Hi all,
I've tested Drive Crypt Plus Pack, as a matter of fact I use it on a daily basis. It's a very good software and quite unique, in my opinion. The encryption algorithms are very strong. I never encountered problems with it and I am very satisfied. Someone specified that they lost their data while using this soft - well you have the option to create an emergency disk for cases like this. I took the liberty to present you with some of the main features of this soft that helped me so much, just to clarify your doubts
1. Boot protection
2. Pre-Boot authentication: Login before starting the operating system
3. Multiple OS boot support (Microsoft)
4. Invisible operating system (possibility to hide the entire operating system)
5. Full or partial hard disk encryption
6. Sector level protection
7. Complete "power off" protection i.e. unauthorized users are prohibited from starting up the PC
8. AES 256 bit encryption
9. Full hibernation support (hibernation files and disk-dump data are securely encrypted)
10.No size limitation for encrypted disks
With the software you also get the possibility to hide data into music or picture files.
I hope you will try to use Drive Crypt Plus Pack, my personal opinion about it is that it's the best on the market.
Cheers!