I tried to run fsck, but it did not work.
It seemed to want an ext2 or ext3 or ext4 file system. But the USB hard disk is a fuse filesystem.
The full text is:
[
[email protected] /]$ fsck /run/media/u/'My Passport' -a
fsck from util-linux 2.36.1
fsck.ext2: Is a directory while trying to open...