I would like to Encrypt a secondary drive (NOT the OS/boot drive) and have it mounted and drive letter mapped etc, before Windows 7 gui boots up. This is because I will have mapped some user data onto the encrypted secondary drive so I need it to actually exist and working when trying to login to windows.
I'm primarily interested in DoxBox or equivalent windows encryption system that's compatible with dm-crypt / Luks etc. But if that's not possible with DoxBox I'm willing to consider Encfs or even Truecrypt and derivatives. Ideally something with decent performance like that of Truecrypt or Luks.
I'd also be interested in any performance tests comparing Bitlocker with Luks / dm-crypt. (Seems its been documented Bitlocker is faster than the others.)
(DoxBox started off as a fork of FreeOTFE seems..)