support 4mb of ram and the SCSI + system 6 allow you to have more fun.
@mrlurchAU5 жыл бұрын
Brian Veditz and given how much software a) can run on 512k, and b) you’d actually want to; a FDD emulator emulating a HD20 would probably do just fine.
@brianv28715 жыл бұрын
@@mrlurchAU Yeah, definitely. When I was fixing my Mac 512k and Mac + a few months back, Adrian brought me a regular boot disk and a paint boot disk and once I got it all working, I booted up to that and played with it for few seconds until I declared 'Okay, I'm bored now'. :) Unlike most other vintage systems, you can't really make disks for it from a PC and I don't have any 'tweener' macs, so really the Floppy EMU is the only realistic way of using software on these machines... Plus, those Mac floppy drives are almost as flaky as an IBM M2 keyboard, that even when you do get it working, it'll likely die again a few weeks later. :)
@classiccomputers62115 жыл бұрын
Woah, you have one of these too? Cool! This is called the "HyperDrive" mod (as the controller PCB declares), sold by General Computer Corporation back in the day for around $2800 (almost as much as the Mac itself!). I believe they sold 5, 10, and 20 MB configurations; like yours, mine has the 20 MB drive installed, and a friend of mine has a 10 MB system which I covered in a video about his Apple collection. Interesting that yours doesn't have any stickers on it, mine has a "HyperDrive" logo on the front near the Apple logo and a warranty sticker on the back right next to the original Macintosh sticker. They're quite the bear to disassemble, as you found - I also had to bend the chassis to remove the logic board, and the hard drive isn't very easy to take out either. I'm still working on getting mine running properly - the original drive was stone dead, and even after freeing the platter/stepper motor it wouldn't seek correctly. After a bit of investigative work, though, I found out that mine uses the same MiniScribe drive as used in the original Mac SE except with an MFM controller board - after a PCB swap, I got a working drive! Unfortunately, it only occasionally spins up when connected to the HyperDrive supply, so I assume some capacitors are reaching the end of their lives. I'll definitely let you know if it works after the recap and might even make a video on it or something like that. The strange booting issue you show makes me think the power supply's got some weak caps and isn't providing enough power to the Mac as the hard drive is drawing so much as it spins up. I'm going to go the "capacitor" route, but I could get you a more firm answer when I dive into resurrecting mine. :)
@nickwallette62015 жыл бұрын
Never a bad idea to recap, but I think Adrian's right about power sequencing. That switching supply probably has a power-good delay. The drive didn't start spinning up until the Mac was already running.
@Ale.K75 жыл бұрын
Please, don't revert it! Make it work with the hard drive. These old mods are super cool!
@jazzius4 жыл бұрын
I would agree, but what I think he should of done is to remove the old mfm drive PSU, fan, etc, and to replace the MFM drive PSU with a new and smaller one.
@Plingowo10 ай бұрын
yesh
@laurensnieuwland46575 жыл бұрын
Definitively make it a supermac! Don't revert it back!
@shankthebat86545 жыл бұрын
Upgrade this bad boy as much as you can! It's already been heavily modded, why stop now!
@StarkRG5 жыл бұрын
Yeah, I'm with the leave it as it is crowd. It's not an awful mod, though it might be nice to figure out a better way to mount the logic board.
@tarstarkusz5 жыл бұрын
@StarkRG It's very neat and professionally done. I did this kind of stuff back in the day and I say keep it like it is.
@michaelsworkshop90315 жыл бұрын
Wikipedia says that Hyperdrive hard disk cost $2795 US$ at the time (roughly $6500 in today's dollars!!!). Please back up those Hyperdrive volumes and all their contents -- if you have a BMOW Floppy Emu, you can connect it to the floppy port, and it will emulate an Apple HD20 hard disk over the Mac's floppy port -- that's the easiest way I can think of to back up 20MB off of this machine. Worth getting one if you don't have one yet -- awesome device. Please keep this machine as-is also -- this upgrade is awesome. Love to see what is on those drives - this is like a time capsule! Best wishes.
@NaoPb5 жыл бұрын
Yes, and maybe upload that hyperdrive testing utilities to internet archive or something, if it's not online already.
@valdisblack15415 жыл бұрын
$6.5K for an HDD --- OMFG who was the owner of this MAC???
