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Having serious trouble getting windows 7 gpt usb install to boot UEFI
I was wondering if someone can help me on this.
I have a Dell XPS 15 L521X Laptop that currently has windows 8.1 installed on it.
Im trying to set it up as a dual-boot system with windows 7 as a secondary OS.
I have a Windows 7 X64bit OEM disk and tried to install windows 7 from the disk, but it would not allow me to install the operating system to a disk that was initalized as GPT. So I followed these instructions to make a bootable USB Stick Fat32 GPT to install media.
I set the bios to UEFI, Secure Boot: Off and attempted to boot from the usb stick. When the Start Windows Screen came up it hung. So I tried to boot that stick on another computer and got a windows failed to start error 0Xc0000225.
I cant reinstall Windows 8.1 because it has a programs and data on it that the owner does not want to reinstall or cant, is there a way to install Windows 7 in dual boot mode with a GPT Disk on this particular dell machine?