I am attempting to install Arch linux and dual boot it with windows. As I am running a modern UEFI system, I have put my SSD (see Specs below) in GPT format (losing my original windows installation in the process) where I plan on installing the UEFI boot loader, Windows, and Arch. At the moment I'm trying to reinstall Windows 7 (Professional x64), so I can do a UEFI boot. When I use Rufus to create a bootable GPT USB drive, I get the boot error 0xc0000225. When I try to do it manually with these (http://www.eightforums.com/tutorials...e-windows.html) instructions, my computer does not recognize my flash drive as bootable (it gives the insert proper boot media error). I am using this (http://msft.digitalrivercontent.net/win/X17-59186.iso) for the ISO, I also have an old installation disc. Booting the ISO without modification in Legacy BIOS works just fine, but I have no way to install windows to a GPT drive while booting in Legacy BIOS (Windows states it cannot be installed to a GPT drive, probably because it detects the system is running legacy bios instead of UEFI). How can I install Windows 7 onto GPT?
Specifications:
CPU: i5-4670k
Motherboard: Z87x-D3H Gigabyte
SSD: OCZ Vertex 3 (Set in GPT mode)
HDD: Western Digital Caviar Blue
Flash Drive: 8GB JetFlash Transcend USB 3.0
Answer
Set Rufus to MBR for UEFI with FAT32 file system to cause it to partition the flash drive as an MBR drive with a single FAT32 partition which contains the Windows UEFI boot files. Additionally you may want to disconnect all other drives. I was having an issue where my HDD which contained a copy of my old SSD installation partition was being recognized as a valid boot drive. This was causing the 0xc0000225 error (in addition to the flash drive being partitioned with the GUID partition table.
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