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3TB storage drive showing up as 2

Last response: in Storage
January 18, 2013 8:23:29 PM

I recently built a new system with Win7 Home Premium on an OCZ Vertex 4 and a Seagate Barracuda 3TB Storage drive. When I go into start-computer-manage-disk management, there is about 1TB of unallocated space that I can't merge with the rest of the drive for some reason. The "extend volume" option is whited out on the usable part of the drive. Is this just a fixable gimmick, or is my drive bad?
a b G Storage
January 18, 2013 8:31:45 PM

update your BIOS and use GPT not MBR
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January 18, 2013 8:50:04 PM

The first thing I did when I turned it on for the first time is update the bios from a flash drive.
a c 740 G Storage
January 18, 2013 9:13:31 PM

Its an MBR issue. The max addressable partition size is 2tb.
a b G Storage
January 18, 2013 9:51:12 PM

right click on on computer on the start menu
click on Manage
click disk management on the right side
you will see on the right side in grey disk 1, disk 2, disk 3 etc
right click on whatever disk # it is
Click Conver to GPT Disk
January 18, 2013 9:55:23 PM

That option is faded out

Best solution

a c 740 G Storage
January 18, 2013 11:23:13 PM

You can only convert if you delete the existing partition. Empty it by copying anything in it to you other drive and then delete the partition. Then you will have the option to convert it to GPT
January 26, 2013 6:30:29 PM

Best answer selected by ChilledGrease.