SecretDrive is a small, efficient and reliable program that allows you to create up to 16 encrypted virtual disks.Virtual disk is protected by one of five modern encryption algorighms: AES (Rijndael), Blowfish, Twofish, CAST 256.

Virtual disk looks like usual hard disk, so you can format it, defragment, check, backup and do other operations.It can be located in file or in random access memory (RAM).