How to clean install macOS Catalina from Bootable USB Drive

[@ReviewTechTV]

UPDATE - Fresh Install (macOS Big Sur) ➜ kzbin.info/www/bejne/b4Cuhp6Qgd-Emsk

[@tiktokbladi]

but mac 2019 is not show the option where to install from usb drive?

[@buttoye822]

kindly reply how we can save this image (dmg) file to save it for later , i mean i would like to know its location when we press Get in app store and it downloads i just want to copy the downloaded file to save

[@drgasparks]

Thank you, thank you, thank you:) Without going into details....money is rather tight right now. My wife, who is a heavy end graphics user, mostly the Adobe Suite, really needed a new computer. Her 2012 MacBook Pro was running sooooooo slow it was painful to even watch. I just finished upgraded her to 16gm Ram and put in a 1T SSD card. As you showed, I created a Catalina USB Boot Disk. I also recorded before and after time test. Before the upgrade it took 2:34 to boot up. After the upgrade, :27 seconds. Her disks speed went from 31.8 Write/26.3 Read to 398.9 Write/438.6 Read. All of this was done for about $160:) I've watched about a dozen different videos on how to do this and yours by far was the most informative and helpful. So thank you once again:)

[@thevoidire]

Yeah he did a great job on the video, expecally regarding the USB security. None of the other vids I've watched cover that

[@aeoniannox3795]

You're a savior!! I was panicking because I erased my hard drive since I have to sell it but I was unable to reinstall macOS no matter how many times I tried even in Internet Recovery (I even followed whatever tips I found but it was useless too). Your tutorial saved me from doom!! THANK YOU SO MUCH!!

[@ReviewTechTV]

Ok, according to Apple you can reinstall macOS like this: ➜ support.apple.com/en-us/HT204904

[@ReviewTechTV]

Additional information in the video description.

[@itguybd97]

thank you for this... I spent a solid 10 minutes trying to figure out what apple changed, an why i couldnt get past this security. I owe you a dono or something for your time on this man. saved me ten more minutes of getting frustrated at work.

[@ReviewTechTV]

If the video is too long, I put summary in the video description.

[@itguybd97]

@@ReviewTechTV Video was perfect, Time stamps were extremely helpful! Great Video. If you have a patreon/donation paypal. Would love to send you a small token of appreciate to get you a coffee at leaest.

[@IGOTNOSBOI]

Quick note if you guys want to install Mac OS on a portable usb drive you have to partion it first leave at least 12 gb for the “install Mac OS” and the rest for the actual Os

[@BK-km8ny]

I realize this video was created 2.5 years ago... but has anyone run into the problem where they do not have internet access and want to clean install? I get to the step at time stamp 10:45, but when selecting the boot device the laptop just hangs on the choose a network screen. can that be bypassed?

[@ReviewTechTV]

Please also read the summary in the video description.

[@jpnoita2223]

i am using mid 2011 and recently i have updated Catalina using Patcher but i am not able to enable airdrop option even i have tried to use defaults write com.apple.NetworkBrowser BrowseAllInterfaces 1 in terminal but still no shows. please help me if any one have ideas.

[@joshual.3645]

12:20 I am unable to erase the drive - when I click erase nothing happens and I'm still stuck on that screen. Any ideas?

[@ReviewTechTV]

Hard to say, Apple keeps changing the process: Chase A - Older Intel Mac Computers Chase B - Newer Intel Mac Computers Chase C - Apple M1 Computers

[@ReviewTechTV]

Since the introduction of the T2 Security Chip things are pretty much locked down, chances are you will need an internet connection, and your Apple ID to unlock it.

[@ВиталийОвчаренко-и1н]

To clean install macOS Catalina from a bootable USB drive, follow these steps: 1. First, create a bootable USB drive containing macOS Catalina by following Apple's official instructions. 2. Connect the bootable USB drive to your Mac and restart the computer. 3. Press and hold the "Command + R" keys during startup to enter Recovery Mode. 4. In Recovery Mode, navigate to the "Disk Utility" option and select it. 5. Choose your Mac's main hard drive from the list of available disks and click "Erase." Format it as Mac OS Extended (Journaled). 6. Quit Disk Utility and go to the "Reinstall macOS" option. 7. Choose the hard drive you erased earlier and follow the installation prompts. 8. Once the installation is complete, your Mac will restart with the freshly installed macOS Catalina.

