A SudhaKarNote that atleat 25% of hard disk is required to do a disk defragmentation.You do not need 25% free space. 15% is sufficient, and third party defraggers can work...

I am a materials engineer, so ask your question. I'll try my best to answer it. However, no guarantees that I can 😀

Nanotechnology is a promising field, but also riddled with a lot of hype. Because the behaviour of materials at the nano-scale is quite different from bulk behavior, the properties of...