This is perhaps an advanced question, I'm not really sure where it belongs but I'll ask it here I guess. I keep hard drive clones (not quite the same as copy/paste) which are made using macrium reflect - I do this so that when an OS drive eventually fails, I can just slot in this clone and be back up and running fairly fast with only a few files to recover rather than the entire computer. Hard drive clones are great, except, all of the software I have tried has a fatal flaw; They require you to format the cloned drive, before you can make a new clone. The problem here arises in the fact that, between the time the hard drive is formatted and the time the new data is written to the cloned drive, there is no 'clone', so if my computer decides that of all times to die it'll die now (which sods law dictates would happen) then I am left with only a half-complete clone and a dead harddrive. So, what I'd like to do ideally, is be able to 'update' my clone, in such a way that it doesn't format the data that is already on there, but updates where nessacary, so if it fails halfway through at worst I just have a couple of corrupt files. Does anyone know of any software that can acheive this?