Fair enough :)

I chose the disk because before the switch everyone was boasting about how Linux doesn’t need much space 😅

I see what I can do, I deleted almost all snapshots and they get cleared after each system update so I have only a hand full.

UEFI Boot menu. Meanwhile, I managed to run GRUB, boot from another snapshot, set a new default and delete the culprit #835. Freed up some space, but still my disk is full, so now I need to find out why I guess.

When you are using the livecd are you booting all the way to the Ubuntu desktop?

Yes, I selected the “Install / Try” entry.

What gives you the nvme device name error?

I ran “sudo btrfs subvolume list /dev/nvme1n1p2” and got the errors:

ERROR: not a directory: /dev/nvme1n1p2 
ERROR: can't access '/dev/nvme1n1p2'

I think ChatGPT interpreted or assumed that theres a difference between how they are named in Ubuntu vs. how they are named in my actual system.

The output (run from my system, not from the Ubuntu Live System) of “df -h” is:

… /dev/nvme1n1p2 119G 113G 3.1G 98% / /dev/nvme1n1p1 511M 6.3M 505M 2% /boot/efi …

The amount of snapshots isn’t the problem. Sry, I forgot to add my snapper list output, but added it now. I only have 8 snapshots, when a new snapshot is made, the oldest is deleted (except for the unused current and the wrongly used #835).

It’s the #835 snapshot that seems to be taking up all the space.