[@ahmedjebreen2687]

Hello... I have MacBook Pro 2018 15" with macos High Sierra. I've tried this and unable to install the Catalina. Always directed me to High Sierra! Is there any advice? Thanks in advance ...

[@temario]

i´m downgrading from big sur to catalina, and my disk is not appearing as destination install, only appears the bootable usb. I tried to format the ssd but utility disk it doesn't let me either, so frustrating. thanks.

[@kicle877]

Thanks. I got it. How I have another problem during the build of the bootable Catalina USB. I am using a Mac Mini with Big Sur OS. I have got the error of '... the version you want to open is too old' during the opening of the Catalina.app file. Also the terminal command (to install the OS for this) is not working. I suspect, the Big Sur has block the operation. I am new to MAC platform, if you know how to get over this, please let me know. It looks like if you can us a older OS (before big sur) you can do it, ie I have seen several demo in YT channel using old iOS before Big Sur.

[@SonnyHung]

@ReviewTechTV - What Mac laptop model did you do use to create the USB Installer for Catalina?

[@AbodLive2080]

could you please share with me some direct links to download the macos Catalina 10.15.7 not from appstore

[@ReviewTechTV]

Please download from the App-Store, you can create a USB-Stick like this: ➜ support.apple.com/en-us/HT201372

[@Takussaagut]

Creat and thank you. Just wanted to add this info: in your case find my mac (my my iDevice) not turned on with earlier owner/user. That's why you didn't face iCloud activation lock (also known as hello screen), otherwise you wouldn't be able to fresh install this OS as you showed on this video. Creat video and explain. Thank you.

[@thierrycools1098]

hello, do you have a copy of sierra 10.12 ? this file isn't available on internet now. thank you

[@ReviewTechTV]

Unfortunately I don’t have a copy, but according to Apple you can download it from them directly: ➜ support.apple.com/en-us/HT211683

[@buttoye822]

@review tech tv , kindly reply how we can save this image (dmg) file to save it for later , i mean i would like to know its location when we press Get in app store and it downloads i just want to copy the downloaded file to save

[@MohammadSalah1979]

Amazing explanation because I have MacBook Pro 16 i have this problem cannot boot from usb

[@ReviewTechTV]

Yes, Apple has made the newer Mac much more secure, the T2 chip will lock down the system and prevent boot from USB-Media unless it is specifically enabled.

[@ReviewTechTV]

It’s a trade-off between security and ease of use, see video description for a detailed overview.

[@Phantom-darkness]

It will be slow to re-image as you’re coming from a compressed installer into a full image and verifying the data integrity as it goes so it’s more work than actually installing the OS.

[@MissNytesh]

Thank you! I couldn’t get it to work just from the guide. The thing I hadn’t done was format the drive, so good I found this video!

[@ReviewTechTV]

Great to hear!

[@karil7977]

i hit tab key nothing happend

[@ReviewTechTV]

Additional infos in the video description.

[@rhettshipley4593]

Can you use a hard drive in place of a usb drive? And then boot from the hard drive?

[@ReviewTechTV]

Sure, of course a usb hard drive will work as well, see video description for more info.

[@mohitduggal4252]

My battery had swollen so i got the battery out. Now i am not able to install the macos via usb bootloder. The message that it shows is cannot connect to the server. My 2011 macbook pro is now vintage and battery is not available. Is there any other way to install macos on my system?

[@ReviewTechTV]

According to Apple you can install macOS via USB like this: ➜ support.apple.com/en-us/HT201372

[@tekonesia]

Hello, what key to show the boot selector, u say press hold command but on may macbook pro toucbar 2019 cannot show, iam already change the allow instalation from removable disk. Thanks

[@ReviewTechTV]

Mac startup key combinations ➜ support.apple.com/en-us/HT201255

[@tekonesia]

Ok thanks, so then i press option button if i want instal from bootable disk?

