Windows 8 - Drive letter Not available in Disk Management

Issue - we have a system here that was configured to store the OS, Programs on SSD drive C: and the user data on RAID1 E: -- this has been working perfectly.  Until now when one of the RAID drives failed.  After replacing the drive, the Windows 8 OS assigns the drive letter F: to this RAID1 volume.  Since Win 8 expects to find the profiles, etc. on drive E: the system will only boot in Safe Mode.

From Disk Management the drive letter E: is not available so we can't change F: to E: - drive letter E: is not in use anywhere else and we have never used virtual drives on this unit.

The commands  -  Net Use E:/d    and   Mountvol E:/d  -  did not resolve the problem.  Neither did editing the Registry  \DosDevices\E:

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Have you rebooted the server in order to reclaim the drive letter ?

Also please be sure you are not using the drive letter on any other drives eg. CD ROM or some ISO that might be mounted using software.

Explore your computer, if E is assigned to anything please change the letter assigned to that drive in Computer management or dismount the ISO and proceed to update the drive letter assignment as needed.
PBTechPartnersAuthor Commented:
Yes we have rebooted and drive E: is not used anywhere else (logically or virtually)

UPDATE:   We have been able to get the proper drive assigned to E: by editing the Registry - we changed (Renamed)    \DosDevices\E:  to \DosDevices\L: (an unused letter) and then Renaming \DosDevices\F: to \DosDevices\E:  then  Renaming \DosDevices\L: to \DosDevices\F:   Confused yet?

Booting back up now -- will post additional info as it becomes available.
This is also known there is a technet article on this.

It would however make sense to be able to identify the reason why you could not reclaim the drive letter.
PBTechPartnersAuthor Commented:
We have used our time resources up now.   We're reformatting and reinstalling.

Thank you all for your efforts.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
PBTechPartnersAuthor Commented:
We are abandoning the effort
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows OS

From novice to tech pro — start learning today.