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Hi I have an external hard drive which for some reason is no longer showing up on my pc It doesnt show in device manager either. Actually they are 3 external MAXTOR hard drives that have the same problem. Can u please tell me how to fix this is as I have very important data on there which needs to be recovered. New update: The external hard drive as shown up however it is saying in disk management that it is unknown and unreadable.

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  • midnightstud Jan 06, 2009

    how do I go about deleting the upper and lower filters in regedit

  • midnightstud Jan 06, 2009

    markrobin743

    I tried running chkdsk in command prompt but I still have the same problem it wont read the disk.

  • midnightstud Jan 06, 2009

    Hello are you there? We have tried everything but nothing. Any other suggestions?

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This is usually a corrupt partition table on the drive (since the drive is there but unreadable)
you'll need to get to a command prompt
change to the drive in question eg e drive or f drive (whichever your external drive shows up as)
type in
chkdsk /p

the system should then check the drive and fix any partition table problems....you should then be able to access the data on the drive...let me know what happens

Posted on Jan 06, 2009

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Try deleting upper and lower filters in regedit (Registry Editor). See if this helps.

Also make sure that other USB devices can be read on your system.

Double check BIOS settings as well and try to reload default settings. (Make sure USB is on)

Posted on Jan 06, 2009

  • Anna Marie Abueva Jan 06, 2009

    HI! Do you have any other cables for your external hdd? We can start by doing so to isolate issue. Or better yet, if you have another pc, try hooking it up there or from a friend's pc. Anyway, it's external. If it's detected there, issue is on settings/configuration of pc and not the hardware, could be the OS as well.



    But, if it is hardware, it could be the USB cable connection only, or worst, the hdd itself... =(

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Hi
first you chake the jhumper settng in your available hard drive. make sure the jhumper are diffrent way attached in all three hard drive. for e.g. :::i , ::i: , :i::: . in that way you will arrange your jhumper in hard drive.
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