This is copied from the HELP FILES on my pc. You can also read YOUR help
files for info on many problems.
To assign, change, or remove a drive letter
Using the Windows interface
1.. Open Computer Management (Local).
2.. In the console tree, click Disk Management.
Where?
a.. Computer Management (Local)
b.. Storage
c.. Disk Management
3.. Right-click a partition, logical drive, or volume, and then click
Change Drive Letter and Paths.
4.. Do one of the following:
a.. To assign a drive letter, click Add, click the drive letter you want
to use, and then click OK.
b.. To modify a drive letter, click it, click Change, click the drive
letter you want to use, and then click OK.
c.. To remove a drive letter, click it, and then click Remove.
Important
a.. Be careful when making drive-letter assignments because many MS-DOS
and Windows programs make references to a specific drive letter. For
example, the path environment variable shows specific drive letters in
conjunction with program names.
Notes
a.. To open Computer Management, click Start, and then click Control
Panel. Click Performance and Maintenance, click Administrative Tools, and
then double-click Computer Management.
b.. You must be logged on as a computer administrator in order to complete
this procedure.
c.. A computer can use up to 26 drive letters. Drive letters A and B are
reserved for floppy disk drives, but you can assign these letters to
removable drives if the computer does not have a floppy disk drive. Hard
disk drives in the computer receive letters C through Z, while mapped
network drives are assigned drive letters in reverse order (Z through B).
d.. You cannot change the drive letter of the system volume or boot
volume.
e.. An error message may appear when you attempt to assign a letter to a
volume, CD-ROM drive, or other removable media device, possibly because it
is in use by a program in the system. If this happens, close the program
accessing the volume or drive, and then click the Change Drive Letter and
Paths command again.
f.. Windows 2000 and Windows XP allow the static assignment of drive
letters on volumes, partitions, and CD-ROM drives. This means that you
permanently assign a drive letter to a specific partition, volume, or CD-ROM
drive. When you add a new hard disk to an existing computer system, it will
not affect statically assigned drive letters.
g.. You can also mount a local drive at an empty folder on an NTFS volume
using a drive path instead of a drive letter. For