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3TB will only format 2TB

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December 17, 2011 9:28:21 AM

I shrunk my external drive to use a portion of it for downloads but now it will only allow me to format 2TB and the 768GB is wasted. How do i get it to merge the unallocated space again? I deleted all the volumes but it refuses to include the 768GB back into the disk.

More about : 3tb format 2tb

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a b G Storage
December 17, 2011 12:41:24 PM

Try GPT instead of MBR

If it is already in GPT, use diskpart

In elevated command prompt:

diskpart

list volume

(find the volume you want to extend)

select volume x (x is the number of the volume you want to extend)

extend
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December 17, 2011 9:01:06 PM

Do you have a 32 bit OS or a 64 bit OS?

I seem to remember that 32 bit OSs can't address more than 2 TBs of anything, be it RAM or Hard Drive space.

If you indeed have a 32 bit OS, you might want to look into this as the potential cause of your problems.
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December 17, 2011 10:42:50 PM

I figured it out about 5 minutes after makeing the post, thanks for the help though. I was unaware of the new file system in use by 3TB drives until now, i was wondering how they fixed the issue with them. :pt1cable: 
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December 17, 2011 10:43:51 PM

Best answer selected by Mystery42.
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December 17, 2011 10:44:12 PM

Both 32bit Viata and 7 have gpt support, so they can use drives larger than 2 TiB.
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