I do not know, it is better to write to what section of a forum, but, apparently, it is a singularity of behavior of MT, therefore I will ask a question here.
Is: MT ASUS P10S-V/4L and SSD Samsung SM863a. Decided to try to adjust hardware disk encryption. A problem that if I install the password by means of the program hdparm I cannot  a disk through Bios at system loading. On the other hand, if I put the password in Biose I can not  a disk the program hdparm.
The Biocatfish heard about usage , for this reason tried different variants of coding:
Accordingly, for  in the program hdparm after password setting in Biose, also tried 3 variants of coding of the password. Does not work. It is possible them somehow ?