Bug#1114894: OS-Prober generates not running entries for Debian 12

[Debian]

Am 14.09.25 um 20:41 schrieb Pascal Hambourg:
>> What's about this two lines?
>>
>>      linux /boot/vmlinuz-6.1.0-39-amd64 root=/dev/sdb2
>>      initrd /boot/initrd.img-6.1.0-39-amd64
>
> They do not match "linux /vmlinuz root=/dev/sda2" in any way: the 
> kernel and initramfs pathnames and the root device are different.
That's the reason for this bug report. :-)
This has been generated by the scripts from grub.
>
> Ideally, linux-boot-prober collects menu entry information (entry 
> label, kernel path and parameters...) from grub.cfg when it is present.
Why this?

So there is placed a wrong UUID grabbed from scripts even it is read 
from the correct partition.

Now it is not surprising that there is so much chaos in the generation 
of the files, when someone works with much different OS in different 
partititons.
The other versions of OS will not update the grub.cfg when there is no 
upgrade that calls the update-grub.

> I copied your Debian 12 grub.cfg to a test partition and 
> linux-boot-prober and os-prober generate the expected kernel command 
> line.
>
>> I can only say that the update-grub scripts don't work for me, 
>> because there are many boot partitions and I am cloning versions of 
>> an OS to work with.
>
> Maybe there are some leftovers from previous versions which cause 
> this. I still cannot figure out how linux-boot-prober /dev/sdb2 could 
> possibly generate the lines your reported in you previous post. While 
> or after running it, could you check its debug logs in the system logs 
> (in /var/log/syslog or with journalctl depending on which logging 
> daemon you have) ?

A new update-grub is called in Debian 13 and the syslog output is attached.
Hopefully this will help.
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