1. Goal
Reliably identify disks, partitions, and UUIDs before touching mounts or boot settings.
2. Files and components involved
/sbin/lsblk
/sbin/blkid
/dev/disk/by-uuid
/etc/fstab
3. Operational flow
lsblk -o NAME,SIZE,FSTYPE,UUID,MOUNTPOINT
blkid
ls -l /dev/disk/by-uuid
4. Operational verification
grep UUID /etc/fstab
findmnt -D
lsblk -f
5. Practical notes
Before touching disks, mounts, and filesystems, note the UUIDs, current outputs, and the latest valid backup available.
When you work on storage and filesystems, the rule stays the same: first identify the right device, then modify, and finally verify.
Quick checklist
[ ] Backup or copy of the existing configuration completed
[ ] Files and commands updated as expected
[ ] Local test completed successfully
[ ] Logs or final output verified
[ ] Rollback procedure documented