Windows 10: USB HDD Not Showing Up?

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  1.    06 Mar 2017 #1

    USB HDD Not Showing Up?

    Hey guys, I've got 4 external USB HDD's connected to my PC. 3 of them are working fine, however the 4th isn't showing up.

    It shows up when I right click the USB icon in the bottom right corner of my screen and its name is "My Book" but it doesn't have a drive letter like the other USB HDD's.

    Thank you for any help!
      My ComputerSystem Spec

  2.    06 Mar 2017 #2

    Go-to disk Management and give it a drive letter it should then show up
      My ComputerSystem Spec

  3.    06 Mar 2017 #3

    To add to what Samuria is saying, go to Start/Search and type diskmgmt.msc, Right click the diskmgmt results and Run As Administrator. In the Elevated Disk Management window, in the lower pane, find your My Book external HDD, Right click it and choose Change Drive Letter or Paths. Choose a drive letter not being used.
      My ComputerSystem Spec

  4.    31 Oct 2017 #4

    I had to put this USB hard drive away, but I'm going to try your idea now.

    By the way, if your idea doesn't work what else can I try?

      My ComputerSystem Spec

  5.    31 Oct 2017 #5

    I'm still unable to access this USB HDD.

    Does anyone have another idea?



    The USB HDD is plugged in, but it's not showing up in Disk Management...?
    Last edited by NiceAndShy; 31 Oct 2017 at 13:40.
      My ComputerSystem Spec

  6.    31 Oct 2017 #6

    You have to eliminate the usb, usbcable and usb interface and put it in the pc if that doesnt see it in the bios its dead
      My ComputerSystem Spec

  7. Posts : 628
    Windows 7 Ultimate 32bit
       31 Oct 2017 #7

    Have you checked it on another working PC?
      My ComputerSystem Spec

  8.    01 Nov 2017 #8

    Try this

    1. Open an admin Command Prompt window
    2. Enter DISKPART
    4. Enter EXIT

    The reboot, reconnect the drive and see if it is recognised.
      My ComputersSystem Spec

  9.    14 Nov 2017 #9

    Steve C said: View Post
    Try this

    1. Open an admin Command Prompt window
    2. Enter DISKPART
    4. Enter EXIT

    The reboot, reconnect the drive and see if it is recognised.
    Okay thanks, but could you explain what this will do and how it works?
      My ComputerSystem Spec

  10. Posts : 628
    Windows 7 Ultimate 32bit
       14 Nov 2017 #10

    automount Command : Enables or disables the automount feature. When enabled (the default), Windows automatically mounts the file system for a new basic or dynamic volume when it is added to the system, and then assigns a drive letter to the volume.

    As it says, by default automount is enabled in Windows.

    When none of your USB storage devices ( external HDDs, Flash drives) show up in Windows Disk Management (this can happen sometimes) , then we recommend to check whether automount got disabled - somehow. If disabled you have to enable it.

    ( If only one of your external storage device does not show up but others show up with drive letters, there is no need to check automount. That means there is a problem with that storage device. Just to confirm I wanted you to check it on another PC.)

    Actually Steve C should have recommended this:

    Start > All Programs > Accessories > Right click on Command Prompt and Run as administrator.
    diskpart [ENTER]
    Against the DISKPART prompt
    automount [ENTER]
    Does it say "automatic mounting of new volumes disabled " ? Then
    automount enable [ENTER]
    "automatic mounting of new volumes enabled"
    Close Command Window.
    If "automount" command says ""automatic mounting of new volumes enabled" then there is no need to give the "automount enable" command.

    Since you said that three of your external drives are working fine, the above exercise is redundant , but no harm. Sometimes redundancy does help.

    For more insight see this thread where it helped the OP: New Drives Plugged in New Notebook Need to Have Drive Letter Assigned
    Last edited by jumanji; 14 Nov 2017 at 08:33.
      My ComputerSystem Spec

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