I am running B&R 2013 Free on my PC (Windows 7 x64) and am backing up just my C drive (current size 105 GB) to an external HD via USB; the compression level is set to 'Normal' and the backup runs daily. The size of the backup on the external HD is now 860 GB and fast approaching the disc's full capacity). I was under the impression when I set up the backup that it would only retain the 'latest version' of the C drive, in which case surely it should now be no more than 105 GB, the current size of the C drive. Clearly I've either misunderstood something or got my settings wrong. Could I perhaps delete some of the older backup files whilst still retaining the last version of my C drive? Some guidance on this issue would be much appreciated.