[@ReviewTechTV]

Yes, exactly!

[@preetamzare]

Thanks a lot. It helped do the clean install. So many other videos are not talking about what have done here. Cheers.

[@ReviewTechTV]

Awesome, actually I didn't now myself that Apple had changed the process that much, it used to be very simple on the older Macs, but now with T2 security chip it can be quite confusing at first. Glad the video was useful.

[@petezaparti]

I created the bootable usb, however when I click the installer on the start up, it just brings up an image of a circle with a line crossed out. Please help.

[@ReviewTechTV]

How to reinstall macOS from macOS Recovery: ➜ support.apple.com/en-us/HT204904

[@ReviewTechTV]

Additional info on installing macOS Catalina in the video description.

[@VRJacky]

does this work if you have catalina installed already? im upgrading the HDD to an SSD

[@ReviewTechTV]

Sure, once you have created a bootable USB install drive you can use it to do a fresh install, more details see video description.

[@Senkii4]

U failed to mention (for the older models) that u need to format the drive to MacOS (Journaled).

[@Martin-ot7xj]

hi there , how to create big sur bootable usb on windows ?

[@Tchae]

Many thanks - helped me find the missing bit!

[@Devo1987]

How do you download with out a current mac os installed ?

[@ReviewTechTV]

How to reinstall macOS ➜ support.apple.com/en-us/HT204904

[@jamesjeongchoi6783]

Thanks much!!! I have a MacBook Pro Late 2011. Could it be possible to change DosDude1 Catalina to Official Catalina?

[@ReviewTechTV]

Only if your Mac supports it, older models like the MacBook 2011 are too old.

[@baileydale4257]

I'm having an issue - Once I'm in recovery mode, when I select Utilities > Startup Security Utility, it's not displaying the full menu options to adjust my security boot options, so I can't change them to allow external bootup? The only thing that comes up is the firmware password option.

[@ethandavis5130]

Did ya ever figure this out?

[@MacfadYT]

Am I supposed to install the OS Catalina in my USB or it doesnt matter?

[@ReviewTechTV]

Please look at the video description.

[@economicdevelopment5972]

Very informative. I have both M1 macs and Intel Hackintosh, so I am used to installing from USB, but this guide was very helpful. I did not realize that Macbooks now require that many steps, good to know!

[@ReviewTechTV]

Glad it helped! It was confusing to me as well in the beginning, I did not think about it much since I was used to the "old" way of installing from USB.

[@ReviewTechTV]

It’s a trade-off, the newer Macs have more security, which adds complexity, Apple calls the USB-Stick method “advanced” and "primarily for system administrators, or other experienced users”, so clearly they don’t expect you to do a fresh install.

[@Samthewham91]

Is there a specific format (apfs or mac extended journaled) that I should format my external drive? When I put my password in terminal, this came out: Usage: createinstallmedia --volume Arguments --volume, A path to a volume that can be unmounted and erased to create the install media. --nointeraction, Erase the disk pointed to by volume without prompting for confirmation. --downloadassets, Download on-demand assets that may be required for installation. Example: createinstallmedia --volume /Volumes/Untitled

[@ReviewTechTV]

You can easily create a USB install stick buy using this Apple support article: ➜ support.apple.com/en-us/HT201372

[@ReviewTechTV]

Only SSD and NVMe drives should use the new AFPS file system, if you follow the steps in the support article it should format it automatically before copying over the data.

[@MacfadYT]

Stop at volumes or MyVolume?

[@ReviewTechTV]

Details and support article are listed in the video description.

[@Tonyelaro]

Hi I am trying to erase as shown on 12 minutes and 18 seconds, I keep pressing the "Erase" button but it is not taking the command and erasing the hard drive. Does someone know why? Please if anyone can help. Thanks

[@ReviewTechTV]

Ok, according to Apple you can format like this: ➜ support.apple.com/en-us/HT208496

[@ReviewTechTV]

More details in the video description.

[@ft.studios5482]

when i get to utilities it says no administrator found

[@ReviewTechTV]

According to Apple you can re-install macOS like this: ➜ support.apple.com/en-us/HT204904

[@ReviewTechTV]

More infos and updated macOS Big Sur tutorial in the video description.