@tarstarkusz5 жыл бұрын
NO! This machine should be back the way it was with this upgrade. It is a very neat job, the hard disk has lasted 35 years, it'll be fine.
@valdisblack15415 жыл бұрын
@@adriansdigitalbasement this is fabulous
@tarstarkusz5 жыл бұрын
+Electronics... What is so important about the hard disk data? I'm sure he is going to back it up, but really, what is the point? I seriously doubt there is one of a kind software on the machine that needs to be archived.
@handsolo12095 жыл бұрын
The mods are really old too, so it would seem silly to make it just another stock machine rather than keep it with period mods.
@RossTheGenMan5 жыл бұрын
I think you should re-assemble it and try to make it work as it was (with HD). These sorts of mods and changes are part of the history of the computer and should be left unless they can't be made to function. Part of the intresting history of older computers is seeing how people modded them and upgraded them. You might be able to add a second switch or a switch with a few positions to allow the small power supply to power up before the main board. IE you flip the switch to a first position.. wait a few seconds.. then flip it all the way up.
@JohnGotts5 жыл бұрын
MFM/RLL drives last forever, but I would still make a backup.
@sugaryhull96885 жыл бұрын
Agreed. He should make a DD image of the drive
@ZXRulezzz5 жыл бұрын
@@sugaryhull9688 Does dd for m68k Macintosh exist? Because I don't know any simple way to attach MFM drive to modern PC. Maybe older PC and ISA controller card would do, but it has to have same hardware and formatting, otherwise it won't work.
@laharl2k5 жыл бұрын
ZXRulezzz There are a few linux distros that can boot with as little as 12mb of ram with a gui, im sure it could boot to console with only 1mb so any 386/486 machine should work for this task. The problem would be how to get the data out, maybe serial port over to another machine? Not sure if newer machines with isa ports would recognice such older hardware.
@jussapitka60415 жыл бұрын
@@laharl2k Would an AT or XT be able to run somethig like that? They could recognise the drive and use an XTIDE to get the files to a modern computer.
@Alexis_du_605 жыл бұрын
Agreed, they just don't like sitting unpowered for long...
@RetroBerner5 жыл бұрын
Don't make it stock, please. Somebody put a lot of effort into that back in the day
@FennecTECH3 жыл бұрын
You should take it further. Try to get more ram. A faster CPU. Make this fucker as crazy as you can!
@cll1out5 жыл бұрын
I used to own a 512k we bought at a yard sale in the early 2000’s. I used it off and on up until I moved out of my parents house. It didn’t have any sort of hard drive with it just an external disk drive. I knew hard drive options existed but I only thought external options were available. My heart melted to see this machine boot off an internal hard drive that looked like it may have been installed as an extra option for a customer when sold new. I’d say definitely keep it this way and put it back together. This is a rare find and seeing this really made my day, thank you!
@VintageTechFan5 жыл бұрын
That fan is exactly what you suspect. It's a brushless motor using an external controller. I have seen them in old Rohde&Schwarz test equipment. To your question: Leave it in, but make it a little less crappy in execution. The mounting bracket for the HDD and everything is fine, but the mains wiring is .. crazy.
@rayburke43864 жыл бұрын
Hi Adrian, I am a fellow Oregonian. The old power supply that doesn't start up is usually the Electrolylic capacitors that are dried up, replacing them usually fixes the power up problem. Sometimes there is a power good line that needs to be enabled to start up the supply. Their are many Tech channels that are showing how to fix these power supplies, IE Paul Carlson , (Mr Carlsons Lab), 12voltvids, w2aew, Jim Lindenas, and others. Good luck from Ray Burke
@3lectr1c5 жыл бұрын
Keep the hard drive. That is so cool that it still works! My Compaq Deskpro 286’s hard drive is long dead... A retro mod like that is so cool. Definitely keep it! Update: Thanks for 20 Likes!
@notfirefox5995 жыл бұрын
12:10 I love the sound that hard drive makes as it starts up. It should be the startup sound to a computer
@Vein19865 жыл бұрын
Keep it as-is, as you mentioned, those are "era correct" mods :)
@mrbill23805 жыл бұрын
THANK YOU! You saved my Applied Engineering Vulcan 40MB MFM Western Digital drive! I have one of these in my original owner Apple //e and when I brought it out of 30 year storage the drive would not spin up. I bought exactly the lubricant that you showed/mentioned and to my delight the drive spun up after putting it on an external power supply. Amazing!
