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When i type lockhd and the pass it says
Oh yeah you don't type hdlock then the password. HDlock is a program, on the command line (option1 on boot) type 'hdlock', the program will load and display connected devices on IDE, select the hard drive to lock. You will now be prompted for the password, enter it exactly as you wrote down and press enter. A message should appear telling you that your drive is now locked.
btw typing 'lockhd' as you did won't do a thing, the application is called 'hdlock'.