[@lazyninja4646]

Hello can I download the Mac os on my android phone and then shift in usb and later on flash it in my MacBook air 2012 ?

[@RKN786]

my computer is saying "Your Mac needs a firmware update in order to install to this volume." How can I proceed on this with this error?

[@ReviewTechTV]

Ok, firmware update can be made by downloading macOS from the App Store, more here: ➜ support.apple.com/guide/mac-help/how-do-i-get-firmware-updates-mchlp2609/mac

[@leoarjuncrasto]

Will I lose my data When Reinstalling Catalina? Because my Macbook isn't restarting right now.

[@ReviewTechTV]

Only if you delete the SSD/drive before reinstalling. You can also look at this Apple support article: ➜ support.apple.com/en-us/HT204904

[@cybersecuritypentestinginc2034]

thank you for putting very useful content

[@ReviewTechTV]

Glad you think so!

[@Jamie__Lowe]

I officially give up, I’ve tried everything and every time the installer finishes it says ( An error occurred while preparing the installation. Try running this application again ) Can anyone please help 😔

[@ReviewTechTV]

Newer Macs have an enhanced security feature that prevents doing a fresh install from USB, see video description!

[@ReviewTechTV]

On the one hand that’s great because if you loose you MacBook or somebody steals it they can literally do nothing with it, on the other hand it makes it more cumbersome to do a fresh install from an external media such a USB-Stick.

[@ReviewTechTV]

I mean even Apple calls the USB-Stick method “advanced” and "primarily for system administrators” and "other experienced users”, so no hard feelings, I would’t beat myself up about it.

[@ReviewTechTV]

If this method doesn't work for you have a look at the Apple support article called "Reinstall macOS”, as it may be easier: ➜ support.apple.com/guide/mac-help/reinstall-macos-mchlp1599/mac

[@Arcanethesis]

Thank you for your video! That Startup security Utility wouldn’t allow me to fully restore a time machine back up causing an error sign at the end of the restoration. I wasn’t Allowed to do a clean install because the system notice Big Sur was the current operating system And my MacBook Pro shipped with Catalina. Hence me watching this video….

[@abravesman64]

When you already have Catalina on your hard drive, but it’s not a fresh install, and you want to fresh install it, how do you wipe both partitions that Catalina has created when it was updated? I can wipe HD Data partition, but not system partition.

[@ReviewTechTV]

Question was already answered in part 3 of the video fresh install at around 11:55

[@makingmoneymatters4780]

great video..everything worked perfect

[@ReviewTechTV]

Great to hear!

[@kicle877]

Is there anyway to get the catalina since it is no longer available from Apple store. My old MacMini has a old HD failure and I want to change it to a SSD. I can't find the Catalina anymore despite this great video teaching me how to do it. Please help if anyone has the file.

[@ReviewTechTV]

I did download it recently, Catalina is still available: support.apple.com/en-us/HT201372

[@LRatedMedia]

OMG THANK YOU. I spent hours trying to figure out why after deleting the file off the computer why I couldn’t re boot the computer.

[@ReviewTechTV]

According to Apple you can install macOS like this: ➜ support.apple.com/en-us/HT204904

[@ReviewTechTV]

Additional infos in the video description.

[@Devo1987]

@@ReviewTechTV How do you download with out a current mac os installed ?

[@rishabhsingh2385]

You are superb bro I spend so much time that why ssd not detecting but anyhow its detected via your guidelines thanks

[@ReviewTechTV]

Happy to help

[@Jpryor991]

Says it has to verify with apple and then says An error occurred while preparing the installation

[@ReviewTechTV]

Ok, more details in the video description.

[@eddierey220]

Can I do this with a new ssd instead of usb stick? I want to replace my hdd from my iMac and install new ssd with Catalina instead.

[@ReviewTechTV]

More details on how to install macOS Catalina in the video description.

