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Thread: USB Mass Storage Device Not Recognized (XP)

  1. #91
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    Sep 2007
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    2

    Thumbs up Solution: Windows does not recognize USB Mass Storage

    Thanks for the above solutions guys! But they are not working!

    Luckily, I read at one of the post which says delete the INFCACHE.1 file from windows\inf folder.

    This has worked!!!

    I will post this solution on all the numerous posts I have looked upon!

    Problem:
    Windows XP does not recognize USB Mass Storage Devices
    Device is detected and listed with an exclaimation mark in Device Manager

    Solution:
    After spending hours on internet and reading through numerous posts, I found following solutions which will definately work:

    1. Delete following file: windows\inf\infcache.1

    2. Go to windows\inf folder and see if you have read/write permissions for following files:
    usbstor.inf
    usbstor.pnf
    If not, open security settings for above files and add your username for read/write access.

    3. Open registry editor and:
    Delete following keys:
    HKLM\System\CurrentControlSet\Enum\USB\ <read all keys and delete all those saying USB Mass Storage Driver>

    Add following key:
    HKLM\Local_Machine\CurrentControlSet\Services\Usb
    Add a new DWoRD Value and name it "DisableSelectiveSuspend". Give it value 1

    4. Make sure you have USBSTOR.SYS file in your windows\system32\drivers folder (It wasn't there in my case). Just Google using Usbstor.sys and you will find the file to download. Save it at above location.

    After doing above steps, restart your PC. Now Windows should recognize your mass storage and should do an autoplay.

    5. Some posts also mention that turning off the system and pulling out mains power supply and batteries for 30 mins is also helpful to resolve above problem.

    edited by admin: no contact info per minute on the forum, thank you

  2. #92
    Driver Terrier NooNoo's Avatar
    Join Date
    Dec 2000
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    UK
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    31,824
    Thanks for the info Prashant

    The Knowledge Base Article about DisableSelectiveSuspend.

    Deleting devices from the enum key is not recommended...

    Usbstor.sys should be expanded from the original XP disk and not downloaded - there may be virus problems or the wrong file version.
    Never, ever approach a computer saying or even thinking "I will just do this quickly."

  3. #93
    Registered User
    Join Date
    Oct 2007
    Posts
    1

    Solution to your problem - USB 2.0

    Hi,

    I almost gave up on that on.
    The solution is more simple then you can immagine.

    Just totaly disable the USB from the system's BIOS.
    Widown XP takes over on the next startup and then it works 100%.

    The problem is a VIA chipset related.

    Enjoy,
    Gadi k

    Let me know how it came out

  4. #94
    Registered User
    Join Date
    Oct 2007
    Posts
    1
    After reinstalling XP Pro, SP2 and all the updates out there, my system no longer recognized my WD external HD...more than a bit annoying since I reformatted my internal HD on purpose because I had backed all my files up to the external hd a day earlier, when it worked perfectly on my system.

    Anyway, searching the web brought me to this and other forums where people were having simillar problems with external mass storage devices, and as I just fixed my problem I thought I'd post what worked for me...

    I simply replaced the usbstor.sys file in Windows\system32\drivers from SP2 with an older version found here: http://www.usbman.com/WebDrivers/WinMe%20Sys%20Files/ , had my system scan again for the external hd and like magic, there it was...

    Good luck and I hope this helps someone out there, cause it's an annoying little problem...

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