SSD showing up in BIOS and Device Manager but not Disk management...

Solution
Try opening a command prompt and typing "diskpart". You should then be able to type "list disk" and see if it shows up in the list. If it does type "select disk #" where # is the number of the disk you want to prepare. Now if you don't mind losing anything that is on the disk you can type "clean" and it will clear out all the old junk on the disk. If it fails for some reason, either there is something wrong with the disk or it's possible something like linux was previously installed and has locked the disk up. If it works you can type "create partition primary" to make a partition. After that you can type "select partition 1" and "format fs=ntfs quick" to do a quick format of the new partion and then type in "active". That should fix...

Davil

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Feb 2, 2012
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Try opening a command prompt and typing "diskpart". You should then be able to type "list disk" and see if it shows up in the list. If it does type "select disk #" where # is the number of the disk you want to prepare. Now if you don't mind losing anything that is on the disk you can type "clean" and it will clear out all the old junk on the disk. If it fails for some reason, either there is something wrong with the disk or it's possible something like linux was previously installed and has locked the disk up. If it works you can type "create partition primary" to make a partition. After that you can type "select partition 1" and "format fs=ntfs quick" to do a quick format of the new partion and then type in "active". That should fix any issues.
 
Solution