By Greg5884
For the past week, I've been determined to triple boot with my existing Windows 7 installation, Ubuntu, and Mac OS X (Hackintosh). In order to do so on my laptop, I would have to change the partition table from MBR (Master Boot Record) to GPT (Guided Partition Table).
However, I did not want to lose my existing Windows 7 installation since I had a lot of files/applications already installed. Moreover, I've had a woeful track record of having my data botched during Windows backups.
Many of the how-to's covering this conversion typically say that you have to wipe the entire hard drive and reinstall, but after following a few different guides and doing enough tinkering around in Windows PE, I managed to retain my same Windows partition without any loss.