Hard Drive not showing in Disk Management on Windows 10?

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jerredpope

Reputable
Jan 29, 2016
3
0
4,510
I'm currently running Windows 10, and I'm having a problem with one of my hard drives. I previously had only a single 120GB Samsung SSD and a 4TB WD HDD in my build, and both work fine. However, I recently added another 4TB WD HDD to my system, but I cannot see it in Disk Management. It shows in BIOS and in Devices & Printers, but not in Device Management (link to screenshots attached). Any ideas on what is causing this and how to fix it?

http://imgur.com/a/E0PRj
 
Solution
SuperSoph_WD
Hey there, jerredpope!

Since your new 4 TB WD HDD is detected in Device Manager and BIOS, I'd recommend you to try the 'Rescan Disks' command in Disk Management and see if that will make the hard drive appear there, so you'd be able to initialize it and then partition & format it. If it still doesn't show up, I'd advise you to try using a different SATA cable and connect it to a different SATA port on the motherboard.

If the problem persists, you might want to consider resetting BIOS. This would get your BIOS settings back to factory defaults, so you'd need to reconfigure them afterwards, though.

Hope this helps. Keep me posted! :)
SuperSoph_WD
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SuperSoph_WD

SuperSoph_WD

Glorious
Jul 30, 2014
6,758
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Hey there, jerredpope!

Since your new 4 TB WD HDD is detected in Device Manager and BIOS, I'd recommend you to try the 'Rescan Disks' command in Disk Management and see if that will make the hard drive appear there, so you'd be able to initialize it and then partition & format it. If it still doesn't show up, I'd advise you to try using a different SATA cable and connect it to a different SATA port on the motherboard.

If the problem persists, you might want to consider resetting BIOS. This would get your BIOS settings back to factory defaults, so you'd need to reconfigure them afterwards, though.

Hope this helps. Keep me posted! :)
SuperSoph_WD
 
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Solution
N

nicmac303

Apr 25, 2018
1
0
10
I've had this problem on two different PCs now. I had Windows 10 installed on each hard drive & they worked separately, but when I plugged them both in I could only see one in Disk Management.
Installing the SATA (RAID) driver from the motherboard manufacturer's website fixed it both times.
Also bear in mind that there's an item 'Rescan Disks' within the Actions menu in Disk Management. That might help too, although it did nothing for me.
Cheers, Nick
 
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B

buck7455

Distinguished
Jul 4, 2011
3
0
18,510
I got this from a Microsoft tech today.
Open a command prompt with Administrator privileges.
Type and enter:
diskpart
list disk
select disk 1 (or whatever disk # that you want to see in Disk Management)
attributes disk clear readonly (yes, that's one long command)
online disk
convert mbr
exit

After typing and entering each of those 7 commands, reboot and check Disk Management. If more than one partition exists, right click on it and chose to convert to a GPT disk. That should take care of the 2 TB limit problem.
 
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