I have Ubuntu on my laptop. Now I want install Windows 7 in a dual-boot. How can I do this?
I can't lose my Ubuntu files, and I'm afraid that I might break GRUB.
Editor's note: Current readers should keep in mind that this is an older question, and the exact steps may have changed over time. Also, UEFI has primarily replaced BIOS in that time. As a result, many answers here may be out of date. Make sure you choose an answer appropriate to UEFI or BIOS depending on your system, and consider favoring more recent answers which may have more up-to-date information.