fstab

config filesystem

Filesystem mount table — persist mounts across reboots

/etc/fstab

Mount Entry

Device / UUID / LABEL

Use UUID for reliability (run 'blkid' to find)

Mount point

Filesystem type

Mount options

Comma-separated (e.g. defaults,noatime,nofail)

Dump (backup)

Pass (fsck order)

# <device> <mount point> <type> <options> <dump> <pass> /dev/sdb1 /mnt/data ext4 defaults 0 0