I am trying to help a user solve an issue with a bootable USB drive, but there seems to be a file whose ownership cannot be edited. I thought it would have been possible with:
sudo chown user:user ldlinux.sys
When that is executed, however, terminal gives this error:
Operation not permitted
The extended chat I had with the user can be found here.
Probably the file has the immutable flag set in its extended attributes:
user@user-X550CL ~/tmp % touch immutable
user@user-X550CL ~/tmp % sudo chown root:root immutable
[sudo] password for user:
user@user-X550CL ~/tmp % sudo chattr +i immutable
user@user-X550CL ~/tmp % lsattr immutable
----i--------e-- immutable
user@user-X550CL ~/tmp % sudo chown user:user immutable
chown: changing ownership of 'immutable': Operation not permitted
To fix this, just run sudo chattr -i file:
user@user-X550CL ~/tmp % sudo chattr -i immutable
user@user-X550CL ~/tmp % lsattr immutable
-------------e-- immutable
user@user-X550CL ~/tmp % sudo chown user:user immutable
user@user-X550CL ~/tmp %
sudo chattr -a fileName solved the problem.
Sep 20, 2016 at 15:42
sudo chattr -i returning chattr: Operation not supported while reading flags.
Oct 16, 2017 at 16:35
msdos filesystem. Found this: unix.stackexchange.com/questions/552121/… so I went ahead and reformatted as ext4 per askubuntu.com/questions/149984/…
Oct 25, 2020 at 19:39
Operation not supported error when trying to mount a Windows filesystem (exFat/NTFS) with incorrect mount options. You can either reformat your drive to ext4, or simply change the mount options with this answer: askubuntu.com/a/956072/612853
getfacl ldlinux.sysmount.id. This error can appear if your user by some reason was assigned to another group. In normal situationidshould look like thisuid=1000(username) gid=1000(username) groups=1000(username). You can check and change it in/etc/passwdfile as well.