Hello Pascal
Thank you very much for help with commands.
Yes, you have true. If is my interpretation of outputs of commands correct,
main of Ubuntu based distribution use subvolumes. Only Ubuntu Desktop not use
subvolumes. Only Ubuntu Desktop finds os-prober correct.
It is very valuable information for developers, how to repair this bug.
More information on screenshots on this link
https://imgur.com/a/tJ0MDzU <https://imgur.com/a/tJ0MDzU>
Other my tests:
I installed more distributions on the same SSD on ext4 on the same PC. All work
correct. On every last installed distribution are automatically displayed
previous installed distributions in GRUB. On BTRFS no.
Source of issue are BTRFS subvolumes.
______________________________________________________________
Od: "Pascal Hambourg" <[email protected]>
Komu: "Matej Marko" <[email protected]>
Dátum: 15.02.2025 13:09
Predmet: Re: os-prober issue. Not find all distributions on multi boot SSD
CC: <[email protected]>
On 15/02/2025 at 10:09, Matej Marko wrote:
> No, I am not used subvolumes. It is not subvolumes, I think. I created
> very simple partitions in distribution installer.
Be aware that some distribution installers may implicitly create
subvolumes. For example the Debian installer creates a subvolume
"@rootfs" for the root filesystem, but Debian's os-prober looks only
into the top-level subvolume (or the first mounted subvolume) when
probing GNU/Linux systems.
You can check subvolumes in an unmounted btrfs filesystem with:
# mount /dev/sda2 /mnt
# btrfs subvolume list /mnt
# btrfs subvolume get-default /mnt
# umount /mnt
