Drive letter problems with flash drives

Sphere · Sep 30, 2006

OMG DUDE I LOVE YOU!!!!!!!!!!

Its back working, I appreciate everyone’s help Thank you for taking the time and helping

Bluemouse · Sep 30, 2006

Its back working, I appreciate everyone’s help Thank you for taking the time and helping

Ditto .

Swaine77 · Oct 9, 2006

Aiya! Careful with that registry!

Bluemouse said:

WAHAHAHAHA FIXED IT!

It had something to do with the registry, and nothing to do with the drivers at all.

**** EXPORT THE SELECTED FOLDERS BEFORE DOING THIS ****

1) Go into start -> run -> regedit -> hit ok

2) Navigate to:
[HKEY_LOCAL_MACHINE\SYSTEM\MountedDevice1]

3)file -> export (the mounteddevices1 folder)

4) delete all the dosdevices drives (ie \dosdevices\C

5) I cant remember if i did it to the "mountd devices" folder too, so dont do it at first but if it doesnt work then do it after

6) go to [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}]

7) Export this too

8) delete the upperfilter key

9) reboot and try plugging in your device.

This actually didnt work for me when i tried it, but then i tried plugging in my device an hour later and it worked flawlessly (all 3 flash drives)

Hope this helps! Your registry may be slightly different, but look in there, there are probably a bunch of keys that are screwing it up.

Cheers

I've got the same problem with my thumb drives not showing up in Windows Explorer so I was really excited when I saw your post. I saved the registry folders that you said to back up but after I destroyed my registry, XP wouldn't boot and I didn't know how to restore them. So I booted in safe mode and restored a Restore Point. That got the registry restored and XP booting again. I probably should have been more cautious but I deleted all the \??\Volume entries and a lot of the ones below those like (ie \dosdevices\C. I really hope I can figure out how to tailor your fix to my machine and get the auto-drive assignment working again.

Moral of the story: Don't delete registry entries unless you know EXACTLY what you're doing.

Iaddiso · Dec 11, 2007

I am working with someone that has a very similiar problem It started when a USB Hub was plugged in. The drive designator disappears from Windows Explorer and My Computer but is available in application such as Word & Excell when a file is opened or saved. After a reboot all looks normal, after a flash drive is removed one time the problem begins when the next flash drive inserted. Any adivce is appreciated. Thanks

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Drive letter problems with flash drives

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