I have win7 x64 as my primary OS with win8 x64 install as a secondary on dual boot (Win7 x64 installed a long time ago). What i wish to know is can i re-install win7 and still keep the win8, although i am pretty sure i will have to do something to re-enable the win8 in the boot options... Win7 installed on partition 0 Win8 installed on partition 1 both installed on the same hard disk, disk 0