I have an SSD running windows. It isn't the drive that came with the computer. I plan to Kill the drive with either killdisk or something similar in case it ever was taken for some reason. Now, if you clone the OS, that won't keep history, deleted files, etc, on the actual cloned system will it? The dban or kill disk will wipe everytthing like the MBR, etc. A clean install doesn't do that to my knowledge. So if I clone the OS to preserve my software and whatnot, then install it onto the drive that had dban or killdisk ran on it, what "stays" in terms of what can be recovered if it were taken by someone and examined (never think that could happen to me haha but never can be safe enough)? I would delete anything that I wouldn't want to be on a "cleaned" computer, then do the install. Is that terrible opsec or does killing the actual drive take care of all fuckery that may have been afoot?
If you're paranoid enough to be using killdisk against it, is it really worth the risk of bringing stuff over to another drive from it? Just rebuild from scratch so you know you're safe.