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My trusty 5,1 won’t let me create a boot drive using OpenCore/Monterey. | MacRum...
source link: https://forums.macrumors.com/threads/my-trusty-5-1-wont-let-me-create-a-boot-drive-using-opencore-monterey.2356100/
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MP 1,1-5,1 My trusty 5,1 won’t let me create a boot drive using OpenCore/Monterey.
May 21, 2009
Minneapolis
I go through all of the steps, and it gives me the error message shown below. I just installed Catalina on this old 2010 Mac, without any problems whatsoever… But it won’t let me get past creating the installer for Monterey.
I would be grateful for some advice.
I would be grateful for some advice.
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A7D90B54-56E3-4C84-A846-536B4730D3A2.jpeg1 MB · Views: 38
paronga
macrumors member
Nov 9, 2011
Australia, Melbourne
Could be an issue with the DMG being corrupt? Perhaps the download had an issue?
May 21, 2009
Minneapolis
I have downloaded it three times and placed it in the applications folder, or the desktop just to see if that made a difference. It didn’t of course. The install package that PKG is over 12 gigs, but the installer itself is about five gigs… In any case I’ve done it that many times and every time I get to that screen, it fails there. I even tried changing the thumb drive from GUID to master boot record, just to see what would happen. Clearly that’s not going to make a difference, but I really tried everything that I can think of. Somebody somewhere I’m sure knows or is familiar with the screen and perhaps can point me in the right direction. Thank you for your reply.Could be an issue with the DMG being corrupt? Perhaps the download had an issue?
paalb
macrumors regular
Dec 17, 2019
I have had problems with installers giving errors like that. Selecting an other way of downloading solved it. This page lists 8 different ways https://mrmacintosh.com/how-to-download-macos-catalina-mojave-or-high-sierra-full-installers/
May 21, 2009
Minneapolis
Thank you friend. I have to download the installer to an old mbp running high sierra (unfortunately). And because the only other way i can find to get Catalina or Monterey is through the app store links, I have no other option but to get it through the OpenCore download.I have had problems with installers giving errors like that. Selecting an other way of downloading solved it. This page lists 8 different ways https://mrmacintosh.com/how-to-download-macos-catalina-mojave-or-high-sierra-full-installers/
My Terminal won't give me a download, even when I copy and paste the command line perfectly. In every case, that just brings me to "help" screen in terminal.
Its frustrating. OPenCore doesn't work for me because I am too dense to understand every detail.... and so far I've only been able to upgrade my 2010 mac pro to any different, is via the dosdude catalina patcher.
Is there ANY direct link to Monterey (or even Big Sur) that won't otherwise refuse my attempt to download because I'm using an old MBP for such?
Macschrauber
macrumors 68000
Dec 27, 2015
1,887
Germany
OpenCore on the Mac Pro
This guide explains how to use the excellent OpenCore boot loader to install, run, and update the latest version of macOS on the MacPro5,1, resulting in a clean, unaltered operating system just like on a supported Mac.
forums.macrumors.com
May 21, 2009
Minneapolis
Thank you.search for Full InstallerOpenCore on the Mac Pro
This guide explains how to use the excellent OpenCore boot loader to install, run, and update the latest version of macOS on the MacPro5,1, resulting in a clean, unaltered operating system just like on a supported Mac.
forums.macrumors.com
That's what I thought I'd been doing, but obviously not effectively. ... and, I downloaded it 3 times using the OpenCore utility. Each one was the exact same size, and I couldn't get the thing to finish making a usb drive to install monterey.
So, I'm trying to find another link to the full installer.
Macschrauber
macrumors 68000
Dec 27, 2015
1,887
Germany
You will better read, it describes a method with installinstallmacos.py
Reactions:
paalb
Use open core legacy patcher. It makes the process easier.
Search OCLP on git hub
Search OCLP on git hub
paalb
macrumors regular
Dec 17, 2019
Have a look at the screenshot in first post. The error is from OCLP.Use open core legacy patcher. It makes the process easier.
Search OCLP on git hub
May 21, 2009
Minneapolis
Other than open core, I can’t seem to find a direct link to download that OS. I’m on a 2010 Mac Pro 5,1 with 144.00 bootrom. It seems there lots of links to ways you can finagle a possible download going through terminal, etc. but none of that has worked for me.
May 21, 2009
Minneapolis
Right now I want to try to use RomTool to successfully clear the boot ROM before I break the machine. And so far, I haven’t been able to do it with that tool (with SIP disabled, mind you)
When you mention you are trying to clear the BootROM, could you provide more details as to what BootROM are you trying to flash? Is it a reconstructed BootROM or an old backup of yours?Right now I want to try to use RomTool to successfully clear the boot ROM before I break the machine. And so far, I haven’t been able to do it with that tool (with SIP disabled, mind you)
Macschrauber
macrumors 68000
Dec 27, 2015
1,887
Germany
You can't clear the boot rom with RomTool. You can just dump it. Clearing the boot rom is a manual procedure. @tsialex is the mastermind what offers that service.Right now I want to try to use RomTool to successfully clear the boot ROM before I break the machine. And so far, I haven’t been able to do it with that tool (with SIP disabled, mind you)
I made a combined tool to dump and analyse the bootrom.
with demonstration in YouTube: latest version:
Last edited: 5 minutes ago
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