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  1. #1
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    Default External drive not recognised

    Win 10 setup on desk top. PC recognises most of my external drives but not two. Device manager sees them and says they are working properly but they do not show on the pc screen so I can not open them.
    What can I do?

  2. #2
    Computer Technician wainuitech's Avatar
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    Default Re: External drive not recognised

    1st check its got a drive letter.

    In Search type in Disk Management - Select "Create and format hard disk partitions"

    Click image for larger version. 

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    Locate the External Drive, if it doesn't show a Drive letter, right click the Drive - Change Drive letter and Drives - Give a Letter - Save.

    Should now show if this was the problem.

  3. #3
    Senior Member 1101's Avatar
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    Default Re: External drive not recognised

    Quote Originally Posted by Krad View Post
    Win 10 setup on desk top. PC recognises most of my external drives but not two. Device manager sees them and says they are working properly but they do not show on the pc screen so I can not open them.
    What can I do?
    more info needed
    USB Hard drive, USB stick ?
    Are any Mac or Linux formatted
    how old , when last used .
    Powered USB drive ? if so is the power pack OK ?
    Are they spinning up OK ? Any strange noises (put you ear against it )
    could be as simple as a bad or too long cable .

    Do you need the data on them
    It often means they have some sort of fault , or have not been formatted (win compatible formatted)
    If you need the data , then its a data recovery process

    If you dont need the data, diskpart, clean , initialise & format
    run a HD test program across them (WD has one thats easy to use)

  4. #4
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    Default Re: External drive not recognised

    The powered external hard drives both work on my laptop and another pc. The problem is with my pc.

  5. #5
    Computer Technician wainuitech's Avatar
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    Default Re: External drive not recognised

    Quote Originally Posted by Krad View Post
    The powered external hard drives both work on my laptop and another pc. The problem is with my pc.
    Are they showing drive letters like I suggested you look at ?

    "IF" for some reason there's not a drive letter assigned automatically they will show as you described but wont show normally.

  6. #6
    Computer Technician wainuitech's Avatar
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    Default Re: External drive not recognised

    If the Drive letters are not assigning heres some suggestions on fixing it.

    https://answers.microsoft.com/en-us/...7-37eb2da48a47

    Had this EXACT problem last week, plug in a USB drive makes all the connection noises, showed in Device manager but that was the only place. If the Computer was rebooted while the external was already plugged in worked fine.
    Last edited by wainuitech; 13-04-2021 at 06:20 PM.

  7. #7
    Computer Technician wainuitech's Avatar
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    Default Re: External drive not recognised

    If there are no drive letters --- The above link seems to be a bit unstable. So here is what it suggests
    Method 2: Auto mount.

    Tap on the Windows key on your keyboard.

    Type: command prompt

    In the search results list, right-click Command Prompt, and then click Run as Administrator.

    When you are prompted by User Account Control, click Continue.

    Type the following commands.

    Diskpart

    Automount (This command will tell you, if it is enabled or disabled.)

    Automount enable

    Automount scrub (If automount is already enabled, type this command to clear the saved associations of system drive letters.)

    Lastly type: Exit

    Restart the computer and plug in the USB now to check external USB drives.
    Then again it could be something completely different on the PC, but pay to check the basics first.
    Last edited by wainuitech; 14-04-2021 at 08:41 AM.

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