I have a laptop with GRUB boot on it that has Fedora and Windows XP. I was told that the grub boot is installed on a seperate partition than windows and fedora. Its on a 512mb boot partition. So I want to encrypt my windows xp partition, and when I use TrueCrypt, I go to select Multi-boot and it says that I can't do this. If I select Single-boot instead, will this effect the grub boot manager?