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
