Hi, I'm new to these forums, having recently downloaded and installed the 2012 Free edition of Paragon Back-up and Recovery. And I am also pretty much a novice in as far as understanding some of the key concepts of file back-up and recovery- so I hope you will be gentle with me I recently purchased myself a new HP computer after a recent hard-drive meltdown. My O.S is Windows 7 HP (64 bit). What I am attempting to do is a full system back-up, and a subsequent differential one (this is a long and torturous story so I will try to be as succinct as possible). And it is entirely possible that a full system back-up + differential back-up may not be the best course of action for me, in which case I will be guided by the advice and suggestions of any kind people on this forum who respond. So in a nutshell (or as close to it as I can be): After getting my new computer, I started to think about the importance of backing up my files, and attempted to do so using the 'generic' back-up facility provided with Windows 7 HP. As I am sure you can probably predict this was far from satisfactory and in fact did not work. So I got online and posted in a couple of computer forums and several experienced posters guided me towards 'third party' back-up software, particularly Macrium Reflect Free. Using Macrium Reflect Free, I was able to create a Linux recovery disc, and a WindowsPE recovery disc (from memory, I tested the Linux one and ascertained that it did indeed 'boot up' successfully). When I attempted a full system back-up, I found that I completed it successfully on my 1 TB external hard-drive, but that it was puzzlingly large (695 GB), which was puzzling given that the two biggest folders were 'video' (258 GB) and 'Music' (54.9 GB) giving a total of around 312 GB. At this stage I started to get decidedly confused, with well-meaning posters and mods on these forums advising me to create separate partitions etc. It was a bit much for my poor brain to cope with, and I started to feel like I just wanted the job done with as little fuss as possible! I started to think I should just get a full back-up done, and then a differential (and if my memory serves me correctly, this is all I need in order to 'recover' from a bad hard-drive crash). However Macrium Free does not offer differential back-up, so I researched until I found Paragon 2012 Free Back-up and Recovery. Anyway, I managed to complete a full back-up using Paragon Free, but again, this came in at a very large size (690 GB). What is even more puzzling to this newbie is that although I have a 1 TB external Hard-Drive, and the back-up was 'only' 690 GB, according to my computer (where it lists the various drives) I have only 64 MB left on the external hard drive. So I guess this leads to my actual questions: Why exactly is it that I have only 64 MB left on my external hard drive? Also (assuming I manage to accomplish a full back-up with Paragon Free plus a differential), is it vitally important that I create recovery media using Paragon, or will the ones I have made with Macrium Free suffice? Thank you to anyone who managed to read to the end of my post, and thanks in advance to any kind folk who can help!