Deltik

This is not documented in the man page. I was scouring the source code at first, which led me to a variable called binary_passwd. Then I looked for when this was introduced. Turns out the feature is documented in the changelog file, Changelog. A partial copy of the changelog for that version is also in the project news: https://sourceforge.net/p/hdparm/news/2015/06/hdparm-946-released/ hdparm-9.46: … - added "hex:aabbcc.." for binary security passwords.

Good news! hdparm version 9.46 (released on 2015-06-14) added support for binary security passwords by accepting the input in the form of a hex string. This also includes support for left-padded null bytes. Usage example: hdparm --user-master u --security-set-pass hex:8e0580838985672bc6c3c12a9cefd52a446390e7000000000000000000000000 /dev/sdc (Note that the password shown in the output of the command will be garbage if the input is binary and be blank if your password begins with a null byte, so you...

I honestly didn't realize that this ticket existed until today; I thought I was subscribed...