Error Mapping a Drive

by Johannes Helmig [Published on 12 July 1998 / Last Updated on 12 July 1998]

You see the other system in your "Network Neighborhood", select a resource and now try to map it, and then:

When you get such (or a similar "Mapping") error message, have a look to your CONFIG.SYS, whether you have in there a "LASTDRIVE" statement:
You CANNOT use a drive-letter a drive within the range defined by LASTDRIVE !
Solution: either delete the LASTDRIVE-statement in your CONFIG.SYS (it is in most cases anyway a left-over from an upgrade from a DOS to a Win95 system and usually not anymore required)
Use a drive-letter ABOVE the LASTDRIVE range.

If you like more details on this issue, please look at the Microsoft Knowledge base article Q130077:

Are you trying to map your own disk-drive as a network drive ?

see Sharing and Mapping for the solution

See Also

The Author — Johannes Helmig

Dr.Johannes Helmig is working as Director, Technical Knowledge Management in the Belgium office of Gerber Technology where he is involved in Customer Service and internal training, with special interest in Networking.


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