[ale] UEFI vs BIOS understanding

Jim Kinney jim.kinney at gmail.com
Sun Dec 20 12:29:48 EST 2020


Does gpt require efi?? I know efi doesn't use an mbr partition. But I think gpt can support either efi or mbr. For new hard drive and modern kernel , 3.1+, gpt is what I've used regardless of efi/mbr. 

Note that fdisk on centos 7 still says it doesn't fully support gpt. Not sure what version it's using. I just use gdisk.

On December 20, 2020 12:23:06 PM EST, David Jackson via Ale <ale at ale.org> wrote:
>Hey Everyone,
>
>I just want to make sure I'm on the right page with my understanding.
>
>In my Arch install script, I first check for the existence of
>/sys/firmware/efi/efivars.  If that does not exist, I assume I do not
>have
>a fully compliant EFI bios and I proceed to format the disk with an MBR
>partition table.  If I do have that efivars directory, then I assume my
>bios is close enough and I proceed to partition the disk as a GPT disk.
>
>So far, I have not run across a problem with this logic, but what do
>you
>guys think?
>
>TIA

-- 
Computers amplify human error
Super computers are really cool
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