Re: booting by UEFI?

[Felix Miata <mrmazda@stanis.net>]

Eben King composed on 2024-12-29 11:26 (UTC-0500):

> My motherboard is a Gigabyte H170 with 32 GiB RAM and I run Debian 12.8.  I

This Gigabyte is slightly newer:
$ inxi -M
Machine:
  Type: Desktop System: Gigabyte product: B250M-D3H v: N/A
    serial: <superuser required>
  Mobo: Gigabyte model: B250M-D3H-CF v: x.x serial: <superuser required>
    UEFI-[Legacy]: American Megatrends v: F10 date: 12/14/2018
$

> swear I ran a program that showed me EFI boot vars (if they exist) and it
> showed nothing.  But now I can't remember what that program was.  How can I
> ensure that I'm actually booted using EFI?

# efibootmgr
EFI variables are not supported on this system.
#

When booted in EFI mode, the result will instead be information about existing EFI
boot entries, e.g.:
# efibootmgr
BootCurrent: 0001
Timeout: 1 seconds
BootOrder: 0000,0001,0002,0003
Boot0000* debian12
Boot0001* UEFI OS
Boot0002* Hard Drive
Boot0003* CD/DVD Drive
#
-- 
Evolution as taught in public schools is, like religion,
	based on faith, not based on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata