3TB HDD (Partition problem)

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Andres Canelson

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Apr 30, 2013
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I bought 1 samsung SDD 120GB and a 3TB segate HDD.

Created the partitions for the SDD and installed Windows 8.1 in it but I have a problem with my HDD.

It created a 2TB parition and another 746GB but the 746GB one is still Unallocated and I can't change, shrink, expand or do anything to it.

I have tried whatever I can think of but nothing works.

If any extra info is needed please ask and thanks in advance for your help
 
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xcrossroadsx

xcrossroadsx

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Dec 13, 2011
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For a quick rundown:
MBR (the standard for HDDs) only supports drives up to 2TB. In order to get more space, you will need to convert the drive to GPT. The easiest way to do this is:
open "diskpart" in an administrator command prompt
enter "lis dis" then "sel dis x" where x is the number of the 3TB drive
enter "clean"
enter "convert gpt"
enter "create partition primary"
enter "format quick fs=ntfs"
This will create a single 3TB GPT partition. Be wary that this will erase all data on the drive, so back up anything you want to keep.
 
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