With the program DISK, the MOUNT command can be performed in a safe way. Input is as follows: DISK filnam[/R][,asn][=n][/F][/W] with: filnam : name of the file to be MOUNTed /R : perform MOUNT/NOWRITE asn : logical name for the assignment, done by the MOUNT command, when not specified, JM: ("Just Mounted") is used. n : the LD unit number, when not specified, DISK searches for a free number or displays an error message when all units are occupied. When specified, LDn is used if it is free, and when it is not free, action depends on the /F or /W switches. /F : give a FATAL error message when LDn is not free. /W : give a WARNING when LDn is not free and execute the MOUNT command. When both /F and /W are not given, a confirmation is asked when LDn is not free.