UMOUNT(II) 8/5/73 UMOUNT(II) NAME umount - dismount file system SYNOPSIS (umount = 22.) sys umount; special DESCRIPTION Umount announces to the system that special file special is no longer to contain a removable file system. The file associated with the special file reverts to its ordinary interpretation (see mount ). SEE ALSO umount(I), mount(II) DIAGNOSTICS Error bit (c-bit) set if no file system was mounted on the special file or if there are still active files on the mounted file system.