Hi, I wanted to know what disk defragmentation is and how and why is it helpful/harmful.
Also, -for people who have done it- are there any risks that while defragmenting your hdd, something can go terribly wrong and your hdd is gone forever? from what i understand when u delete a file from windows, the system doesn't exactly erase the file on your hard disk, so u can using some special programs retrieve or edit that file. This 'deleted' disk space and the file u deleted remains on your hard disk until another file replaces it or something of that sort. OR is you defragment your hard disk then all the files that the system renders deleted, are in turn replased by other files, so that the 'Gap' of this deleted file is utilized and overridden.At least that's what i understood by reading a few snippets here and there. Is all this correct? Another part of my question is that for example if i have a 300 gb hdd, which is divided into 4 partitions, c,d,f,e, if i defragment my hdd, will any of my deleted data in lets say drive c be overridden by data in drive e?
Appreciate your assistance and advise.