-t vfstype
The argument following the -t is used to indicate the file system
type. The file system types which are currently supported are:
adfs, affs, autofs, coda, coherent, cramfs, devpts, efs, ext, ext2,
ext3, hfs, hpfs, iso9660, jfs, minix, msdos, ncpfs, nfs, ntfs,
proc, qnx4, ramfs, reiserfs, romfs, smbfs, sysv, tmpfs, udf, ufs,
umsdos, usbfs, vfat, xenix, xfs, xiafs. Note that coherent, sysv
and xenix are equivalent and that xenix and coherent will be
removed at some point in the future -- use sysv instead. Since ker-
nel version 2.1.21 the types ext and xiafs do not exist anymore.
Earlier, usbfs was known as usbdevfs.