+ Post New Thread
Results 1 to 5 of 5
Windows Thread, USB flash drives not being recognised in Technical; All teaching staff are allowed to use USB flash drives, kids not. Since last week all usb flash drives are ...
  1. #1

    Join Date
    Jan 2006
    Location
    Liverpool
    Posts
    84
    Thank Post
    30
    Thanked 13 Times in 12 Posts
    Rep Power
    20

    USB flash drives not being recognised

    All teaching staff are allowed to use USB flash drives, kids not. Since last week all usb flash drives are not being recognised, I am using usbdlm to map usb drives to an unused drive letter. When you insert the unrecognised drive you get a quick double beep in windows and drive will not appear. Weirdly if you put a usb that has not been in that machine before it will be recognised and the one that wasn't will then work fine Seems to be update related, but I can't see how, I say this because I've reimaged(XP and SP3)a machine and usb works fine, after updating windows and restarting the same thing happens

  2. #2

    Join Date
    May 2007
    Location
    Birmingham
    Posts
    21
    Thank Post
    8
    Thanked 3 Times in 3 Posts
    Rep Power
    16
    We are having the same problem as you have described.
    Have you managed to find a soloution for this.
    ---
    AM

  3. #3

    Join Date
    Jun 2007
    Location
    London
    Posts
    894
    Thank Post
    64
    Thanked 171 Times in 140 Posts
    Rep Power
    55
    Some U3 drives (e.g. Sandisk Cruzer) need to map to 2 drive letters - one (read-only) to the system files and another to the data. Could this be the cause of your problem?

  4. #4

    Join Date
    Jan 2006
    Location
    Liverpool
    Posts
    84
    Thank Post
    30
    Thanked 13 Times in 12 Posts
    Rep Power
    20
    Found the issue to be registry related - HKLM/system/currentcontrolset/system/usbstor - if start is set to 4 USB wont work needs to be 3. The only way around it I found was to push out a reg file in my start up scripts that changed that setting - so far so good, seems to be working Added this line to my start up script %systemroot%\regedit.exe /s %logonserver%\netlogon\usb.reg and exported a reg file (usb.reg) with the correct setting in it.

  5. #5

    m25man's Avatar
    Join Date
    Oct 2005
    Location
    Romford, Essex
    Posts
    1,637
    Thank Post
    49
    Thanked 463 Times in 338 Posts
    Rep Power
    140
    Also check HKLM\System\MountedDevices

    You will probably see a whole bunch like these,
    \??\Volume{1409910d-2af5-11de-a718-000000000000}
    \??\Volume{6f88d7e0-6079-11dd-9e89-000000000000}

    And These
    \DosDevices\C:
    \DosDevices\D:
    \DosDevices\E:

    Delete these keys and reboot the system, does this fix it?

    Everytime a USB stick get inserted it records the details here, if one of these gets broken it seems to stop the enumeration process.

SHARE:
+ Post New Thread

Similar Threads

  1. CD Drives not recognised
    By michael2k6 in forum Hardware
    Replies: 7
    Last Post: 23rd March 2009, 01:03 PM
  2. Replies: 3
    Last Post: 16th January 2009, 01:32 PM
  3. USB flash drives with encryption
    By Jobos in forum Hardware
    Replies: 5
    Last Post: 2nd May 2008, 09:46 AM
  4. Bootable USB Flash drives
    By spc-rocket in forum Hardware
    Replies: 30
    Last Post: 16th May 2007, 06:03 PM
  5. Allowing Users to use USB Flash Drives
    By Zoom7000 in forum Windows
    Replies: 29
    Last Post: 3rd April 2007, 08:26 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •