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Is your Seagate external hard drive not working? This page covers complete solutions to fix Seagate and other brands of external hard drive not working, not detected, or not showing up error, making your hard drives work again without losing any data.

Quick Tips to Fix Problematic Seagate External Disk:

1. Try a different USB port on the computer.
2. Switch a new cable if the current one is damaged.
3. Try connecting the drive to a different computer.
4. Verify if the drive's light is on. (Light off indicates the power adapter is not connected to power.)
5. Try a different power outlet. (Desktop Drives)

After following these tips, if your Seagate external hard drive is still not detected, move on and try the other solutions offered here.

Applies to: Fix Seagate external hard drive not showing up, not detected, external hard drive light blinking but not work, not recognized in Windows 10, USB not showing up, etc.

8 Ways to Fix Seagate External Hard Drive Not Working in Windows & Mac

Follow to pick the right method and follow to make your Seagate external hard drive work again.

#1. Uninstall/Re-install Seagate Drive Driver...Full steps

#2. Format RAW Seagate Hard Drive...Full steps

#3. Create New Partition on Unallocated Seagate...Full steps

#4. Change Seagate Drive Letter...Full steps

#5. Turn on USB Root Hub...Full steps

#1. Repair Seagate External Drive in First Aid...Full steps

#2. Format Seagate to macOS Supported Format...Full steps

#3. Remount/Reformat Seagate External...Full steps

As some of these solutions may cause file loss issues, in this case, we'd like to recommend you restore data from the not working Seagate external hard drive first.

Before You Start: Recover Data after Not Working Seagate External Drive First

Here reliable hard drive data recovery software - EaseUS Data Recovery Wizard with its reliable features can bring all your lost files back immediately.

For a Mac user, download the Mac version to restore lost files.

EaseUS Data Recovery Wizard

Recover lost or deleted files, documents, photos, audio, music, emails effectively.
Recover files from formatted hard drive, emptied recycle bin, memory card, flash drive, digital camera, etc.
Support data recovery for sudden deletion, formatting, drive corruption, virus attack, system crash, etc.

Step 1. Locate Seagate drive to scan

Use the correct USB cable to connect the Seagate external hard drive to your Windows PC.
Run EaseUS Data Recovery Wizard, it will load the external drive and display it under the Devices section.
All you need to do here is to select the Seagate external hard drive and then click the Scan button.

Step 2. Check for the scan results

As soon as the scan process starts, the software will find more and more lost data on the selected drive and display the data in the scan results. You can find the desired files by following its original path from the leftside tree-view pane, or filter a specific file type like Pictures, Word/Excel/PDF documents, videos, etc.

Step 3. Preview and recover

A double-click on a file lets you preview its content. If the preview is with no problem, just select the target files and click Recover. To avoid data overwriting, we suggest you save the recovered data to the other drive instead of the original Seagate drive.

To recover Seagate external hard drive data on Mac, follow this link External Hard Drive Data Recovery on Mac for help.

How to Fix Seagate External Hard Drive Not Working in Windows

Now please first open disk management to check the state of your external hard drive and refer to the right solutions as presented below for help:

Fix 1. Uninstall and Re-install Seagate Hard Drive Driver

Risky Level: Low

Difficulty Level: Easy

If your hard drive is not detected on either the device manager or the disk management, you just need to uninstall and update the Seagate drive driver and try again. Here are the detailed steps.

Step 1. Connect the not working Seagate external hard disk to PC.

Step 2. Type device manager in the search box and click 'Device Manager' on the menu.

Step 3. Expand disk drivers and right-click on your external hard drive, select 'Update Driver'.

Step 4. Select 'Search automatically for updated driver software' and restart the PC when the process completes.

Fix 2. Format RAW Seagate External Hard Drive to NTFS

Risky Level: High. Data may get lost after formatting.

Difficulty Level: Easy

Warning: Note that formatting will cause DATA LOSS on your hard drive, if you need the data, then data recovery is necessary.

On the device manager or the disk management on your computer, if your external hard drive shows as RAW or Unallocated, it means you need to format your hard drive.

Step 1. Connect the Seagate external hard drive to your PC and open Disk Management.

Step 2. Right-click on the not working RAW drive and select 'Format'.

Step 3. Set volume label, set NTFS as the file system, and tick 'Quick Format'. Click 'OK' to start the formatting.

Fix 3. Restore Partition or Create a New Partition on Unallocated Seagate External Disk

Risky Level: Medium, data may get overwritten by creating a new partition.

Difficulty Level: Easy

When your external hard drive shows as unallocated in Disk Management, you have two options: 1. To restore the partition; 2. To create a new partition.

#1. Restore Lost Partition and Data from Seagate Unallocated Space

Your first choice is to directly apply the partition recovery software for help. It will scan and recover all lost partition and data from the unallocated space.

Step 1: Run EaseUS Partition Recovery on your PC.

Select the disk or device where you lost partition(s), click 'Scan' to continue.

Seagate 1tb External Hard Drive Problems

Step 2: Wait for the scanning process to complete.

Let the program scan the selected disk and find the lost partition(s).

Step 3: Preview and restore the lost partition(s).

Double-click on the partition which is marked as 'Lost' with 'Good' recoverability.

Preview the content of the lost partition. Click 'OK' and click 'Proceed' to start restoring the lost partition.

Step 4: Click 'Recover Now' to finish the partition recovery process.

Note: If the program warns you that there is a conflict, back up the listed partition with essential data to an external hard drive first. Then execute the final operation to restore your lost partition.

#2. Create a New Partition on Unallocated Seagate External Di