@JapanPop5 жыл бұрын
Yup. We called it “sticktion” in our lab back in 1994. We had so many MFMs we needed to repair, and used the same method to lubricate bearings with some graphite grease.
@Alexis_du_605 жыл бұрын
Ah yes the stiction problem, give [the stuck hdd] a good ol' whack and it should free up!
@osgeld5 жыл бұрын
hyperdrive were one of the few companies back in the day providing this this upgrade with the blessing of apple keeping the warranty intact, keep it
@io44395 жыл бұрын
forums.macrumors.com/threads/mac-512k-w-internal-hyperdrive-rare-valuable.422001/ Quote by MacSimum Upon installing the Hyperdrive, when your system is first turned on, you are severly undervolting, which in most cases causes the display to go crazy, if it comes on at all, and you will most likely get a Sad Mac error relating to the analog board. To make the proper adjustment, you will need a multimeter, antistatic plastic flathead screwdriver, and a Mac Diagnostic cable. If you don't have the diagnostic cable, you can make a dongle that will work as well, but you will have to be extremely careful to avoid shorting out your logic board. If that happens, you're done. You've fried your logic board and the HyperDrive circuirty.
@mrlurchAU5 жыл бұрын
Original 512 had the 400k drive. But the 512kE and 512kED had the upgraded 128k ROM and could then take an 800k drive. I *believe* upgrading the rom on a standard 512 can be done. But if this has a HDD in it, it could be a custom rom? Might be worth backing up if that’s the case.
@thecaptain22815 жыл бұрын
@Adrian Black The Mac 512k was originally available with both types of floppy drives. The higher capacity drive was an optional upgrade. About the HDD, like the Mac128, that is an authentic upgrade. Keep it! It's a very cool aspect of that computer! The first boot corruption problem is actually the way those upgrades worked BITD. The early upgrades required the reset be pressed manually because the HDD needed time to spin up. Not all of the HDD upgrades did that. Later versions paused the system boot long enough to account for the spin up time. This quirk is actually authentic as well. Do your thing fixing it up, but keep it as is. It'll be a wonderful show-case and conversation piece!
@draggonhedd5 жыл бұрын
That drive setup is cool as hell! I love period aftermarket mods like this. Keep it together! Also look into doing the caps on the analog board, it may be a little slow to warm up with old caps.
@TheDefpom5 жыл бұрын
Leave it a the way it is, adding upgrades to these machines in that era was common due to the speed of development. My dad had a Macintosh II back in about 1989, it came originally with a 40MB HD and 4MB of RAM, that was increased to 8MB of RAM later. In about 1991 the logic board was swapped out for the IIx version, and had dual 1.44MB floppy drives added, as well as upping the RAM to 16MB, it had a special graphics card fitted for the monitor which was a 21" if I remember rightly. Also had the apple scanner and laser writer II printer. it was used for desktop publishing at the time, it was quite an investment ! I sold that machine for just NZ$50 about 15 years ago, and it was still working! I still have the full set of System 7.0 / 7.1 in its original box that was used with that machine,
@xPLAYnOfficial5 жыл бұрын
That mac has such a unique story and amazing one-off add-ons. Definitely keep it and see if maybe you could even take it a step farther if you're feeling brave. Maybe even give the case a different look, style or color to match the craziness inside.
@jamesweiner5 жыл бұрын
Only just discovered your channel and I am loving your old Macintosh discoveries! Reminds me when I have discovered accelerator cards hiding in modest Macintosh SEs before :-)
@fred_derf2 жыл бұрын
I had a Mac 512K, with a _2 MB RAM and SCSI port_ upgrade. Thanks for the memories.
@elfenmagix81735 жыл бұрын
Leave it as is, though you should get another PSU for the hard drive. The upgrade is period correct. 512K Macs came with 800K drives, and you need to check the ROMs to see if it is HFS (Hierarchical File System) or MFS (Macintosh File System). Since it is using a rare System 5, it looks to me to be HFS. HyperDrive used to make external SCSI Drives for the Plus and SE / SE\30s and even had an internal SCSI HD for the Mac Plus long ago as well as rebanding internal SCSI drives for the SE / SE\30 and Mac II Line. Look at the side of the board, there should be steps on one side so you can pull the board out a tiny bit for the steps to line up and then open it like a swinging door. You should close it the same way. If anything, check out the Analog Board and clean up/replace any bad solder you find and check the connectors for burn marks.
