Hello DougDingle, the software abylon CRYPTDRIVE is a so-called container encryption solution. The containers themselves are of course stored as such on the hard disk and can be recognized by the size and file extension as such. What is NOT visible with the closed Cryptdrive, however, are the contained files! It is irrelevant whether the hard disk is booted with Windows or Linux.
Hello Mamar, sorry that we do not offer French. Everyone who does not have at least basic knowledge of German or English should be very careful with such tools. It is also easy to misunderstand an instruction, which can cause damage. Everyone is welcome to help with the translation.