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Nix7

macrumors newbie
Original poster
Sep 11, 2024
2
0
Hello asking for advice

my father 83 still running with his Mac 5,1 2010 editing photos lightroom and editing movies had a catastrophic hard drive failure and a drobo system that failed at the same time, recovery has been difficult, new drives bought, drobo thrown in the bin and system rebuilt to pre crash from drives that still functioned as drobo was no help 🪦
So I find that he never went past el-capitan and was finding not being able to buy his weekly shop and order medicines from pharmacy via firefox and not able to download anything else I assume this is the planned sunsetting of browsers and el-cap OSX. Other siblings get new computer, me surely we can fix it so.

After reading up online it could be officially upgrade to 10.14.6
I have incrementally upgraded the os to Mojave using a new Samsung 870evo ssd drive, but looks like in haste to carry onto open core legacy patcher I overwrote the main Mojave efi partition instead of a usb drive as I would like to take this to Monterey atm as I think the gfx card will not work going past that as I can’t see it listed, can anyone confirm
AMD Radeon R9 280x 3gb this was installed by a third party after the original stopped working and assume it is metal compatible as I got to Mojave with the firmware boot loader to 1.14.0.0.0.0.0

So I did the following

- Clicked build and install open core before creating mac os installer
- I overwrote the efi partition on the main current Mojave disk install instead of separate usb
- upon prompt clicked reboot selected the efi open core and it just showed a no-entry sign. Panic 🫨
- can the efi partition be undone as I seem to not be able to go to recovery mode (cmd r) as my understanding this would have been overwritten.

Can this be install be carried on or reverted as I started to look at getting the unistall pkg et all but think that would just remove the program rather than revert the install over the ego partition

Thanks in advance
 

tsialex

Contributor
Jun 13, 2016
13,454
13,601
Get a small/cheap 128 or 256GB SSD and install Mojave completely bare metal, no OC/OCLP/etc, just the Mojave. Use this SSD as your rescue disk.

After you got it fully working, you then think about installing any unsupported macOS release to the main SSD. Not having a Mojave rescue disk got you where you are now…
 
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Nix7

macrumors newbie
Original poster
Sep 11, 2024
2
0
Get a small/cheap 128 or 256GB SSD and install Mojave completely bare metal, no OC/OCLP/etc, just the Mojave. Use this SSD as your rescue disk.

After you got it fully working, you then think about installing any unsupported macOS release to the main SSD. Not having a Mojave rescue disk got you where you are now…
Thank you for the reply, drive ordered

Kind regards
 
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