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XP SP2 USB drives not mapped in explorer

Discussion in 'Windows XP' started by mikerader, Aug 28, 2007.

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  1. mikerader

    mikerader Thread Starter

    Aug 28, 2007
    I just changed my MoBo and then upgraded to Windows XP SP2. Everything is fine except My USB drives and Memory cards in the USB reader do not show up mapped in Explorer. They do show up in Computer Management. I can even assign drive letter there. But they will not show up in Eplorer even after I assign the drive letters.

    CD ROM and Hard disks all show up. Sandisk media player shows up too. But not USB drives. I have seen several threads with similar issues.

    I have tried the following.

    TweakUI, to see if drive letters are missing.
    I have asssigned letters to the USB drive and rebooted.
    I have checked for any mapped drives to a network device. I have no mapped drives.

    Is this a security thing with SP2??
    Any other suggestions?

    I can copy files back and forth by going through Manage from "My Computer" but not explorer.

    Thanks in Advance
  2. mikerader

    mikerader Thread Starter

    Aug 28, 2007
    By the way,

    After I map the drive from "Computer Management" I can access it from the command prompt with dir h: or whatever I map the USB drive as.

    It still does not show up in Explorer. I think this is an explorer issue only.
  3. ozrom1e


    May 15, 2006
    Welcome to TSG....

    When you install Windows XP Service Pack 2, the USB 2.0 drivers do not appear to update

    Removing and reinstalling the USB devices may be necessary, but I'd recommend following this procedure to ensure it is done thoroughly: Let's go for the "complete" USB driver renewal and see if that helps.
    Please print this article for Reference


    Create a file with NOTEPAD containing the following lines and save it as FIX.REG
    -------------------------- cut after this line --------------------------------
    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment]
    -------------------------- cut before this line --------------------------------
    Double click on FIX.REG and say yes to the Merge Into Registry question.
    Unplug ALL USB devices.
    Open Device Manager.
    View, Show Hidden Devices.
    Uninstall all devices under USB Controllers.
    Uninstall all devices under Disk Drives that you know are not present.
    Uninstall all devices under Storage Volumes. Say no to any reboot prompts until you are finished. Also, if a Storage Volume doesn't uninstall, ignore it and move to the next one.
    If you have a yellow ? with unknown devices, uninstall all of the entries there as well.
    When this is done, reboot TWICE.
    Reconnect the USB devices and see if they're recognized properly.
  4. mikerader

    mikerader Thread Starter

    Aug 28, 2007
    Thank you for the feedback. Believe it or not this was fixed when I installed Alcohol 120. It installed a driver first, I did not see the name of the driver but it said it was missing. After the reboot my usb drive had a letter assigned. Flash cards also now have a letter when I plug them into the card reader.

    This was a crazy one for me.

    Even after taking A120 off the everything still works.
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