Is it possible to defrag to much, can this be potentially harmful to your hard drive?
Just curious as I like to defrag my Hard disk every week or so sometimes even more often...
Technically Yes. By defragmenting multiple times, you're putting wear and tear of the hard drive. However, I have several hard drives with over 30k hours of spin time on them and they are still in good health. Once a week is not bad. It actually can be good since it will not have as much work to do as if you only defragmented once every few months. Spinning platters will generate more heat. Heat on hard drives is okay to a certain level, but a long running defragmenting will cause the hard drive to be at a higher heat for a longer amount of time which could increase the risk of potential damage. With all things considered, you're best off leaving the defragmenter to its once-a-week schedule. Unless if this is a SSD in which case you should not be defragmenting at all.