We will need two formats for the hybrid mode, ptable: gpt and ptable:
dos
For gpt, the config from comment #1 applies, we'll have both bios_grub
and an efi partition (possibly a secondary for resilient boot).
For dos, we'll have:
config:
- id: main_disk
type: disk
ptable: dos
serial: disk-a
name: main_disk
wipe: superblock
- device: main_disk
id: main_disk_part1
number: 1
size: 10G
type: partition
grub_device: true
flag: boot
- device: main_disk
id: main_disk_part2
number: 2
size: 512M
type: partition
grub_device: true
flag: esp
wipe: superblock
Curtin currently uses 'boot' to mean toggle the DOS boot flag so we'll need to
do something to trigger marking this. I've suggested 'esp' here to
map to the 0xef code and we'll need to see if parted will let us do this, or
use sfdisk or something else to directly toggle the type.
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https://bugs.launchpad.net/bugs/1827929
Title:
curtin should support making installed systems BIOS+UEFI hybrid
bootable
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