@MrStillions2 жыл бұрын
I just gasped at 14:29 because you just said you weren't gonna touch the supply and then it cut to you holding it. Took a sec to realize it was unplugged. lol
@DaveIsbell5 жыл бұрын
Another amazing video. Thanks Adrian!
@denhouse15 жыл бұрын
The old Mac lover in me says “revert it back” but I like the way you tinker (improve) things so I say keep as you got it! New subscriber and I love your vids!
@bruwin5 жыл бұрын
Yeah, but think of it this way. It's not terribly difficult to find stock 512Ks even though they are getting on in years. But finding ones modded back in the day, with those mods still working? It's kinda nice to preserve that history as well.
@MrKrimstah5 жыл бұрын
Keep the hard drive ! You keep finding all the unique macs
@trainingtheworld50935 жыл бұрын
Wow what a find! Twice I have tried buy Mac 512k's and have always had issues with dodgy sellers...and here you have two of them! What a surprise to see this HDD setup! I am guessing that this was a very very early modification to address the lack of an internal HDD in the Mac 512k. You did a great job getting it apart and changing the power supply. I would just leave it the way it is currently and just enjoy it whilst the MFM HDD is still functional.After that fails then put it back to stock.
@tarstarkusz5 жыл бұрын
You should absolutely put that back the way it was! It is time period correct and it's a very neat job and it makes the machine so much more useful.
@bundesautobahn75 жыл бұрын
Keep it as-is! Even though an MFM drive on a platform that was historically known to use SCSI for a very long time seems weird, I'd still keep it as-is. Consider it like the Mac equivalent to the IBM 5160 XT.
@Fifury1615 жыл бұрын
You are thinking of the Mac Plus - earlier all-in-ones didn't have SCSI. There was an unofficial weird external hard drive that plugged into the external floppy port though...
@THEtechknight5 жыл бұрын
Except it wasnt unofficial. it was called the Apple HD20. But you needed the enhanced ROMs to natively boot it. Otherwise you had to have a boot disk to load the driver before it transferred control over to the hard drive.
@timmooney75285 жыл бұрын
Keep it as is. The curiosity factor with the MFM drive makes it more interesting. If this was a commonly known drop-in feature, I'd think differently.
@marc63405 жыл бұрын
This was such a fascinating video! I have a pretty large collection of macs and I always find it amazing when there is something in there that is out of the ordinary. Image, a hard drive in a classic mac? SO cool. If I were you, I would put it back together (after you fix that power supply glitch) and run it with the hard drive. It would seem somebody put an awful lot of work into it. I'm thinking it's a rare animal! GREAT video!
@josephnealeUKscratchcards5 жыл бұрын
Keep the hard drive in this mac and great video as always
@AlexElectronics5 жыл бұрын
Definitely leave it as it is. That MFM drive in a Mac is really cool!
@tylrhoot5 жыл бұрын
Keep it and back up the old HDD
@Runicen5 жыл бұрын
Definitely keep it as-is! Watching you take this beast apart was an adventure unto itself.
@ringbling4205 жыл бұрын
You are stumbling upon some fun computer adventures and it makes me jelly but at the same time I am learning more about old systems and I love it 😊
@aitchpea60115 жыл бұрын
Stiction is definitely a commonly used term within the industry. I don't know if it was official, but it was certainly taught in the training sessions for those building hard drives at IBM.
@ShiggitayMediaProductions5 жыл бұрын
Keep it as is! It's so rare to see late 1980s Macs running off of an HDD... in an era when it was mainly floppy boot.
@AaronHuslage5 жыл бұрын
The craziness is what makes it! Amazing find. Keep this the way it is
@charlc5 жыл бұрын
Wow, Adrian, this was so cool to see! I couldn't believe it when it came to life!
@RacerX-5 жыл бұрын
Wow, what a find. That has to be a pretty rare mod. I would for sure keep it as these mods back then where pretty unique.
