Hi, deloptes wrote: > I am not sure if grub can boot off GPT without UEFI.
That's the use case of the GRUB BIOS boot partition with Type GUID 21686148-6449-6e6f-744e656564454649. See "GPT" section in https://www.gnu.org/software/grub/manual/grub/html_node/BIOS-installation.html It is necessary with GPT because the GPT header block occupies room where GRUB would classically store follow-up code for the code in the MBR. > The GPT is part of the UEFI specs Which is very friendly of Intel, because with GPT we don't need to look at Wikipedia for technical specifications. But, as said previously, old PC-BIOS does not care for partitions. GRUB does. Normally it can handle partition tables if the necessary GRUB modules are loaded. For GPT: insmod part_gpt Have a nice day :) Thomas