USB Flash Drive - Disk not formatted error

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Guest

Windows XP is having a problem with USB flash drives on my system. When I
plug them in they are assigned a drive letter, but if I try to open them up I
get a "disk not formatted" error.

I've spent hours working on this but am getting nowhere. I know the USB
devices are working, and I know my USB ports are good.

- This error occurs on every USB device which is accessed as a folder (have
tried several flash drives from several manufacturers)
- The drives work fine on other XP systems
- Other USB devices, like GPS, Webcam, digital camera, printer, work fine

I've gone into the control panel and have uninstalled all the USB drivers
multiple times, rebooted, and let them reinstall. Same problem.

Windows recognizes the device and size correctly when I view the properties.
If I attempt to format the drive, I just get an error: The format did not
complete successfully.

Anyone have any clues to what might be going on?? Thanks for any pointers.
 
Windows XP is having a problem with USB flash drives on my system.
When I plug them in they are assigned a drive letter, but if I
try to open them up I get a "disk not formatted" error.

I've spent hours working on this but am getting nowhere. I know
the USB devices are working, and I know my USB ports are good.

- This error occurs on every USB device which is accessed as a
folder (have tried several flash drives from several
manufacturers) - The drives work fine on other XP systems
- Other USB devices, like GPS, Webcam, digital camera, printer,
work fine

I've gone into the control panel and have uninstalled all the USB
drivers multiple times, rebooted, and let them reinstall. Same
problem.

Windows recognizes the device and size correctly when I view the
properties.
If I attempt to format the drive, I just get an error: The
format did not
complete successfully.

Anyone have any clues to what might be going on?? Thanks for any
pointers.
Click to expand...

As a despiration measure, you might try dragging the file:
C:\Windows\inf\INFCACHE.1
into the trash (don't empty trash just in case), and reboot.
Note that the "inf" directory is a hidden directory.
This should force a fresh reload of the driver.

HTH,
John
 
As a despiration measure, you might try dragging the file:
C:\Windows\inf\INFCACHE.1
into the trash (don't empty trash just in case), and reboot.
Note that the "inf" directory is a hidden directory.
This should force a fresh reload of the driver.

HTH,
John
Click to expand...

Thanks. Unfortunately that's one of the things I tried and it didn't seem
to solve the problem. In another newsgroup someone mentioned deleting this
file, plus removing some entries in the registry under the
HKLM\System\CurrentControlSet\Enum\USB\ branch which point to USB Mass
Storage device drivers.

I was able to delete the file, but I wasn't able to remove those entries in
the registry. It looked like they were locked somehow.

Bill
 
Thanks. Unfortunately that's one of the things I tried and it
didn't seem to solve the problem. In another newsgroup someone
mentioned deleting this file, plus removing some entries in the
registry under the HKLM\System\CurrentControlSet\Enum\USB\ branch
which point to USB Mass Storage device drivers.

I was able to delete the file, but I wasn't able to remove those
entries in the registry. It looked like they were locked somehow.

Bill
Click to expand...

Strange. I had no problem deleting the registry entries on my machine.
As Administrator, try right-clicking on one of the folders in Regedit,
then select "Permissions" to see if you have a permissions problem.

-- John
 
Strange. I had no problem deleting the registry entries on my machine.
As Administrator, try right-clicking on one of the folders in Regedit,
then select "Permissions" to see if you have a permissions problem.

-- John
Click to expand...

I learn something new every day. I didn't realize you could right click and
get the permissions, but that was the problem with the registry. I set the
permissions and deleted the keys, but after a reboot and reconfigure of the
USB ports, I still have the same problem.

Bill
 
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