FSTAB(5) Linux Programmers Manual FSTAB(5)
fstab - static information about the filesystems
The file fstab contains descriptive information about the various file
systems. fstab is only read by programs, and not written; it is the
duty of the system administrator to properly create and maintain this
file. Each filesystem is described on a separate line; fields on each
line are separated by tabs or spaces. Lines starting with # are com
ments. The order of records in fstab is important because fsck(8),
mount(8), and umount(8) sequentially iterate through fstab doing their
The first field, (fs_spec), describes the block special device or
remote filesystem to be mounted.
For ordinary mounts it will hold (a link to) a block special device
node (as created by mknod(8)) for the device to be mounted, like
/dev/cdrom or /dev/sdb7. For NFS mounts one will have
:, e.g., knuth.aeb.nl:/. For procfs, use proc.
Instead of giving the device explicitly, one may indicate the (ext2 or
xfs) filesystem that is to be mounted by its UUID or volume label (cf.
e2label(8) or xfs_admin(8)), writing LABEL=