How to utilize 4TB HDD, which is showing up as 2.72TB

Posted by mason on Super User See other posts from Super User or by mason
Published on 2014-06-12T04:17:13Z Indexed on 2014/06/13 3:29 UTC
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Filed under:

hard-drive

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partitioning

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windows-8.1

I have two internal HDD's. They're both 4TB capacity. They're both formatted with the GPT partitioning scheme, and they're Basic Discs (not dynamic). I'm on Windows 8 64bit. I have UEFI, not BIOS.

When I view the discs in Computer Management MMC with Disk Management, they show that each partition is formatted as NTFS and takes up the entire drive. And it shows that each drive has a capacity of 3725.90GB in the bottom section of Disk Management, but 2.794.39GB in the top section. When I view the discs in "My Computer"/"This PC" they only show up as 2.72TB, which matches the amount capacity I'm getting from some other 3TB HDD's I have.

Why are they showing up as only 2.72GB? Will I be able to use the full 4TB capacity?

Also of note, although I'm not sure it's relevant: I often get corrupted files on these two HDD's. None of my other HDD's give me corrupted files. Usually the problem is fixed by running chkdsk /f on the drives, but it's extremely annoying.

In the picture below, it's the X: and Y: drives.

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Steps I've tried

Flashed latest BIOS (MSI J.90 to K.30)

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