New 3TB HDD, can only use 750GB?

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WaffleJack

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Nov 27, 2013
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Hello,

I just bought and installed a new 3TB hard drive, hooked it up and turned my system on. My system booted up normally, BIOS did not auto-detect the drive.I used a detection utility which gave me a PASS on the hard drive hookup, so all is well with connections. I went into Disk Management and the disk is present so I followed an on-line tutorial and set up a simple volume which I can now use. However, I can only access 750GB of the 3TB I should be able to (no other unallocated spaces are present in my disk management screen) any ideas about what I should try next?

Thanks for your help,
-WaffleJack
 
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WaffleJack

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Nov 27, 2013
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I only show the option to format after I create a simple volume, the maximum size it will let me make that volume is 750GB. Then I can only format that volume I just created. Unless I'm missing something. Care to elaborate?
 
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Alec Mowat

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Jan 8, 2014
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You have to delete the partition and delete the volume.

If the Disk only shows 750 GB on the left you may need to convert it by right clicking on the disk on the left side and select convert to GPT.

The Master Boot cannot detect a 3TB disk.
 
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WaffleJack

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Nov 27, 2013
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When I change the options between MBR and GPT I get a reading of MBR=746.52GB and GPT=746.39GB. A very minor change for changing that value. Currently I have deleted the volume. I tried to re-create and re-format the volume with no change to the data displayed.
 
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WaffleJack

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Nov 27, 2013
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10,510
Intel Core i7 2.80GHz, 8GB RAM, running Windows 7 64 bit SP1. I'm gonna be heartbroken if my motherboard is the issue, all those poor TBs trapped inside the HDD, never to be used.
 
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WaffleJack

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Nov 27, 2013
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You're right, that guy in the video was pretty annoying, but the link in his video description worked for me, disk now reads 2794.39GB unallocated. Thank you for sharing that link Alec Mowat. I don't have a thumb drive on hand but I'll dig one up tomorrow and apply that BIOS update you found too, just to head off some future problem.

Just when I was about to hang my head in resignation, thanks so much for your help!

Cheers,
-WaffleJack
 
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