@countersurprise5 жыл бұрын
Hi Adrian, Once again an extremely well-made video which I found quite enjoyable. I really like your restoration projects on eighties and nineties hardware so keep it coming! As for your question, call me crazy but again I'd like to vote for "keep it". Why? Because I (again) think the upgrade is time-appropriate. MFM harddrives are ancient and this one not only works but boots too! That's special in and of itself; I've worked on numerous IBM PC XTs and if they have an MFM harddrive, most of the time, the thing is broken! That's it for my 5 cents, keep up the good work & thanks again for your videos! -Daan
@OuTannu5 жыл бұрын
keep as is... dont know if there a mod to replace the old harddrive with something like a sdcard of CF or something in case of the drive failing
@GGigabiteM5 жыл бұрын
There are IDE and SCSI to SD/CF card adapters that are relatively cheap. For MFM/RLL though, the price shoots up substantially. I found one such board with a quick google search, but it's $270 www.drem.info/ Though for all of the functionality it offers, I'd say its well worth the cost.
@bzuidgeest5 жыл бұрын
Besides the board GGigabiteM refered to there is also www.pdp8online.com/mfm/. Similar functionality. And I doubt much cheaper if you include the beaglebone.
@BlackEpyon5 жыл бұрын
I don't see any point in making a interface to mate an SD or CF card with an MFM/RLL controller. Skip the MFM/RLL controller and interface to the bus directly.
@GGigabiteM5 жыл бұрын
@@BlackEpyon Considering the massive number of different machines that used MFM/RLL, that makes the least amount of sense. You'd have to make dozens of different interfaces for every machine and write the software for all of them. Easier and less expensive to make an MFM/RLL emulator and work out the slight controller differences in software.
@BlackEpyon5 жыл бұрын
@@GGigabiteM Firmware, not software. Software doesn't need to know what kind of data storage it's using, only what address it can be found at. But the interface is less of an issue than the underlying system architecture. Mac architecture of that era was considerably different from PC architecture, as Mac and PC were from Commodore, where towards Commodore's end they were indistinguishable from PC, and Apple these days practically IS PC with a more expensive wrapper. As long as the architecture is similar, all you need is an adapter to change the interface.
@jjjacer5 жыл бұрын
Keep it as it is, a rare example of what was available, also see if you can image/backup that drive, never know when you find an old piece of software that disks/downloads dont exist anymore
@woodengamer5 жыл бұрын
gotta keep it the way it is, this is screeming old school mod and those are always fun to find. If anything I would say keep working on the power supply to get it (or another one) that can provide voltage fast enough to have it boot properly without a reset. Super fun video and great find.
@fluffycritter5 жыл бұрын
Hearing that MFM drive spin up brought back so many memories.
@faumnamara51815 жыл бұрын
I seen one of these in a school recently, it had similar issues starting up, they were going to bin it - might pop along Monday and see if its wanting a new home. I think keep yours as is, and also backup the data for historic value.
@joshonthetube5 жыл бұрын
That is very cool! Back it up, and keep it how it is. You might want to take a hint from the previous owner and add a fan though.. I think there were third party add-on ones that mounted on the outside of the case somewhere for some of the early macs, but maybe that was more SE era.. i don't recall for sure.
@datashed5 жыл бұрын
This is an awesome demonstration of the kinds of ingenuity and out-of-the-box thinking hardware engineers gave us back in the day! I'd say get it back together with the MFM drive intact, and bonus if you can get the original PSU working. I also echo what others have said about capturing the data off the drive so that the drivers and whatnot can be preserved for posterity (and anyone else who might run across a machine with this upgrade)
@ramonrichie96833 жыл бұрын
So many of us put extra ram, hard drives changed the 400k floppy to 800k ones... and FileMaker, amazing how that database is still around and lively! (I program with it every single day...) As a student I used to upgrade others Mac to 2 or 4 meg of RAM. Then some apps you'd load in a ram disk, making the machine pretty fast.
@colin_58395 жыл бұрын
Leave this thing the way it is! Its really cool and it tells a cool story!
@televisionandcheese5 жыл бұрын
This is just too cool to be put back to stock!! Plus it'd be lots of fun getting it all working smoothly , powering stuff on time and such ! :)
@SootHead5 жыл бұрын
"My Pappy said son you're gonna drive me to drinkin' if you don't stop drivin' that hotrod.... Macintosh." Once again, a vintage hotrod is cool... even if it's a bit inelegant and not ready for "Mac-o-Rama." It still hauls ass in a retro kinda way.
