Cant' Access USB External Drives

[eeg0323]

The 2 USB drives I have (one Maxtor One Touch and one WD external) worked
fine until last week when I upgraded to SP1. The drives show up in My
Computer and under Disk Management they show as Healthy (Active, Primary
Partition) with drive letters X and V. I show no errors under Device Manager.
When I double click on one of them from My Computer I get an error message
"Windows cannot access the specified device, path, or file. You may not have
the appropriate permission to access them". If I right click and try to Open
or Explore from there the drive opens just fine. The problem is that program
such as my backup program also cannot access the drives directly.
I have UAC turned off. I have set my user as the owner, and have Full
control.
Any ideas or suggestions would be greatly appreciated.

 

[Mark L. Ferguson]

Go to Start/Run, and type DEVMGMT.MSC , highlight the USB Root Hub devices,
Action menu, "Uninstall", (do Not put a check in 'delete driver") then
Action menu, "scan for hardware changes", to find the device drivers again
automatically.

 

[eeg0323]

Mark
Thanks for the quick response, but it did not help. I uninstalled the USB
root hub devices and when that did not help, uninstalled the USB Mass Storage
Devices which did not work either although I will say that they reinstalled
with the correct brand name and model.