Have just downloaded and used Defraggler.
Firstly, after analysing my C drive, it told me I had 45.1GB of used space and 10.5 GB of fragmented files, which totalled 23%. So, I defragged.
After defrag I analysed again. I now still had 45.1 GB of used space but 15.5 GB of fragmented files totalling 34%. Again I defragged.
After 2nd defrag I now had 47.5 GB of used space and 17.3 GB of fragmented files totalling 36%.
Apparently, not only are the fragmented files increasing in complexity and percentage, but Defragglers developers have overcome the laws of physics and made my used space increase, ie. made something out of nothing.
This is a DE-fragging programme isn't it?
Sub