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Crosshair V Formula UEFI Mode

ambi3nttech
Level 7
I am trying to install Windows 8 on my 3TB Seagate Barracuda however when I try to install I get the error "Windows cannot be installed to this disk. The selected disk is not of the GPT partition style". I think that this is because the computer has booted into BIOS mode instead of UEFI mode, however I've heard that the Crosshair V Formula boots into UEFI mode by default so my conclusion might be incorrect. If this is not true, how do I boot the motherboard into UEFI mode? I've checked the settings in the BIOS and found nothing. Any help would be appreciated.
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2 REPLIES 2

neyuru
Level 10
do you have the option for eliminating and formatting the disk during installation of win8? if so, that might help.

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Rampage IV Extreme BIOS 4206
Intel I7-3820
32 GB Quad Channel Kingston Hyper X Genesis
2 x Nvidia GTX 690
2 x WD Velociraptor 250 GB RAID0
Intel 120GB 320 SSD
Noctua NH-D14 SE2011
CM Silent Pro Hybrid - 1300W
CM HAFx

Yes, I've done that. I've tried formatting it as both GPT and MBR patitions however the maximum MBR partition size is 2TB, so the rest of my hard drive would be unusable.