Take a look to the SUBST MS-DOS command.

Vlad

>In my work, I'm frequently swapping hard drives in and out
>of the same PC, which has three "cold-swap" disk drawers
>that I installed. All drives run on the IDE subsystem, and
>a CD-ROM occupies the 4th IDE channel.
>
>What really causes problems for me is that Win95
>insists on assigning drive letters first to *all* primary
>partitions, no matter which drive they are on, then it
>starts assiging letters to logical drives within extended
>partitions.
>
>I need the flexibility to dynamically and quickly remap
>drive letters, because tomorrow I might be using two
>different disk drives in the computer!
>
>Has anybody seen a utility that will at boot time (preferably by
>using a simple config file) let me remap drive letters?
>
>The config file would conceptually look like:
>
>Drive 0, Partition 0 = C:
>Drive 0, Partition 1, Logical Partition 0 = D:
>Drive 1, Partition 0 = E:
>etc...
>
>Thanks!