/etc/fstab

• /etc/fstab
• fstab file can be used to define how disk partitions, various other block devices, or remote filesystems should be mounted into the filesystem
• These definitions will be converted into systemd mount units dynamically at boot

# <device>                                      <dir>                   <type>  <options>               <dump>  <fsck>

# /dev/sdb3 - arch
UUID=2740a3e6-85af-4d4a-bf60-242614758599       /                       ext4    rw,relatime             0       1

# /dev/sdc - swap
UUID=be520a04-5f31-46cb-a881-29a86a1133fe       none                    swap    defaults                0       0

# /dev/sda1 - moon
#UUID=4093109d-4077-422e-a87b-fb837e63de6f      /media/hvitoi/moon      ext4    defaults,noauto         0       2

genfstab

• genfstab is a util to generate the fstab avaialble at the package arch-install-scripts

genfstab -U "/mnt" >> "/mnt/etc/fstab" # by UUID
genfstab -L "/mnt" >> "/mnt/etc/fstab" # by label

Persistent Block Device Naming

• https://wiki.archlinux.org/title/Persistent_block_device_naming

• UUID

• Filesystem identifier
• Can be set with filesystem-specific tools (e.g., e2label, xfs_admin, fatlabel)
• LABEL
• Filesystem label
• Can be set with filesystem-specific tools (e.g., e2label, xfs_admin, fatlabel)
• PARTUUID (GUID only)
• Partition identifier
• Available GPT disks
• Can be set using gdisk
• PARTLABEL (GUID only)
• Partition label
• Available GPT disks
• Can be set using gdisk (max 72 characters long)
• Partition labels are defined in the header of the partition entry on GPT disks