I know I'm not running the latest LTS, but 16.04, yet I tried Etienne's advice (because it seems to make perfect sense), but fsck wasn't allowed to fix a FAT-mismatch:
sudo fsck.vfat /dev/sdf1 fsck.fat 3.0.28 (2015-05-16) FATs differ but appear to be intact. Use which FAT ? 1) Use first FAT 2) Use second FAT ? 1 Perform changes ? (y/n) y /dev/sdf1: 25 files, 445911/487648 clusters Writing 1950600 bytes at 2243584 failed: Operation not permitted Seems like the readonly even applies to "sudo fsck". Permissions of the block device are: brw-rw---- 1 root disk 8, 81 Sep 28 23:04 /dev/sdf1 As it seems that this issue is still open, I hope that maybe someone might find this information useful for debugging. Thanks for any hints! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1021375 Title: Nautilus says the USB stick is read only when it is not To manage notifications about this bug go to: https://bugs.launchpad.net/nautilus/+bug/1021375/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs