Disk Tool & fstab

How do I find the UUID of a filesystem

Configure fstab

Note the UUID of the partition (recommended over device names like /dev/sda1, because device names can change).

lsblk

$ lsblk -f

NAME        FSTYPE FSVER LABEL   UUID                                 FSAVAIL FSUSE% MOUNTPOINTS
nvme0n1                                                                              
├─nvme0n1p1 vfat   FAT32 SYSTEM  B8E5-9E00                              51,6M    46% /boot/efi
├─nvme0n1p2                                                                          
├─nvme0n1p3 ntfs         Windows DAB0E6A2B0E6847B                                    
├─nvme0n1p4 vfat   FAT32 WINPE   F2E7-04CB                                           
├─nvme0n1p5 ntfs         Onekey  D4CEE938CEE91390                                    
├─nvme0n1p6 ntfs         WinRE   3474EB5574EB187E                                    
├─nvme0n1p7 ext4   1.0           14208604-a5ef-44f2-82e6-8d7e0db71919    8,8G    85% /
└─nvme0n1p8 ext4   1.0           4afbee46-d169-4e8b-aabd-45686c7d6cb6  437,1G    37% /home

blkid /dev/sda7

$ blkid
/dev/sda7: UUID="dffbe19f-eb0f-4027-8912-db9299ac26eb" TYPE="ext4" PARTLABEL="archive" PARTUUID="c4359d67-57b3-4595-8bad-175876fd71bb"

Identify HDD by SATA port number

$ lscscsi

fstab

# Create the mount point
$ sudo mkdir -p /mnt/data

# edit /etc/fstab
$ sudo micro /etc/fstab

# Add an entry in the format:
UUID=<your-uuid>  <mountpoint>  <filesystem>  <options>  <dump>  <pass>
## ex ext4 parttion
UUID=a1b2c3d4-e5f6-7890-1234-abcdef123456  /mnt/data  ext4  defaults  0  2
## Windows NTFS partition:
UUID=XXXX-XXXX  /mnt/windows  ntfs-3g  defaults,uid=1000,gid=1000  0  0
## FAT32 partition:
UUID=XXXX-XXXX  /mnt/usb  vfat  defaults,uid=1000,gid=1000  0  0
  
# Test the configuration (without rebooting)
$ sudo mount -a
$ sudo systemctl daemon-reload

Remove a SATA disk from a running system

$ device=sde; sudo sh -c "echo 1 > /sys/block/${device}/device/delete"
Written on March 16, 2019, Last update on December 10, 2023
disk partition linux-system