Silly question that I haven't found an answer yet. Is it possible to permanently upgrade the EFI in a MacPro 1,1/2,1 to the true 64 bit version? I know you can use a "utility" like Piker's boot.EFI, but if you try yo install updates, they over write that boo.EFI and you're bricked.
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Permanently upgrage EFI from 32 bit to 64 bit in older Mac Pro
- Thread starter CharCat
- Start date
- Sort by reaction score
jbarley
macrumors 601
Updates are golden if you have "boot64" installed.
https://forums.macrumors.com/threads/2006-2007-mac-pro-1-1-2-1-and-os-x-el-capitan.1890435/page-56
post #1391
boot64 monitors the boot.efi file, and if Apple modifies it, boot64 changes it right back.
Works like a dream, never had a bricked update since I installed it.
https://forums.macrumors.com/threads/2006-2007-mac-pro-1-1-2-1-and-os-x-el-capitan.1890435/page-56
post #1391
boot64 monitors the boot.efi file, and if Apple modifies it, boot64 changes it right back.
Works like a dream, never had a bricked update since I installed it.
Last edited:
DearthnVader
Suspended
It's a computer, and it has a 64bit cpu, so it would be possible, it's just not very likely.
Apple could have done it, but they wanted to sell new Macs, and didn't care who they screwed over to do it.
Apple could have done it, but they wanted to sell new Macs, and didn't care who they screwed over to do it.