Forum Home
Press F1
 
Thread ID: 99480 2009-05-03 20:43:00 Pen usb drive mounting but not showing woc (13210) Press F1
Post ID Timestamp Content User
770718 2009-05-03 20:43:00 Hi, I have a problem with a pen drive not showing up in Windows .

System: Windows XP media
Computer NEC Laptop .

There is no hardware issue . I have tested the computer and drives out using Linux and they work fine . So this is a software issue with Windows .

Computer had Malware on it that has been cleaned .

System has had a sfc scan and is OK .

OK so this is the problem .

Insert drive into usb it is recognized by the system and appears to mount OK

It is not showing up as a drive on my computer . (Refresh does not help)
When I go into Computer / managed and check out the drive management .
(Thought it may be a drive allocation fault) there is are no drives showing up .
This would appear that there is a fault with windows disk management .

I have had a look at the services and they appear OK also had a quick look at group policies and could not find a problem although I would not guarantee that I have not overlooked something in either of the above .

I have googled the problem but have not yet found an answer although I have found others with the same fault .

Can anyone shed some light on the solution or point me in the right direction .
woc (13210)
770719 2009-05-03 20:56:00 Had a similar problem and it was the hub at fault.What happens if you inset straight in to a usb port. kjaada (253)
770720 2009-05-03 21:03:00 The drive is going direct into the USB port, So it is not a hub issue.
Thanks for the tip through.
woc (13210)
770721 2009-05-03 21:06:00 Have you tried a different usb device in the same port ?In my case another drive worked in the same hub port. kjaada (253)
770722 2009-05-03 22:04:00 Go into device manager>right click your USB device>Uninstall.

Reboot.
Blam (54)
770723 2009-05-04 01:46:00 Uninstall USB but it has made no difference.
As explained before when I go into Disk management there is no C: drive or USB drives. Only the CD Drive.
The usb is being mounted. Ie when it is plugged in it is seen by the system and device manager then installs it as a USB storage device along with the hard drive but neither show up in disk management.
It would appear that the system is not able to run the software needed for storage display. It is not allocating it a drive letter.
woc (13210)
770724 2009-05-04 01:55:00 Possibly a conflicting drive letter.

try the solution posted here:
techrepublic.com.com

Blam
Blam (54)
770725 2009-05-04 06:43:00 Has the USB ever worked on this Laptop?

Got a customers PC here at the moment, doing much the same thing - my older USB drives work OK, but any of the newer ones do the same thing, look/sound to load but wont show - it appears the ports dont have the power to run the newer USB Drives.

Plugged in a external powered USB drive into the same ports and that reads perfectly.
wainuitech (129)
770726 2009-05-04 18:07:00 I just tried mine again (which was an older external usb hub powered through the port) I put my wireless card in and it was ok but when I plugged my pendrive in as well the light on the hub went way down and it stopped working. kjaada (253)
770727 2009-05-04 20:32:00 I think the problem relates to the disk management system. And is virus related.
I have a couple of promising leads that I will try when I get into work.
It is software related because the hardware is working fine. ( Booted up computer using a Linux CD ant tested it ).
woc (13210)
1