Many users have encountered the issue that their Seagate external hard drive is not working or not detecting, either with the light blinking or not. If you are troubled by the very same issue, you will get the most potential solutions here. The way to recover data from your external hard drive with EaseUS Data Recovery Wizard is also provided in case you need.
Summary
The Backup Plus Slim (STHN1000402) is available in 1TB and 2TB models, in a light blue, black or brushed aluminum finish. Amazon lists these drives for $60 and $80 respectively. Image credit. Jan 16, 2020 Seagate Dashboard and Toolkit are designed to back up your important files to Seagate Backup Plus drive. If you prepare another hard disk from other brands, these two tools don’t support. Besides, both of them require you to register before backup. In short, the built-in Seagate backup plus software is not flexible and powerful.
This page's solutions are divided into two parts: the Seagate external hard drive light is blinking but not working/detecting and the light is not blinking. Directly jump to the part according to your own situation to get fixes:
Part 1. Seagate External Hard Drive Light Blinking But Not WorkingSeagate Backup Plus Slim Itb Mac Software Free
It's no longer a new case that storage devices such as USB drive or external hard drive suddenly become undetectable by PC due to unknown reasons. Seagate external hard drive light is blinking but not working or detecting on PC is one of the problems, which is still a troublesome case for many users. The issue of 'Seagate external hard drive light blinking but not detecting' may result from the problems on the hard drive itself or from other non-device errors. To help you fix the matter, we will present you with six effective methods to repair and fix Seagate external hard drive not working error.
Never mind trying the three quick fixes first since minor issues can also result in a problematic external hard drive.
Fix 1. Change USB Port and Reboot PC
Quite often, the Seagate external hard disk light blinking but not being detected issue can be easily fixed by simply changing the USB port and rebooting the computer. To do this, disconnect your external hard drive from the computer. Now turn off the PC for at least 1 minute. Then reconnect the external hard drive via another USB port and turn on the computer. You can also connect the device to another computer if possible to have a try.
Fix 2. Turn On USB Root Hub
Connect your Seagate external hard drive to your PC and the start the following process:
Step 1. Click'Start' and type devmgmt.msc.
Step 2. Open 'Device Manager' and expand 'Universal Serial Bus controllers'.
Step 3. Right-click 'USB Root Hub', click 'Properties', and then select 'Power Management'.
Step 4. Uncheck 'Allow the computer to turn off this device to save power'.
Step 5. Repeat this process for each USB Root Hub in the list and reboot PC.
After this, you should be able to see if Seagate external hard drive is detected by your PC then.
Fix 3. Clean Up Virus
If your computer or Seagate external hard drive is infected by a virus, it may cause the drive not detectable or unreadable. In this case, the best solution for this issue is to use virus cleaning software to wipe out and clean up the virus on your drive and PC. Then you can reboot PC and retry to access the Seagate external hard drive.
If these simple tips fail to help you solve the issue 'Seagate external hard drive light blinking but not working', don't get frustrated. There are three more advanced solutions for you to apply.
Fix 4. Make Seagate External Hard Drive Show Up in PC by Showing All Hidden Devices
Step 1. Click on 'Start', type devmgmt.msc, and select 'Device Manager'.
Step 2. Click 'View' in the menu bar, then select 'Show hidden devices'.
Step 3. Expand all notes by clicking onthe '+' icon.
Step 4. If there are any greyed entries, right-click on it and select 'Uninstall'.
Step 5. Reboot your computer and try again.
Fix 5. Update Hard Drive Driver to Fix Seagate External Hard Drive Not Detecting Error
Step 1. Click on 'Start' and type devmgmt.msc to open 'Device Manager'.
Step 2. Expand'Disk drives', right-click your Seagate external hard drive and select 'Undate driver'.
Step 3. Then check out whether any device shows up as unrecognized or not.
Fix 6. Delete Registry Key to Make Seagate External Hard Drive Detected and Work
Note that any false operation using Registry Editor may result in serious problems. You should be highly careful while following the steps here to delete a Registry key so to make the Seagate external hard drive detected and work again.