[@eddierey220]

Review Tech TV it says to use Mac OS extended format but it only shows afps

[@ReviewTechTV]

Ok, according to Apple you can format like this; ➜ support.apple.com/en-us/HT208496

[@ReviewTechTV]

APFS is used for SSD and NVMe drives, so it's normal.

[@ReviewTechTV]

While "Mac OS Extended" filesystem is only used for older hard disk drives.

[@mikeb8542]

When do you remove USB drive

[@ReviewTechTV]

I am not sure I understand your question, but I guess after you finish doing the fresh install.

[@debhhm2129]

Thanks so much for the information. Was fairly easy to install. If I have to do it again it will be a breeze.

[@ReviewTechTV]

You're welcome!

[@ReviewTechTV]

Basically it is similar to installing in the past, only the newer MacPro's have an additional step because of security reasons.

[@ReviewTechTV]

For people confused see case A and B in the video description, as well as the listed Apple support article.

[@Earthcitizen4609]

i was trying to avoid terminal makes me nervous

[@ReviewTechTV]

Don't miss the video description, support article, and overview listed there, also I made an updated video.

[@arpitaarora5286]

Extremely helpful, thanks

[@ReviewTechTV]

Glad it helped!

[@onextoronto]

Why it takes forever to Format the USB? Almost like 6 hrs.

[@ReviewTechTV]

For me it worked quickly.

[@mk-wq4rc]

Very usefull and helpfull, thanks for the video!!

[@marielleperry6290]

how can I do this and still save some files? I already backed up using time machine to an external hard drive and am confused about losing my files if I wipe my computer.

[@ReviewTechTV]

There are different ways to do it, you can also use macOS Recovery without deleting/formatting your drive ➜ support.apple.com/en-us/HT204904

[@kanchris2005]

Sir! Everything went good until formatting the ssd. and I can able to click on that install MAC OS but after few mins my macbook screen hanged at Apple logo, plssss help

[@ReviewTechTV]

Additional infos in the video description.

[@kanchris2005]

Create Success TV thanks I turn off and On the Mac and all okay! Thanks

[@ReviewTechTV]

@@kanchris2005 The old and new Macs are different, I put a short summary/overview in the video description.

[@kanchris2005]

Create Success TV thanks a lot for the tutorial! Great job

[@samwd5039]

I tried this but here is what i get, *Install macOS **Catalina.app** does not appear to be a valid OS* installer application. i downloaded the files from appstore. i am using el capitan any idea?

[@ReviewTechTV]

You can double check each step here: ➜ support.apple.com/en-us/HT201372

[@ReviewTechTV]

Before upgrading to Catalina please confirm your Mac supports the operating system: ➜ support.apple.com/en-us/HT210190

[@frankgtn]

Same thing just happened to me. Using a mid 2012 macbook pro, should be fully supported. Please help

[@ReviewTechTV]

@@frankgtn If you can download the latest OS from the App Store your Mac is supported.

[@ReviewTechTV]

@@frankgtn If you are running into trouble creating the bootable USB-Stick please refer to the step by step guide above.

[@iamdjrt]

if I aint use a ssd hard drive but a normal had..which format should I use to fresh install os?

[@ReviewTechTV]

If you still have an old hard disk drive “macOS Extended Journaled” should already be preselected: ➜ support.apple.com/en-us/HT208496

[@iamdjrt]

@@ReviewTechTV Ok thank u

[@iamdjrt]

@@ReviewTechTV I upgrade to Catalina and see Macintosh HD and Macintosh HD - Data...is this the right way it should show?

[@marlowemariano1632]

Does it requires internet connection when installing from usb drive?

[@ReviewTechTV]

More details in the video description.

[@marlowemariano1632]

@@ReviewTechTV I already downloaded macos catalina and created the bootable usb drive. Now I don't have an internet connection. Can I still go thru the installation process?

