Accessing BitLocker To Go encrypted drives on Windows XP and Vista
Windows 7 introduced BitLocker which
encrypts an entire drive so the files on it can only be accessed with
the correct credentials, e.g. a password. Microsoft created BitLocker To Go
so that the files on an encrypted drive could also be accessed with
Windows XP and Windows Vista. However, on XP and Vista the files are
read-only and the drive cannot be accessed from Windows File Explorer, i.e.
it doesn't appear as a normal drive or even a Windows File Explorer shell
extension. Therefore, when using Windows XP or Vista to access files on a
BitLocker encrypted drive you cannot use any version of SyncBack to
access the files. Only the BitLocker To Go software can be used to access the files.
If you wish to encrypt entire drives (or partitions), and are using Vista or older, then an alternative to BitLocker is the free and open source software TrueCrypt: http://www.truecrypt.org/. It is available for Windows XP and newer, MacOS, and Linux. However, please note that TrueCrypt is no longer supported and is out of development. An alternative is VeraCrypt: https://www.veracrypt.fr/en/Home.html