Step 1. Click on'Start', type regedt32 and click 'regedt32' to run 'Registry Editor'.
Step 2. Back up your registry by going to 'File' and click 'Export'.
Save the registry keys on your computer.
Step 3. Go to: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E967-E325-11CE-BFC1-08002BE10318};
Seagate Backup Plus Slim User Manual
Step 4. If you see any 'UpperFilter' or 'LowerFilters' on the right side, right-click to delete it.
Step 5. Then close the registry, reboot PC and retry to open your external hard drive again.
Part 2. Seagate External Hard Drive Light Not Blinking
If your Seagate external hard drive is not working nor detecting and the light is not blinking, it may be caused by power supply issues or failed HDD. Here are four methods to deal with a Seagate external hard drive that is not blinking:
Method 1. Check the Power Supply
If there is a power supply issue, your external hard drive won't blink at all when you connect it to your computer. To check the power supply, you can:
Step 1. Change the USB cable.
Step 2. Change the USB port.
Step 3. Connect your external hard drive to another computer if possible.
Method 2. Take the External Hard Drive Out of Its Enclosure Case
The external hard drive you are using actually contains your external hard drive itself and its enclosure. To exclude the issues caused by the enclosure, take your external hard drive out of the disk enclosure and connect your HDD to your computer directly.
If the Seagate external hard drive still won't power up, try one of the two methods below.
Method 3. Ask for a Replacement
If the two tips above don't work, it's highly likely that your hard drive is dead. In this case, if your Seagate external hard drive is still under warranty, go to get a replacement from where you have bought it.
Method 4. Get Manual Data Recovery Service
If your HDD is dead and out of warranty, the best way to recover your precious data on the device is to ask for manual data recovery services. Any existing data recovery software cannot restore files from an external hard drive that has crashed or damaged since it can't be detected by the computer, not to mention perform data recovery on it. (You may be interested in hard drive recovery cost in 2020.)
Part 3. Restore Data from Seagate External Hard Drive
After fixing the Seagate external hard drive not working or not detecting issue, you may now try to open Seagate external hard drive to check your precious data.
If nothing is found or there is data loss on your hard drive, don't worry. Powerful hard drive recovery software - EaseUS Data Recovery Wizard will help you get lost data back. As long as your external hard drive can be detected by your computer and the data is not overwritten by new content, it will retrieve all lost data for you.
Follow to recover data from your external hard drive with a few simple clicks:
By going through three short stages, you can easily find lost data on a Seagate external hard drive.
Step 1. Under the 'External Devices', you should see the Seagate external hard drive showing up after it's correctly connected to your computer. Select the drive and click the Scan button.
Step 2. Soon, the software will find more and more data and display the data in the scan results.
Step 3. You can use the Filter feature to quickly locate some specific file types in the results. Select the target files and click the Recover button.
Part 4. Back Up Seagate External Hard Drive
Besides getting a powerful data recovery tool like EaseUS Data Recovery Wizard, it's necessary to back up your devices or files to reduce the risk of losing data on Seagate external hard drive and other devices.
To make a backup of your precious data, you can use free backup software - EaseUS Todo Backup. It supports the backup of your computer hard drives, external hard drives, USB, memory card, and other conventional storage devices. Whether you want to back up your device or selectively back up the files on it, you can get things done with the software.
Step 1. Connect the external hard drive or USB flash drive to your PC and run EaseUS Todo Backup.
Step 2. Click the left top icon and expand the pane, click 'File Backup'.
Step 3. Select the files that you want to backup to external hard drive or USB. And then click 'Browse' to navigate the external hard drive or USB flash drive as the file backup destination.
Step 4. Click 'Proceed' to execute the file to external hard drive/USB backup operation.
As long as you have a backup available, you will feel less annoyed and more relieved the next time you come across an issue like 'Seagate external hard drive light blinking but not working'. Don't hesitate to give it a try.
Conclusion
This page covers 10 fixes to help people get rid of the Seagate external hard drive is not working/detecting issues with its light blinking or not.
