I have Windows 7 installed on C drive and installed Ubuntu on D drive. When I start the laptop, it starts with Ubuntu. I want to switch back to Windows 7. I don't want to lose any data on Windows 7. How can I uninstall Ubuntu using Ubuntu itself? I'm running Ubuntu 12.10 64bit.
if you have windows 7 on one HDD and Ubuntu on another HDD all you have to do is remove the Ubuntu drive and it will boot into Windows 7.
This then saves your Ubuntu installation in case you ever decide you want to go back to it all the while keeping Windows 7