Seagate External Hard Drive Detected But Not Accessible

There could be several reasons why your Seagate external hard drive is detected but not accessible when you plug it into your computer. For example, your Seagate external hard drive may include software bundles that are incompatible with the operating system. Under normal circumstances, the external hard drive will be detected by your operating system without any drivers, software, or firmware.To solve Seagate external hard drive detected but not accessible, try our basic troubleshooting procedure.


  • Change the cable.
  • Connect the drive to a different USB port.
  • Connect the drive to a different computer.
  • If you are using Desktop Drives, see if the drive status light is on.
  • Try to connect the Desktop drive to a different power source.
  • If you have connected the drive using a USB adapter, remove the adapter and connect the drive directly to the computer or use a different adapter.


Follow the given simple procedure to fix Seagate external hard drive detected but not accessible problem.

Verify Device Manager and Disk Management by following the steps below.

  • Press the Windows and R key.
  • Input compmgmt.msc in the Run dialog box.
  • Select Device Manager.
  • Check the Disk Drives section by double-clicking on it.
  • Search for your drive name to see if your drive is detected.
  • Right-click on your Seagate external hard drive listed under Disk Drives.
  • Click Properties --> Volumes --> Populate.
  • Note the disk number (Disk 1, Disk 2, etc.).
  • Click Disk Management. Here, you can view the drive’s health.
  • Locate the disk number you have noted earlier.
  • Check the status of the disk, RAW or Unallocated. This status indicates that there is a possibility of error with the drive’s formatting.
  • If the Seagate external hard drive is in either of those statuses and you have tried basic troubleshooting, then you should consider recovering your data.
  • In case you do not need any data on the drive, you can go ahead and reformat the drive. This may restore accessibility.

Note: In case your drive is formatted correctly, check the following things.NTFS – If this is missing, it signifies that the file system is corrupted. To fix this issue, you can format the drive.Capacity – The drive should show the correct storage space if your drive is healthy.Drive letter – Check if the drive has a drive letter. If not, right-click on the drive and choose the change the drive letter or path option. Click Add and then assign a letter and select OK.You must follow the above instructions if the Seagate external hard drive detected but not accessible. If you still can’t fix the issue, you can contact us for assistance.

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