Ubuntu
curtin package

  1. Bug #1827929
  2. Comment #8

Comment 8 for bug 1827929

Revision history for this message
Steve Langasek (vorlon) wrote : Re: [Bug 1827929] Re: curtin should support making installed systems BIOS+UEFI hybrid bootable

On Fri, May 22, 2020 at 04:09:51PM -0000, Ryan Harper wrote:
> We will need two formats for the hybrid mode, ptable: gpt and ptable:
> dos

I don't see why this should be the case. Are we not emitting GPT everywhere
today, even when the system is booting in BIOS mode? Late-model BIOSes do
support booting from GPT; I would think at this point anything that doesn't
support GPT is too old to be of practical concern.

So a GPT table with a bios_grub partition and an EFI System Partition should
suffice.

> For gpt, the config from comment #1 applies, we'll have both bios_grub
> and an efi partition (possibly a secondary for resilient boot).

Resilient boot is only applicable in the case of multiple disks; and then
each disk in the root set should have exactly one ESP and exactly one
bios_grub partition.

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Debian Developer to set it on, and I can move the world.
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