Library /sys$common/syshlp/sysgen.hlb DEINSTALL, Qualifiers, /ALL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Deinstalls all page and swap files currently installed on the
    system. This command is most useful during an orderly system
    shutdown procedure where all disk volumes are being dismounted.

    No other parameters or qualifiers are allowed.