/LOCATION=device-name:[directory-name]

    Specifies the location of the product database files to be
    analyzed. Include only a device and directory name. This
    qualifier is useful if you copy the product database to a
    temporary directory to perform verification and repair on the
    copy rather than on the original files.

    If you do not use this qualifier, the default location of the
    product database files is SYS$SYSDEVICE:[VMS$COMMON.SYSEXE]. If
    you omit the device name, PCSI uses your current default device.
    If you omit the directory name, PCSI uses your current default
    directory.