I have Windows 8 installed on a separate partition which I want to replace with Windows 7 and Ubuntu 12.10 installed on a separate partition. I want to do this without losing grub.
How should I do it?
gparted partition editor,in ubuntu and delete the windows 8 partition and format it to
boot-repair live disk .iso file,and make a bootable boot-repair live usb.
Insert windows 7 installation disk,and install windows 7 os on the deleted windows 8 partition.
After that insert
boot-repair live usb and boot from it.On startup click on the Recommende repair option.It will reinstall your grub.
if u wont use windows often try to install it within virtual box , for reference goto
other wise for dual boot goto
hope it is what u want.. if i was u , i wud definitely go with second option for dual-boot..