Dear Debian folks,
Am 09.06.20 um 00:40 schrieb Paul Menzel:
Package: grub-efi
Version: 2.04-8
Severity: normal
The x86 Dell system with UEFI firmware has the partitions below, where
the first one is the ESP (and /boot), and the second one is encrypted
with LUKS.
$ lsblk -o NAME,UUID,LABEL,PTTYPE
NAME UUID LABEL PTTYPE
nvme0n1 gpt
├─nvme0n1p1 D34D-47A3 ESP gpt
└─nvme0n1p2 b88be798-13e3-4884-9748-bf7a23f0ae87 gpt
└─nvme0n1p2_crypt c9342a55-b747-4442-b2f4-bc03eb7a51cf
With Debian Sid/unstable, the wrong partition UUID is put into `load.cfg`.
$ sudo grub-install -v
[…]
grub-install: info: grub-mkimage --directory
'/usr/lib/grub/x86_64-efi' --prefix '/boot/grub' --output
'/boot/grub/x86_64-efi/core.efi' --dtb '' --format 'x86_64-efi'
--compression 'auto' --config '/boot/grub/x86_64-efi/load.cfg' 'ext2'
'search_fs_uuid'
[…]
$ more /boot/grub/x86_64-efi/load.cfg
search.fs_uuid c9342a55-b747-4442-b2f4-bc03eb7a51cf root
set prefix=($root)'/boot/grub'
GRUB then says, it can’t find c9342a55-b747-4442-b2f4-bc03eb7a51cf
and drops into rescue mode. For whatever reason, the partitions are
not detected, and GRUB only sees `(hd0)`. Of course, no modules can be
loaded, and I am unable to check what modules are loaded.a
`grub-install --boot-directory=/boot --efi-directory /boot/efi` doesn’t
make a difference either.
$ sudo strings /boot/efi/EFI/debian/grubx64.efi | grep gpt
$ sudo strings /boot/efi/EFI/debian/grubx64.efi | grep -C 3 c93
.module_license
.bss
.modname
search.fs_uuid c9342a55-b747-4442-b2f4-bc03eb7a51cf root
set prefix=($root)'/boot/grub'
/boot/grub
Interestingly, starting a live system, like Grml (daily), chroot’ing
into the system `/mnt` (with `/dev/nvme0n1p1` mounted under
`/mnt/boot/`), running `grub-install --efi-directory /boot/efi` creates
a working image.
$ sudo strings /boot/efi/EFI/debian-backup/grubx64.efi | grep gpt
partmap/gpt.c
part_gpt
grub_gpt_partition_map_iterate
(,gpt1)/grub
Please find the verbose output attached.
That was for the non-working case with the installed Debian Sid/unstable.
Kind regards,
Paul
