Re: GPT without EFI: HowTo?

> On Oct 9, 2019, at 3:03 AM, Daniel Spannbauer <[email protected]> wrote:
>=20
> I try to install a system with GPT and grub2 without EFI. AS far as I
> know I need some space for the grub2 stage2 at the first place of the
> harddisk with the ID "bios-boot"
>=20
> But how can I do this via autoyast?

In Leap 15.x and SLES 15, it defaults to GPT layout, even on BIOS-based sys=
tems (unless, of course, you use '<disklabel>msdos</disklabel>').  It will =
automatically create either an 8 MB BIOS boot partition (BIOS) or a 500 MB =
EFI system partition (UEFI), unless you explicitly define them.

My profile only contains a root FS and swap partition, and the installer ad=
ds a BIOS boot partition or EFI system partition as needed.  I did make an =
alternate EFI profile which defines a 16 MB ESP, just to save space on VMs,=
 but I have never defined a BIOS boot partition.

Note that this does not apply to SLES 12/Leap 42.x and earlier.  To run tho=
se on UEFI, you need to define an ESP; in BIOS mode, they use msdos layout =
and no BIOS boot partition.


Andrew Daugherity
Systems Administrator II
Division of Research, Texas A&M University=
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