GParted shrinks the partition and then reput it to its original size

Question

I'm working on a live ubuntu, I have a non system disk with just one partition sda (not mounted) taking all the disk. I want to shrink the partition to create a second one after. Gparted does the job, says it's OK, but when I close the resizing window after it has finished, I still have my partition taking all the disk, only the filesystem is shrunk, so I can't create a second partition. Gparted show an exclamation point on the partition. When I open the information it says the filesystem is not taking all the space, I can correct it with check. If I do it i return to my starting point.

Any idea please ?

Edit, here is gparted after the resizing :

Do you have a backup of the data on this disk? It would be wise to make one if not. Your disk appears to be mounted at /mnt/2ttd and from what you have shown us there is no partition. Just a filesystem on a device. Ideally delete everything, create the partitions and restore the data from backup — PonJar, Apr 21 '22 at 09:05
Thank you PonJar, I guess this is the good way to go, I noticed my partition was named sda and that should be the name of the device. — mathieu.letombe, Apr 21 '22 at 09:45
See Is there any benefit to partitoning hdd data-only disk? for other reasons for partitioning a disk. — user68186, Apr 21 '22 at 16:50
Yes, in my case I think I was too sure I didn't need several partitions in the future, I don't remember what happened in my head at this moment. — mathieu.letombe, Apr 21 '22 at 18:57

score 0 · Answer 1 · answered Apr 21 '22 at 16:20

Thanks again PonJar, that was it. I had a file system without partition (no partition table) in my disk, I did wrong things when I installed Ubuntu on my new PC. Saving datas elsewhere, creating partition table, creating partitions, was the good way to go.

GParted shrinks the partition and then reput it to its original size

1 Answers1