Backup Plus 2tb Slim Portable Drive Not Detected

Due to several reasons, your external hard drive may not be detected when you connect it to your computer. The issue might be with your computer, Operating System, or the hard drive. This guide walks you through the troubleshooting solutions to fix the “Seagate backup plus 2TB Slim portable drive not detected” problem.


  • Check if the USB cable is firm enough at both ends. Disconnect the cable and reconnect it. In case it is damaged, replace it with a new one.
  • The problem might be with the USB port on your computer. So, try to connect your drive to a different port. If possible, connect your hard drive to another computer and check if your problem is resolved.
  • If you are using a USB adapter, remove it and connect your hard drive directly to your computer.
  • If none of these troubleshooting solutions fix your problem, proceed with the following section.


  • Open the Run box (Windows + R).
  • Type comptmgmt.msc and click OK.
  • When the Computer Management window appears, click on Device Manager.
  • Expand the Disk Drives option. Right-click on your Seagate external hard drive and select Properties.
  • Go to the Volume tab and click Populate. Now, take a note of the disk number of your hard drive.
  • Now, click on Disk Management on the left side.
  • On the screen that displays, locate the disk number of your external hard drive and check whether it shows RAW or Unallocated. Both these indicate a problem with your hard drive’s format.
  • In those instances, you need to format your external hard drive. Proceed with the following section to learn how to format your backup plus 2TB hard drive.
  • If your drive is correctly formatted, the issue might be with the drive letter.
  • If your external hard drive has the same drive letter as other existing hard drives, you need to assign a different drive letter. To do that, right-click on your drive and select the Change drive letter or paths option.
  • Seagate Backup Plus 2tb Slim Portable Drive Not Detected
  • Click Add, assign a different letter, and click OK.

Continue redaing the below section to fix backup plus 2tb slim portable drive not detected issue.


  • Open the Run dialog box.
  • Type diskmgmt.msc and click OK.
  • Backup Plus 2tb Slim Portable Drive Not Detected
  • When directed to the Disk Management section, right-click on your Backup Plus and select the Format option.
  • In the Format dialog box, enter a name for your hard drive in the Volume label field. Specify your preferred file system in the File system field.
  • Volume Label Field
  • Choose NTFS to use your storage device exclusively on Windows computers. In case you want to use your hard drive on Windows and Mac computers, select the exFAT file system.
  • Leave the Allocation unit size option as default and click the OK button.
  • Once the formatting process gets completed, check if your computer detects the Seagate Backup Plus 2TB slim portable drive.

If you still cannot rectify the Backup Plus 2tb slim portable drive not detected problem, you can reach our technical experts for assistance.

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