Troubleshooting: Hard Drive won't appear in Disk Management

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turnstyle24

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Feb 7, 2015
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I built a PC last month. I ordered all the parts online and assembled it myself in my apartment. I had never done this before, but I sent my part list a friend who works for an IT company and he said everything was compatible. Everything is running great I have been able to troubleshoot all issues except for one.

I have an SSD (Silicon Power S60 3K P/E Cycle Toggle MLC 2.5" 120GB 7mm SATA III 6Gb/s Internal Solid State Drive) with the OS installed onto it (Windows 8.1), and for files I have a hybrid drive (Seagate Hybrid Drives ST1000LM014 1TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 2.5" Laptop SSHD -Bare Drive).

I have been trying to set them up since I built my PC but there is a problem. When I go into Disk Management I cannot see the Seagate hybrid drive. It is visible in device management, and from the BIOS, but I cannot get it to appear in Disk Management.

I have tried rescanning for disks, I have rewired, I even reinstalled the OS, but nothing has worked. I am at a loss as to how to make the drive detectable by disk management. I have switched my BIOS to AHCI mode from IDE but that did not help. I followed all the steps on this page (http://www.tomshardware.com/forum/265764-32-guide-installed-disk-system)

If anyone knows anything about this issue, some assistance would be appreciated.

Additional specs;
MB: ASUS P9X79 LE LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 ATX Intel Motherboard with USB BIOS
 
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WyomingKnott

WyomingKnott

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Aug 29, 2006
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Can you try the drive in another machine? That shouldn't make a difference if you can see it in the BIOS, but if you have one handy it's worth a try. Other things to try, just to narrow down the problem, would be to try a known good drive in the same port, move that drive to a different port, or download Parted Magic, boot into it, and see if you can initialize and partition the drive. I'm scraping the bottom of the barrel for ideas; all my good ones went into that guide.

Some very few motherboards require that you manually enable each port with a disk on it, but I've only seen that in Dell machines and you don't have a Dell. So I don't have any good ideas.
 
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chochosan321

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Jun 7, 2015
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I have the EXACT same issue and I also have the silicon power SSD as my boot drive... I have tried a hundred things as well and it still does not show up in disk management, but shows up in device manager...

Everyone tells me to partition and format but they do not understand that the disk management does not read it. This has gotten incredibly frustrating and I'm beginning to think it has to do with the silicon power ssd.... or the new HDD is a dud...

Anyone with an answer pleaaase help us!!!
 
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mpolcaro

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Dec 7, 2015
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I had this problem as well and if you installed Windows and then attached your second hard drive after the install was completed, you may have the same issue I did. I'm not quite sure what the proper terminology is, but essentially some of my other drives had "covered up" the drive letter where the second hard drive wanted to be. I had a empty SD card reader occupying the "D:" drive, so I went into disk management and reassigned it to a letter much further down the alphabet. I chose the "H:" drive, but any letter will work so long as you make room for hard drives/partitions at "D:", "E:". In fact, I cleared out all my removable drives from any letter even close to "D:" so that any future partitions will show up in the "proper" sequence of C-D-E. Rebooted the computer and boom, there was my second hard drive sitting where it wanted to be, at "D:"
 
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chochosan321

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mpolcaro,

Can you further explain how to assign a different letter? I did not have it hooked up when i was installing windows then added it and did not show so you are absolutely correct there. how do i reassign the letter?
 
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mpolcaro

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In Disk Management, you're going to find your CD/DVD/Card Reader Drives. Right click on them and Select Change Drive Letter and Paths. Assign them a letter well down into the alphabet, like J: or K:. Once D: is clear, then reboot.

Disk Management can be found by Right clicking Computer on the start menu/desktop and selecting Manage.
 
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