I mistakenly picked the wrong disk volume with GParted and chose either the "Create partition table" or "Partition->new" (not sure).
I realized the error before applying the change and exited GParted. I had an error message explaining me the disk was going to be invisible from the disk browser (or something like that) until I reboot my Linux. What I did.
My disk is not visible anymore from the disk browser after a reboot. This disk is a data volume with no boot sector and no operating system: only data.
This disk was formatted with an ext4 partition and encrypted with cryptsetup in luks format.
Is there a way to undo this partition creation that seems to overwrite my old encrypted partition?