Confirmed... Your iMAC 5,1 has 32bit EFI:
Code:
64-bit Macs that use a 32-bit EFI. These tend to be all of the Core2Duo models from late 2006. More specifically:
iMac 5,1 – iMac 5,2 – iMac 6,1 <-- Yours is here
Macbook 2,1 <-- This one is mine.
MacBook Pro 2,1 – MacBook Pro 2,2
Mac Pro 1,1
Xserve 1,1
RE:
https://mattgadient.com/linux-dvd-im...e-2006-models/ <-- This site has patched Linux ISO's w/ 32bit EFI files. Includes patched ISO for Lubuntu 22.04.
https://github.com/jmstriegel/linux_2006_imac_5.1
https://github.com/faalbers/EFI_32_BIT <--- THIS IS WHAT I USED...
This also works for 32bit EFI:
https://sourceforge.net/projects/refind/
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