Purpose:Associate a path with a drive letter


Format:PSUBST [drive1: [path]]

PSUBST /D drive1:

PSUBST /P drive1:  [path]


/=Display the PSUBST command dialog.
drive1:Specifies a virtual drive to which you want to assign a path.
pathSpecifies a path you want to assign to a virtual drive (no trailing backslash).


/DDeletes a substituted (virtual) drive.
/PMake a new or existing virtual drive persistent.




PSUBST works like the Windows SUBST command, but the drive substitution is persistent (i.e., when the machine is restarted).


PSUBST with no parameters will display a list of the current virtual drives. If a drive is persistent, it will be prefixed with a *.


Because PSUBST needs to write to the HKLM registry hive, PSUBST must be run in an elevated TCC session.