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Windows 7 install onto GPT drive

I have a Lenovo N480 laptop that came preinstalled with Windows 8. I want to "upgrade it" to Windows 7 Enterprise.

Whe I boot to the CD, I deleted the Windows 8 partition but I left the remaining partitions so I could still use the Windows recovery in the future if I wanted to.
On the disk mangement screen I get a message. "Windows cannot be installed onto this partition (Show Details). The details say that Windows cannot be installed onto this disk becasue it is a GPT partition style.

How do I convince the laptop to let me install Windows 7?
2 Solutions

An exhaustive list of FAQ's on this is here : http://msdn.microsoft.com/en-us/windows/hardware/gg463525.aspx
Q.  Can Windows 7, Windows Vista, and Windows Server 2008 read, write, and boot from GPT disks?
A. Yes, all versions can use GPT partitioned disks for data. Booting is only supported for 64-bit editions on UEFI-based systems.

I'm guessing that the N480 is UEFI as it's running Windows 8, so...is the Windows 7 media you are trying to boot from 64bit?  If not either you need to
1. Get 64bit Windows 7
2. The disk will need converting to MBR (using dispart "convert mbr" followed by "clean")- but you'll loose the recovery partition in the process of converting the disk.

Hope that helps,
Seth SimmonsSr. Systems AdministratorCommented:
to get passed that you would (as alastair mentioned) clean the drive through diskpart which would wipe the drive

if you really want to keep the recovery partition, you might be better off getting another hard drive and installing windows 7 on that and put the windows 8 drive in a safe place.  just make sure you check your bios for secure boot and disable it since windows 7 doesn't support it
LostInWindowsAuthor Commented:
The DVD was x64 but I needed toi wipe the drive. Thanks for your help!!
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