[@ReviewTechTV]

@@marlowemariano1632 Ok, according to Apple you can install macOS via USB: ➜ support.apple.com/en-us/HT201372

[@tanvirfarhan8127]

You are very good amazing it helped me a lot

[@ReviewTechTV]

Glad to hear that

[@ajaymiddha8698]

SIR WHEN I AM BOOT FROM USB DRIVE SCREEN SHOWS MACOS RECOVERY HOW I CAN SETTLE IN DISK UTILITY PLS EXPLAIN ME THANKS

[@ReviewTechTV]

You can use startup key combination to boot into recovery mode: ➜ support.apple.com/en-us/HT204904

[@ReviewTechTV]

Once in recovery mode you can access Disk Utility to format the drive: ➜ support.apple.com/guide/disk-utility/erase-and-reformat-a-storage-device-dskutl14079/mac

[@giannpieroechenique4734]

If you is interested in the greatest results that ive had was with the Mels Speed Method (i found it on google) definately the most useful resource i've followed.

[@parrostroika]

I’ve been stuck for a week at 11:01, the best thing happened only tonight where I selected Install macOS Catalina and it seemed to be working but for the seventh or so time I got “Install macOS Mojave”... do you have any idea why this is happening? Know that I followed your instructions 100%. Also, I’m using the exact same Samsung USB on a 2019 mbp 15

[@ReviewTechTV]

All new Mac's have the T2 security chip, that's why USB boot has to be enabled before, by default the system prevents starting an OS from an external media.

[@parrostroika]

Create Success TV thanks! However, I enabled “Allow External Media” through the Startup Disk Utility. It was not an access issue... regardless, the point is moot now. Apple gave me a 1:1 swap for the 16 in mbp which solved my larger issue of Catalina auto-waking from sleep.

[@ronaldomsjr]

Simple and direct. Thanks.

[@ReviewTechTV]

You're welcome!

[@AwaisGlobalsolutions]

great 👍 Very Helpful 👌 ...

[@JNagy129]

What year did you graduate from USC Law? I graduated in 2017

[@ReviewTechTV]

Oh, I am from Europe, was just visiting several universities, bought it as a souvenir, corner store Green/Main St, I miss the US, my time there was awesome, would love to live there one day, but visa seems to be hard to come by.

[@ReviewTechTV]

On the flip side, I love the fact that there are high standards, especially for the EB-5 investor visa, which makes me feel very motivated, that's what I love about the US.

[@nicola04]

Hello :) Did you try to install the Catalina on your Mac Pro 5.1

[@ReviewTechTV]

There are two ways to do it, either using the Dosdude1 patcher, or recently I discovered there seems to be a second option even without the patcher: forums.macrumors.com/threads/what-you-need-to-do-to-make-catalina-work-with-macpro5-1.2183978/

[@ReviewTechTV]

Main reason would be trying the new Sapphire Pulse Radeon RX 5700 ➜ geni.us/yCWxvc

[@ReviewTechTV]

Which apparently you need Catalina because older OS like Mojave don’t have the drivers for it.

[@ReviewTechTV]

I will probably end up testing on a separate SSD with my current RX580 GPU to see if Catalina can be used reliably, only then I would switch from Mojave to Catalina.

[@nicola04]

@@ReviewTechTV Thanks! Please share your experience.

[@XaiBeats]

Thank You

[@ReviewTechTV]

You're welcome

[@everfranca]

If You have already macOS Catalina installed in MacBook ? What are the steps ?

[@ReviewTechTV]

It is explained in the video, for summary look at the video description.

[@petergreppel2195]

This has been massively helpful. Thank you!!

[@ReviewTechTV]

Glad it was helpful!

You saved me, thanks man.

[@ReviewTechTV]

Glad I could help

[@taguotafecedric8690]

Very useful

[@ReviewTechTV]

Glad to hear that

[@Earthcitizen4609]

best explanation

[@ReviewTechTV]

Glad you think so!

[@prasannakumar727]

Thank you very much

[@ReviewTechTV]

Any time

[@yudhisthirsingh8401]

Very halpful. I updated my OS to bigsur and it bricked my macbook. I re-installed catalina by referring your video. Thank you very much. :)

[@ReviewTechTV]

Great to hear!

[@MrTroposphere]

GR8 VID< Cheerz

[@sandyskingdom8276]

Thanks brother

[@ReviewTechTV]

Any time

[@i_9330]

thanks a lot.

[@ReviewTechTV]

Most welcome!

