Windows

HMMM... seems simplistic but are you using the "Commit Changes now" option prior to closing the NT Disk admin?

Try this tip from JSI Inc: "Tip 1061 ? SCSI device does not retain drive letter assigned in Disk Administrator."

The link is: http://www.jsiinc.com/TIP1000/rh1061.htm

This sounds like a problem with your SCSI Controller drivers. Try downloading the newest version of both drivers (the one on yout mainboard as well as the external one) and installing those new drivers.

If answer 1 is not correct the nexr question is do you have any ide devices or is this system a CompaQ?

if so go to this microsoft article
article ID Q158362

if not is your termination all good? before and after all the hard drives?

We were solving similar problem with COMPAQ
ProLiant 2500. After we applied the proper SoftPaq {sorry, I do not remember the number} the problem was gone.