I think the most problematic would be a hybrid drive, which is pretty common these days too. They're drives that are 50% or 75% a regular hard drive, but are 25% or 50% a solid state drive. What they do is constantly analyze the data that's accessed most frequently and migrate it off of the larger, slower, cheaper regular hard drive and keep it stored on the solid state drive. They do this continually, always updating and maintaining the fastest balance. The operating system and program files will likely be on the solid state drive, and things like data or documents will probably be on the slower, less complicated hard drive. The real problem is how they do this, how they track the information, where that data is located, and how it may be recoverable even after the entire "hard drive" (in total, both parts included) has been zeroed (0s written to literally every possible location -- total erasure).I don't have those answers, but I just thought it was worth pointing out so that people at least know there's additional concerns when dealing with these kinds of disks. Hopefully that's enough to find the answers if it's important to you.You know, I was going to say it's a shame Guru deleted all of his posts, but it occurs to me that I'll do the same thing when I'm not around anymore. Not like it really matters anyway -- everything we say here is probably recorded in a dozen different locations within 15 minutes of our posts, but you know... just to avoid making it *that* much easier for them and all (for all I know any "help" I've ever offered here could be used to charge me with conspiracy and throw me in jail for a decade -- God I hope not though)...