[@colorfulpalette5196]

Thank you sooo much...

[@ReviewTechTV]

Welcome!

[@minachii5915]

LEGEND!

[@ReviewTechTV]

Read the description if you are running into trouble, working on a current macOS Big Sur tutorial, will be shorter and more concise, release this week, stay tuned.

[@ReviewTechTV]

New updated video for macOS Big Sur: ➜ kzbin.info/www/bejne/b4Cuhp6Qgd-Emsk

[@arnokleonald3025]

can I use ssd to boot??

[@ReviewTechTV]

Sure, the process was described in the video and there is a summary in the video description.

[@johnlangdon1473]

you mean hit the option key?

[@ReviewTechTV]

The process differs depending if you have an old or new MacPro.

[@ReviewTechTV]

See video description for explanation and key commands.

[@91mano81]

Was very informative, would have been better if it was short and sweet

[@ReviewTechTV]

More details on how to install macOS Catalina in the video description.

[@jennazarger6526]

It is taking my computer an incredibly long time to install the new OS. Like, 8 hours. Is this normal? Could I have done something different?

[@ReviewTechTV]

You can also do a fresh install of macOS from the recovery mode, there the speed depends on your internet connection, the OS should be several gigabytes of data: ➜ support.apple.com/en-us/HT204904

[@ЮрийКоханчук-щ1в]

MAC os fans when they discover that a functionality from BIOS 1998 can be added to mac os. But seriously that clarified things for a non-apple dude

[@David-du2fd]

Thank you very much, great video.

[@ReviewTechTV]

You are welcome!

[@ballykaur8310]

when it's asking password where do we type the system password

[@ReviewTechTV]

The password should be the same as your user account, when you turn on your Mac and login.

[@ReviewTechTV]

Details see video description.

[@ReviewTechTV]

Alternatively you can try to reinstall macOS from macOS Recovery: ➜ support.apple.com/en-us/HT204904

[@zyppoo3]

@@ReviewTechTV I get a pop up saying that an Admin couldn't be found when trying to update the security settings. Any thoughts?

[@ReviewTechTV]

@@zyppoo3 The password should be the same as your user account.

[@pekosemir]

great menn i newer use a mac and i make allll thx

[@ReviewTechTV]

Glad I could help

[@JCKlinger]

***READ ME*** jump to Min 8:08 if you want to get the actual instructions*****

[@ReviewTechTV]

All infos for quick referral the video description.

[@idpsalm3331]

Thanks for the tutorial but it keeps taking me to online recovery menu

[@ReviewTechTV]

Let me check

[@ReviewTechTV]

macOS Catalina install depends on your MacPro model, see case A and B in the video description.

[@ReviewTechTV]

You can also refer to this Apple support article: ➜ support.apple.com/en-us/HT204904

[@idpsalm3331]

@@ReviewTechTV 2019 model I am trying to install Mojave via a USB drive still d same don't know if Catalina will work

[@efrainrodriguez4578]

Thanks man!!

[@ReviewTechTV]

You are welcome!

[@madstore1192]

I erased all macos from macos utility how can i install new macos

[@ReviewTechTV]

I depends, there are several ways to install macOS, have a look at the video description, or this article: ➜ support.apple.com/guide/mac-help/reinstall-macos-mchlp1599/mac

[@daveyblackg]

This was great - got the old girl up and running.

[@jamezmadness777]

thx so mustttttttttttttttttttt

[@sainiranjan40]

Please consider cutting short your videos length. Thanks

[@ReviewTechTV]

Many people use the navigation below the video to save time: Part 1 - Intro ➜ (0:00min) Part 2 - Bootable USB-Stick ➜ (1:56min) Part 3 - Fresh Install ➜ (7:41min) Part 4 - Summary ➜ (16:26min)

[@ReviewTechTV]

There is also a short summary given in the video description which you can use if you like.

[@sainiranjan40]

@@ReviewTechTV That helped. Thanks! :)

[@michag5561]

Used same USB stick 🤣

[@mooooooon9296]

You speak too much man . be to the point .

[@ReviewTechTV]

Ok, many of my viewers use the navigation below the video.