Yup. And who tells me that the manufacturer doesn't keep a master key to himself? When I go so far as to encrypt my drive then I'd rather use an open source pr

Yup. And who tells me that the manufacturer doesn't keep a master key to himself? When I go so far as to encrypt my drive then I'd rather use an open source product that I can download and compile myself. Not that I'd ever actually audit the source code myself - but at least I can be reasonably sure that multiple independent third parties have done it for me.