Writes disk geometry and other information to a disk attached to the target system.

Displays information about file system use such as total file system size, available space, inodes used and inodes available.

Checks the integrity of a UFS file system and attempts to fix any errors it finds.

Checks the integrity of an MS-DOS file system and attempts to fix any errors it finds.

Creates a special device driver file corresponding to a device attached to the C5 system.

Mounts a file system at a specified mount point in the existing file system hierarchy.

Writes a UFS file system structure to a labelled disk attached to the target system.

Writes an MS-DOS file system structure to a labelled disk attached to the target system.

Activates a local swap partition that you have mounted.

Removes a mounted file system from the file system hierarchy.