You can also apply the fixes to Toshiba, SanDisk or Samsung external hard drive that has the same error of 'external hard drive not working/detecting but light on' or 'external hard drive not working and light not blinking'.
People Also Ask
This page answers the question of 'How do I fix Seagate external hard drive not detected' with several practical solutions, such as changing the USB port, turning on USB Hub, updating device driver, and deleting the Registry key, etc. However, many users still have questions on external hard drive not showing up.
If you are one of these people, check the FAQs asked by people on Google and the answers we left below each question. Find your preferable answer here.
1. How do I fix a flashing external hard drive?
Usually, when an external hard drive flashing but not recognized, it's probably the device that is not connected correctly or the device has a power supply issue. You can first change the USB hub power settings:
Next, you need to update the external hard drive driver to make sure the device driver is updated. For your details, you may refer to flash drive blinking red as a guide.
2. What does a blinking hard drive light mean?
On a healthy external hard drive or USB flash drive, it's entirely normal for the activity light to flash on and off repeatedly, all day long. The continuously flash on and off of device light means that the drive is being written and read from, such as transferring files, running programs, etc.
Windows often wait until your computer is idle so to run specific tasks. That is why you see the hard drive activity light flashing even when you're not doing anything.
3. Why is my external hard drive not showing up?
There are many reasons that may cause your external hard drive not showing up. Here is a list of main causes that stops your device from showing up:
For a complete solution, you may refer to Hard Drive Is Not Showing Up or Recognized for help. The solutions are applicable to both internal and external hard drives.
Summary: When plugging your Seagate Backup Plus into a Mac computer, you may find the drive stops working and is not mounting in Disk Utility. Have you been troubled by the issue? This post will give you 7 workable solutions to fix Seagate Backup Plus drive not mounting/working issue on Mac.
A large number of users reported that they were unable to mount Seagate Backup Plus drive on Mac computers. And some say theirSeagate Backup Plus couldn't work on Mac after plugged in. Here is a real example:
'I really need your help. My Seagate Backup plus just stopped getting detected (led not working anymore) with my MacBook Pro 2016 model (with USB Type C to USB 3 connector) suddenly. It was working fine 1 month before. I tried this backup disk with a Windows computer and the LED light is working in that case but I am not able to get it to work with my MacBook Pro anymore. Any idea guys?'
In fact, this issue is very common, especially for those who frequently share the same drive between different computers. Now, let's walk through how to fix it if the Seagate Backup Plus doesn't work on Mac.
7 solutions to fix Seagate Backup Plus not mounting, not working on Mac
Seagate Backup Plus external hard drive is often used to back up important files. But for some reason, Seagate external hard drives could not be recognized by Mac. If you can't mount the Seagate Backup Plus drive in Disk Utility, it means the hard drive is not working on Mac and you can't access the data stored on it. So it's very urgent to fix the problem to make it work again.
Here are solutions to the Seagate Backup Plus not working or mounting issue.
1. Have some basic checks
Sometimes, the Seagate Backup Plus drive won't mount on Mac is due to the bad USB port or cable. Thus, once the Seagate Backup Plus drive stops working, you can first do some routine checks as below.
2. Check whether the Seagate Backup Plus is showing up in Disk Utility
To troubleshoot this problem, you first need to know if this Seagate hard drive is detected by your Mac. Open the Utilities folder in your Applications folder. Launch Disk Utility and check the left pane then. If you can't see the external hard drive in macOS, the drive probably has been physically damaged. In that case, you should send the drive to the local repair shop. Otherwise, you can move to the next solution.
3. Check if the Seagate Backup Plus drive is mounted in Disk UtilitySeagate Backup Plus Slim Itb Mac Software Download
If the Seagate Backup Plus is mounted in Disk Utility, you should blame the wrong computer settings or outdated computer. Fortunately, it's easy to fix these issues. Just try solution 4 and solution 5. If the external hard drive is greyed out in Disk Utility, it's not mounted. You can try right-clicking the Seagate Backup Plus and choose the 'Mount' button. If that doesn't work, the drive has some file system problems. Please follow the solution 6 to repair the problem.
