Am 11.09.25 um 13:38 schrieb Pascal Hambourg:
On 11/09/2025 at 11:50, Debian wrote:
this entry is generated, that ends somehow in a shell without
starting the graphical interface
What kind of shell ? grub shell, initramfs shell, emergency shell,
login prompt ?
As I can remember it was a regular login prompt and not a emergency shell.
I did wonder why the graphical interface did not start.
linux /vmlinuz root=/dev/sda2
initrd /initrd.img
Is it the exact generated entry ?
Yes - look above for the generated part of the grub.cfg.
What is the output of linux-boot-prober /dev/sda2 (or whatever the
correct partition is) ?
# linux-boot-prober /dev/sdb2
/dev/sdb2:/dev/sdb2::/vmlinuz:/initrd.img:root=/dev/sdb2
/dev/sdb2:/dev/sdb2::/vmlinuz:/initrd.img:root=/dev/sdb2
/dev/sdb2:/dev/sdb2::/vmlinuz:/initrd.img.old:root=/dev/sdb2
/dev/sdb2:/dev/sdb2::/boot/vmlinuz-6.1.0-39-amd64:/boot/initrd.img-6.1.0-39-amd64:root=/dev/sdb2
/dev/sdb2:/dev/sdb2::/vmlinuz.old:/initrd.img.old:root=/dev/sdb2
/dev/sdb2:/dev/sdb2::/vmlinuz:/initrd.img:root=/dev/sdb2
/dev/sdb2:/dev/sdb2::/vmlinuz:/initrd.img:root=/dev/sdb2
/dev/sdb2:/dev/sdb2::/vmlinuz:/initrd.img.old:root=/dev/sdb2
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 1,8T 0 disk
├─sda1 8:1 0 10G 0 part
├─sda2 8:2 0 40G 0 part
├─sda3 8:3 0 40G 0 part
├─sda4 8:4 0 1K 0 part
├─sda5 8:5 0 256M 0 part [SWAP]
├─sda6 8:6 0 40G 0 part /ext
└─sda7 8:7 0 1,7T 0 part /srv
sdb 8:16 0 223,6G 0 disk
├─sdb1 8:17 0 50G 0 part
├─sdb2 8:18 0 50G 0 part
├─sdb3 8:19 0 50G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 40G 0 part /
└─sdb6 8:22 0 33,6G 0 part
sdc 8:32 1 0B 0 disk
sr0 11:0 1 1024M 0 rom
Incomplete entries with root=/dev/sd* instead of root=UUID can be
generated if /boot/grub/grub.cfg is missing in the foreign system. But
/vmlinuz is usually a symlink and linux-boot-prober fallback script
should ignore symlinks.
The error occurs after the upgrade when grub has been installed in
Debian 13.
The grub.cfg has been edited manually now and then it works for all
different OS-versions.
Is this the edited menu entry ?
No - it is the one above with the UUID that works.
linux /boot/vmlinuz-6.1.0-39-amd64 root=/dev/sdb2
initrd /boot/initrd.img-6.1.0-39-amd64
