Hey all, apologies if this is a stupid question. I'm looking to reinstall OS X over the next couple of days (mostly, though not entirely, for reasons of fragmentation; I'm going to be deleting a very large number of enormous files, and the Apple website says a good way to defragment after doing that is to reinstall the operating system). Backup isn't an issue, and the time / hassle doesn't bother me in the least... but I'm slightly worried, having done this once before (not long after I got it, so about four months ago) that I risk doing it "too much". Notwithstanding whether it's strictly necessary or not, and taking backup and restore issues out of the equation, is there any physical damage to the laptop or the harddrive that can arise from doing an erase/install of the OS twice in six months, or is it just a case of being a lot of work for minimal or no benefit? If it's the latter, that's just fine, but if there's actually a risk of harming my computer by doing this, then that's a different kettle of fish. I don't intend to do this regularly or anything of the sort; ideally the file purge I intend to do is going to be a one-time thing, and I won't be doing this again any time in the foreseeable future, so it's not like I'm looking to do this consistently every few months... but, nonetheless, I think it's a good thing to know if doing so is at risk of hurting the harddrive (especially since I am a Windows convert, and relatively computer inept at the best of times, and would like to at least have a basic understanding of how best to take care of my MBP). Hope that makes sense. Again, apologies if this is a stupid question. Just trying to figure out what's best for my baby, so to speak.