When your Seagate hard drive not working, it is usually about external hard disk not detected, not recognized, or not showing up. This article has the most comprehensive solutions to Seagate internal and external hard drive not working problems on both Windows and Mac. In the final part, you can learn how to recover data from a Seagate (external) hard drive which is not detecting by EaseUS hard drive recovery software.

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Is your Seagate external hard drive suddenly not working? This page explains the reasons why your Seagate and other brands of external hard drive not working, not detected, or not showing up, and the fixes to repair external hard disk without losing any data.

Seagate External Hard Drives For Mac

Follow the content navigation and pick up the right methods to make your Seagate external hard drive work again:

PAGE CONTENT:

Error: Seagate External Hard Drive Not Working
Why Is Seagate External Hard Drive Not Working/Detected
How to Fix Seagate External Hard Drive Not Working in Windows
How to Repair Seagate External Disk Not Working/Detected in Mac
Bonus Tip: Recover Data from Seagate Drive after Making It Work Again

Also applies to: Fix Seagate external hard drive not showing up, external hard drive not detected, Seagate external hard drive light blinking but not work, Seagate external hard drive not recognized Widows 10, USB not showing up, etc.

Error: Seagate External Hard Drive Not Working

'My 1TB Seagate external hard drive cannot be detected by my computer but the light is blinking, what can I do to fix this? I need to get my data back. I use it as a backup so pretty much all of my personal and work files are stored in the drive. Please help me out.'

Seagate external hard drive not working or not detected issue is top concerned among worldwide Seagate users. Normally, the external hard drive should be detected by the Operating System and viable for storing all types of files, without the need for drivers, software, or firmware updates.

However, each drive has its own issues after long-term use or possibly improper use. So the first step that you should take is to find out the reasons why your Seagate disk cannot be detected by a computer. Then, you can follow the presented solutions in the following parts to repair Seagate external hard disk not working issue without losing any data.

Let's start the journey and follow the tutorials below to make your Seagate, Toshiba, Sandisk, etc., external and internal hard drive work properly again.

Why Is Seagate External Hard Drive Not Working/Detected

Generally, 'Not Working' is a state that usually describes a malfunctioning hard disk or external hard drive. For example, you may define your Seagate external hard drive 'not working' as it's not accessible or detected after connecting it to your computer. Or, even you correctly connect it to a computer, it doesn't show up in the drives list in Windows or Mac computer.

So, what caused your external hard drive malfunctioning? Both software and hardware issues may cause a hard drive not working as usual. Here is a list of commonly explored reasons related to this issue:

Incompatible file system
File system corruption, Invalid file system, RAW
The drive turns to unallocated
Disk drive letter conflict
Hard drive driver is corrupted or out of date
The hard drive has too many bad sectors
The hard drive is damaged, dead, not spinning up

How to Fix Seagate External Hard Drive Not Working in Windows

Applies to: Troubleshoot Seagate external hard drive not working, not detected issue in Windows 10/8/7.

If you tried the above-presented hardware troubleshooting tips but the Seagate external hard drive is still not working, don't worry. You can 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. Try a Different USB Port, Connection Cables

Applies to: All types of storage devices that are not working, not showing up or detected in both Windows and Mac computers.

So how to repair Seagate hard drive that is not detected by the computer? Here is a list of basic hardware troubleshooting that you may first try to improve the chance of success in making the hard drive or external hard drive work again:

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. (No light could indicate 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.

If Seagate is detectable but inaccessible, jump to recover Seagate disk data first as presented at the end of this page. Then revert to this part to fix Seagate disk to workable again.

Fix 2. Format RAW Seagate External Hard Drive to NTFS

Applies to: Format RAW Seagate external hard drive, change invalid file system on Seagate disk to a supported one, like NTFS.

When a hard drive's file system turns to RAW, it won't show up in my computer. Also, if your Seagate external hard drive contains an unsupported file system, the drive won't be able to work normally on your computer.

In this page, You need to format the RAW drive to a file system that Windows recognizes, such as NTFS, FAT32 or exFAT.

Warning: Note that as formatting will cause data loss on your Seagate device, if you need the data, turn to reliable data recovery software before the formatting.; EaseUS Data Recovery Wizard with the tutorial as shown below is capable of recovering data from a RAW, not formatted or inaccessible Seagate HDD, external hard disk and USB flash drive, etc. with ease

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. Change Seagate Drive Letter

Applies to: Fix Seagate external hard drive not showing, detected, recognized issue due to drive letter conflict.

Note that, sometimes, if your external hard drive shares the same drive letter as your disk partition, Windows won't show the drive letter of your external device. It will show as New Volume in Disk Management without a drive letter.

And this is why your external hard drive not detected. To fix this issue, you'll need to add a new drive letter to your Seagate disk. Here are the steps:

Step 1. Connect Se

Seagate External Drives For Mac