@15743_Hertz5 жыл бұрын
General Computer Corporation made a US$2,795 Hyperdrive hard drive for the Mac, they also made a 2 meg upgrade. You have a period correct computer for the more wealthier of users.
@GuybrushThriftweed5 жыл бұрын
Keep it as it is! Got to love these old school mods.
@CapnKetchup2 жыл бұрын
Those old MFM drives can be sticklers when booting up, sucking a lot of power. Maybe that's why it works when you hit RESET but not on power-on? (Lack of enough power to the board due to drive pulling too much, or just the drive itself hasn't booted to where the Mac can read it.)
@Eyetrauma3 жыл бұрын
12:36 Love the harmonizing
@Microang5 жыл бұрын
Keep the crazy, it's awesome! These period mods are amazing, before things just fit together like little legos.
@alexviralata13565 жыл бұрын
Dude, Keep the drive on that mac! That mac is awesome!
@GameTechRefuge5 жыл бұрын
Sweet T-Shirt Adrian! Gave this a thumbs up 3 seconds in, just because of the T-shirt. I'm sure the project is cool too.
@Techokami5 жыл бұрын
Keep the crazy MFM internal drive! That seems so wild that it would be a crime to undo it.
@Skaera75b5 жыл бұрын
I love your videos, Adrian. Thanks for cheering me up.
@Skaera75b5 жыл бұрын
ALSO, definitely make a SuperMac!
@raggededge825 жыл бұрын
Put it all back together! There's plenty of stock machines out there, this is a living snapshot of a machine that was well used and loved.
@elizabethannwoods51965 жыл бұрын
Looking forward to seeing it up and running that supermac magic. Great video!!
@ironhead20085 жыл бұрын
For goodness sake man, KEEP IT LIKE THAT! Period correct mods are really freaking cool!
@Sheevlord5 жыл бұрын
Considering the PSU repair: check the power transistor and any diodes you see for shorts. These are pretty common faults with SMPS and they are easy to diagnose and fix.
@Lurker19795 жыл бұрын
The Mac 512 was my family's first Mac back in the 80s. My dad decided to use a external harddrive instead of a internal one like this one. It was a large sucker. I think I still have it too. A whole 40 megs.
@ambirbtruckdriver5 жыл бұрын
That is awesome. Worth keeping around just because it’s so uncommon, I think. Plus it sounds like you know your way around MFM drives, so you can keep it going.
@HuntersMoon785 жыл бұрын
Put the craziness back together, don't go back to stock
@leogus10005 жыл бұрын
Keep it as it is. It's a unique computer with history from a different era. There are plenty of stock but only one as that one.
@BollingHolt5 жыл бұрын
Now THERE'S something you don't see everyday! I'm still trying to get my Mac Plus to boot from a SCSI2SD adapter I have mounted in an external SCSI HD enclosure. It recognizes it and can access it, but it won't boot from it. People have told me it is likely needing a ROM upgrade. I'm also lacking a terminator, so it may be two-fold. Cool machines, man!
@calebbell50185 жыл бұрын
I would love to see an image of that hard drive dumped somewhere! Keep it as is!
@BreakingBrick5 жыл бұрын
Please keep it as it is. Probably you should do a backup from the MFM. If you want, you could change the HDD against something with more disk space. I'm quite jealous about this little "power mac". Anyways, great content, glad to be a subscriber to your channel!
@AnalogX645 жыл бұрын
I had an Amiga 2000HD that had an MFM/RLL 20MB hard drive in it and when that died, I remember buying a Seagate 85MB - 5 1/4" Hard drive for $475 which was in the 90's was a lot and its still a lot today for a hard drive :)
@makingsense22685 жыл бұрын
KEEP THE HYPERDRIVE! That's totally badass, this is a 1337 Mac.
@GGigabiteM5 жыл бұрын
If you have an LCR meter or a capacitor tester, try removing all of the caps from the old power supply for the Hyperdrive and seeing if they're bad. Old electrolytic caps tend to dry up or leak and fail, causing whatever circuit they're in to not work. I've been repairing switching PSUs for nearly 20 years and the most common failure is bad capacitors, which can cause cascading component failure if the capacitor fails by becoming electrically leaky or going high ESR. Electrically leaky caps can cause heavy current draw in components supplying them, leading to things like blown diodes, cooked resistors and blown transistors or mosfets. Old and rarely used supplies like the ones you have usually suffer capacitor failure while not in use and just won't work at all until they're replaced.