4. Show the Seagate Backup Plus on the desktop
If the Seagate external hard drive is mounted in Disk Utility, but it still doesn't show up on Mac. First of all, you should make sure the settings in Finder display drive icons on the desktop.
Step 1: Go to Finder > Preferences > General tab.
Step 2: Select 'External disks' under 'Show these items on the desktop' and then the connected external hard drive will appear on the desktop.
5. Repair Seagate Backup Plus drive via First Aid
Seagate Backup Plus not mounting issue on Mac can be caused by file system problems. Disk Utility's First Aid is a built-in tool on Mac to deal with errors related to disks, such as file system corruption. So you can try to fix the unmountable/corrupted Seagate Backup Plus external hard drive in Disk Utility by following the steps below.
Step 1: Go to Utilities Disk Utility.
Step 2: Click 'View' in the top menu bar (Or click 'View' on the top window). Then select 'Show All Devices'.
Step 3: Select the Seagate Backup Plus external hard drive from the left sidebar.
Step 4: Click 'First Aid' on the top of the Disk Utility window.
Step 5: Click 'Run' to perform hard disk diagnostics and fix the not mounting/not working Seagate Backup Plus.
6. Update the software on Mac
Software updates keep your computer and programs secure, deal with quite a few bugs, and provide new features. Out-of-date software can cause a variety of issues. It's possible that the operating system will become sluggish and the connected device may not function properly. Fortunately, you can easily update the software on Mac.
Case 1. Update the software on macOS Mojave or Catalina. If you upgrade to macOS Mojave or macOS Catalina, you should choose 'System Preferences' from the Apple menu, then click 'Software Update' to check for updates. If any updates are available, click 'Update Now' to install them.
Case 2. Update the software on earlier macOS versions. Just launch the Mac App Store, click the 'Update' tab on the top and then choose the 'Update All'.
7. Fix the not mounting or working Seagate Backup Plus drive by reformatting
If First Aid failed on the external hard drive, it might have some serious errors that are beyond its reparation capability. In that case, you need to recover lost data from the Seagate Backup Plus external hard drive as soon as possible.
Step 1. Recover lost data from the unmountable/corrupted Seagate Back Plus
iBoysoft Data Recovery for Mac is free external hard drive data recovery software. It can easily recover files when the hard drive is not working or mounting on Mac. Also, it canrecover deleted photos and lost data from formatted drives, unreadable drives, corrupted drives, and recover deleted/lost partitions, etc. It's compatible withmacOS 10.15/10.14/10.13/10.12/10.11/10.10/10.9/10.8/10.7.
Here is a short video tutorial which shows you how to recover lost data from unmountable/corrupted external hard drives:
Step 2: Reformat the Seagate Backup Plus to make it work
After recovering data from the unmounted Seagate Backup Plus, you can now go to Disk Utility and reformat it without worrying about data loss.
Seagate Backup Plus Mac Setup
If unfortunately, you can't reformat the Seagate Backup Plus drive, it must have physical issues. In this case, you have to look for help from a local data recovery company.
Bonus Part: Introduction to different Seagate Backup Plus drives
You probably use a Seagate desktop drive like Backup Plus Hub and Expansion. Or you could use a Backup Plus Portable drive like Ultra Touch and Slim. No matter which Seagate Backup Plus drive you choose, it could not work on the Mac for some reason.
Therefore, it's important to know the differences between those Seagate Backup Plus drives. This helps you to use the Seagate Backup Plus drive more correctly and efficiently, and then avoid hard disk corruption.
Conclusion
No matter what caused Seagate Backup Plus not mounting, working, or readable issue on Mac, such as logical problems and physical damages, the most important thing is to back up important data or recover lost data with free Mac data recovery software. iBoysoft Data Recovery for Mac is a powerful and reliable data recovery tool on macOS which supports various external drives, including external hard drives, SD cards, USB flash drives, etc.
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If you have any suggestions to solve this issue or experience any questions when using iBoysoft Data Recovery for Mac, please feel free to let us know.
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