When you launch the Short Drive Self Test drives run through diagnostic routine that is built in to the hard drive’s firmware. DST is completely data safe and adequate for most situations.
Select the PATA-SATA drive that you want to test and then launch a basic test. If SeaTools software indicated a FAIL statues and you have attempted to repair bad sectors, then you should consider checking the warranty status your device or hard disk.
This tool is a useful testing tool to eliminate the hard disc drive as the source or the physical cause of the system problem.
The Advanced Tests menu has options that could erase your data or make the drive unusable for your system. We recommend you backup all data before using this tool and also make sure that you go through the official manual to know more about each test in detail.
You can also get Acronis True Image as a free download for your Seagate hard drive.
Summary
Here is a step-by-step guide for you to fix Seagate external hard drive not showing up in My Computer in Windows 10. Providing that data is valuable, we suggest you try fixes first to make the disk show up in Disk Management, and next take one more step to recover data on the unrecognized Seagate external hard drive with the help of EaseUS Data Recovery Wizard.
'My 320 GB Seagate external hard drive is detected but not showing up in My Computer. What should I do? In Device Manager, it gets detected and in disk management, it shows up as 'unallocated'. Is there any way to fix the issue? If I initialize it, will I lose all the data on the drive? I'm using Windows 10.'
How to fix Seagate external hard drive not showing up in Windows 10
Sometimes, when you plug in your Seagate external hard drive to PC, it cannot be recognized by your PC. As a result, the disk and the folders & files on it then become inaccessible. Actually, there are not the few have experienced such an issue of Seagate external hard drive not showing up in Windows 10 Computer. Next, we will show you how to fix the issue without losing data.
1. Make Seagate external hard drive show up in disk management
The first thing you need to do is to check if it is showing up in disk management. If yes, you can skip to the next step. And if not, you should first update the disk driver to make the Seagate external hard drive recognized by Windows and show up in disk management.
Step 1. In Run (Windows + R), type devmgmt.msc and hit Enter.
Step 2. In Device Manager, next to Universal Serial Bus controller, click '+ (plus)'. Then you'll see a yellow exclamation mark. Right-click and choose update driver software.
Step 3. Click 'automatically search for driver software online...'
Step 4. After the process completes, restart your computer and the driver should be automatically installed and loaded in your computer.
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Step 5. Go to Windows Disk Management (This PC > Manage > Disk Management), check if the Seagate external hard drive shows as a normal hard disk there.
Sometimes, even the hard drive shows up in Disk Management, it's with strange characters like Unallocated, RAW, disk unknown not initialized, etc. It's detected but not accessible, so this time you must perform data recovery on the hard drive without delay.
2. Recover data from the Seagate external hard drive which is showing but not opening
When you see the Seagate external hard drive listed in the Disk Management window, you can try EaseUS disk data recovery to retrieve your data. It works well on external hard drive data recovery even when the disk is not opening in your Computer.
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.
3. Reformat and partition Seagate external hard drive to make it show up in Computer
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After Seagate external hard drive recovery, you can then reformat and partition the disk to initialize the disk and make it show up in your computer without losing data.
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Step 1. Go to This PC > Manage > Disk Management, right-click the disk partition you need to format and then choose Format.
Step 2. In the pop-up window, you can set file system and cluster size and then click OK.
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Note: If you also happen to encounter the flash drive not showing up on Mac, here is the access for online help.
