Windows 8 3TB drive only Formats 2TB

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Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 16, 2013 10:30 am

I just built a new machine with suggestions from the TR system building guide. It has 64bit Windows 8 with a primary SSD 250Gb, and a secondary 3TB HDD. The machine runs great, but the 3TB HDD is only available as a drive with a little over 2TB, the almost 1Tb left I cannot do anything with under Windows Disk Management tools. I know that previously there was a drive size limitation in windows, is this what I am running into?
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Re: Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 16, 2013 10:32 am

Use GPT instead of MBR for the disk.
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Re: Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 16, 2013 10:41 am

I am unfamiliar with the abbreviations you used GPT/MBR?
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Re: Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 16, 2013 10:50 am

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Re: Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 16, 2013 11:05 am

Since you have just created the partition, delete that in Disk Management, convert the disk to GPT, and then you can recreate a 3TB partition.
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Re: Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 16, 2013 4:42 pm

Thanks, I'll give it a try.
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Re: Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 23, 2013 4:58 pm

Thanks that fixed it.
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Re: Windows 8 3TB drive only Formats 2TB

Postposted on Wed Oct 23, 2013 5:08 pm

FYI, OP in order to boot off that GPT partition, you are going to need some kind of boot loader that supports GPT. The boot loader used in older OS (Pre-Vista era) and classical BIOS do not support GPT.

Fortunately, GPT support is part of the UEFI spec. Most current RAID/Disk controllers support GPT booting in the event that you want to use a 3TIB+ HDD as a bootable device on an older system. There are also software-based solutions too (LILO/GRUB).
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