unable to read external hard drive

By richard forsey
Apr 24, 2007
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  1. Unable to read my usb maxtor external hard drive. running win xp pro. also unable to read some usb flash drives. drive does not read in disk man.
    tryed uninstalling all usb devices in device manage.

    any thoughts?
  2. it's me

    it's me Newcomer, in training

    What exactly happens when you plug your hard drive in the USB? Is it picked up by the computer?
  3. CCT

    CCT Newcomer, in training Posts: 3,556

    Did this drive work on that comp previously?

    Have you done anything recently to affect the bios?

    Does the external have an additional power adapter/dongle?

    Many questions, little info.

    :)
  4. richard forsey

    richard forsey Newcomer, in training Topic Starter

    the computer does not read the ext drive at all when pluged into the usb port.
    I tryed all of them. i recently had a power supply go had to reinstall hardware.
  5. raybay

    raybay TechSpot Evangelist Posts: 10,716   +6

    Try in another machine. If it doesn't work there, the drive is damaged from lateral impact, or is defective.
  6. CCT

    CCT Newcomer, in training Posts: 3,556

    In device manager, you should see an 'enhanced' entry under usb's. Is it there?

    Have you checked in bios that USB/USB 2.0 is enabled?

    Are you using rear USB (many comps have 1.1 on front panels).
  7. NetCablesPlus

    NetCablesPlus TechSpot Maniac Posts: 480

    You should also be sure that you are using a known good USB cable for your testing.
  8. richard forsey

    richard forsey Newcomer, in training Topic Starter

    usb hard drive was tested and was picked up fine on other comp. i was unable to find and usb setting in the bios. the drive is pluged in the back usb 2.0
    I am also having problems with some thumb drives not being picked up. they do work in other comp. they were working just recently.
    cct- what do you meen by a enhanced entry under usb.
  9. raybay

    raybay TechSpot Evangelist Posts: 10,716   +6

    Sounds like a trip to the shop is necessary... or at least a complete format and reinstall. You know the drive is good. You know it doesn't work in that computer. There are no tricks to making it work.
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