I usually partition my hard-drive so that the OS and applications are on C: and ll the data, including user folders such as Documents are on D:. I do this not for any performance gain, but just so I can format C: and reinstall everything if I have to without messing around with my data.
I'd like to use TrueCrypt and encrypt the entire hard drive so that I have a boot password and so that both logical drives will be available when the system boots. Will I still be able to format C: and install a new OS and apps with TrueCrypt there? How?!