@i-will-get-you-there5 жыл бұрын
keeping it as it and repair as needed to run correctly is my vote... Cheers
@jondorthebrinkinator5 жыл бұрын
An MFM drive in a Mac is definitely pretty unique. There were upgrade kits to add a SCSI interface to a 512Ke Mac similar to the controller that Apple added to the Plus, but I never heard of an MFM drive upgrade.
@DaveJustDave5 жыл бұрын
I'm surprised the Mac doesn't tip over from the gyroscopic forces of a mid 80s MFM drive!! Wow what a neat surprise
@StarkRG5 жыл бұрын
11:34 I'm willing to bet that those filter caps are not original. I have a 512k and it has the same kind of cap that was on your Plus. It hasn't exploded yet, but that's probably because it hasn't been plugged in for nearly two decades. I'm not sure, but it might be a 512ke (the guy who sold it to us back in 1988 or whatnot said it was), it definitely has been upgraded with a SCSI board that sits in the ROM sockets and the ROM chips sit in sockets on the SCSI board. Incidentally, though the 512k's ROMs were essentially the same as the 128k, the 512ke's ROMS were the same as the Plus. P.S. Back when we had a Hard Drive hooked up to our 512ke we had to make sure to turn it on and wait for it to spin up and for the happy disk ok sound the heads made when it was ready. Only then could we turn the computer on.
@Thingstest-rl8xu5 жыл бұрын
The HD"mod" was common to Non SCSI Macs including the fan used. Fan box is because of Size electronic and motor and too small fan to fit all of that in it. Some fans has big resistor (1 to 3 watts) to slow fan speed. If you have this do not let resistor to touch plastic parts. Fans there had a metal part or Velcro to mount. Side note: seems to have the later flyback likely because this Analog was replace and why has better caps too. Apple has several changes when this was replace using authorize shops because they send the dead boards back to Apple. Should have different marking somewhere on board to show version etc by Apple.
@primal-bits47775 жыл бұрын
It’s too unique to put back to stock. What a gem, keep it as is.
@doktor64955 жыл бұрын
ABSOLUTELY AMAZING!!! Definitively keep it as it is! Do you really think that the power supply is "too slow". It should start up in some milliseconds. Or is it the HDD? Does someone knows if that's "normal" behaviour? Regards Doktor64!
@delimitnc5 жыл бұрын
Keep the drive, it's part of the machines history.
@howard815 жыл бұрын
The 800k drive upgrade was an official upgrade offered by Apple. It includes a 800K floppy drive, with Mac Plus ROMs. My 512 has the same upgrade! Mac Plus ROMs are required to boot from a hard drive without using a boot floppy.
@doozowings46725 жыл бұрын
Wow, I found this Mac to be absolutely fascinating... I’m completely torn as to putting it back to original or leaving the mod... I love original but I find something extremely interesting about this one..
@KurisuYamato5 жыл бұрын
Keep it as it is. This kind of stuff is neat and while I'm personally a purist, if someone in the past has done a mod or it was a common vintage mod, no reason to revert the hard work.
@jussapitka60415 жыл бұрын
Definetely keep ot as is. It's a unique, period correct upgrade.
@geezerdiamond5 жыл бұрын
Oh definitely keep it 'as is' - someone went to a lot of trouble at the time, so it's a period upgrade. I'd probably replace the tape on the fan with something more permanent though!
@dragonhed1235 жыл бұрын
I laughed so hard out loud when you pulled out that cement spreader and said you used that I dont know why that was so funny but it was to me
@Nf6xNet5 жыл бұрын
I’d keep that period correct craziness in there. And how cool is it that you had a drop-in replacement power supply in your junk pile!
@andreassjoberg31454 жыл бұрын
Cool, I think I might have such a drive lying around that was still working when I shelved it in the late 90's.
@michaelperugini41995 жыл бұрын
No leave this like it is, this is an excellent MOD and was really cool. you have one that you put back original, now have this one as a mod
@jeffwads4 жыл бұрын
This is amazing. I have never seen that kind of setup.
@gallowsgryph5 жыл бұрын
You should totally try to make it work again. It's very unique, and it'd be a shame to loose that.