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Mac Forum / General / General / September 2008About defragging a Mac Pro
Hi again. Two part question: 1 What's a recommended app for defragging a Mac Pro? 2 How do you know if your machine is continuing to defrag itself, or has for some reason just decided to hang forever and ever? It really made me nervous (read Horrified) when I defragged one a couple years ago and it took 4 days before giving me my computer back. You know what I mean? Thanks - Danny > Hi again. Two part question: > [quoted text clipped - 5 lines] > couple years ago and it took 4 days before giving me my computer back. > You know what I mean? Thanks - Danny I *believe* that the OS defrags itself when a software update happens, but I am not sure. If true, then this defrags only the OS. The only program that I know of which has defrag tools for the whole HD is TechTool Pro. TechTool Pro and DiskWarrior are the two premier disk utilities programs, and I highly recommend keeping a copy that matches your OS version of each program. TechTool Pro has a progress bar, so as long as progress is being made, I would think that the machine hasn't hung. StephenC > > Hi again. Two part question: > > [quoted text clipped - 18 lines] > > StephenC Perfect. Thank you StephenC - Lots! Danny > > > Hi again. Two part question: > > > [quoted text clipped - 24 lines] > Perfect. Thank you StephenC - Lots! > Danny OS X "defrags" all the time in the background. It watches for commonly used files and gives them allocation priority, and does a bunch of other stuff. Google around if you want to know more. Bottom line: manual (i.e. using one of those apps) defragging is not helpful and is just a time-waster.  SignatureTeam EM to the rescue! http://www.team-em.com >>>> Hi again. Two part question: >>>> [quoted text clipped - 31 lines] > Bottom line: manual (i.e. using one of those apps) defragging is not > helpful and is just a time-waster. Carl, I did Google, as you suggested, and did find some circumstances where manual defragging could be useful, according to Apple. "Apple's input on the subject is, as usual, less than definite. The company states explicitly in Knowledge Base article #25668 (published in 2003) that that "you probably won't need to optimize at all if you use Mac OS X," then provides instructions for what you should do "if you think you might need to defragment." According Apple's advice, there are two scenarios under which you might need to defragment your drive: You have many large files (such as digital videos) Your disk is low on space (i.e. more than 90% full)" Apparently, OS X is very good at automatically defragging for you. But if your HD is mostly full, and you put a large file on it, the OS would have no choice but to split the file. For anyone who wants to read the full article, it is here: http://www.macfixit.com/article.php?story=20070301091515843 StephenC > Carl, I did Google, as you suggested, and did find some circumstances where > manual defragging could be useful, according to Apple. [quoted text clipped - 17 lines] > > StephenC Sounds reasonable to me. Of course, I'd also advise anyone who's cranked his disk over 80% full to buy a nice new one which will undoubtedly be half the price and 5 times the capacity :-) SignatureTeam EM to the rescue! http://www.team-em.com >> Carl, I did Google, as you suggested, and did find some circumstances where >> manual defragging could be useful, according to Apple. [quoted text clipped - 25 lines] > cranked his disk over 80% full to buy a nice new one which will > undoubtedly be half the price and 5 times the capacity :-) I agree. Fragged or defragged, I don't like a disk to be that full. |
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