In fact i have tried with a clean disk to install with /root, /home and swap encrypted and it has revealed impossible, i did tried all possible scenarios and was not possible to encrypt.
I also tried woth the debian testing cd and also revealed impossible, so this its s bug in the debian-install source.
Anyway theres no way to install using the CD to encrypt partitions.
In fact i have tried with a clean disk to install with /root, /home and swap encrypted and it has revealed impossible, i did tried all possible scenarios and was not possible to encrypt.
I also tried woth the debian testing cd and also revealed impossible, so this its s bug in the debian-install source.
Anyway theres no way to install using the CD to encrypt partitions.