[quote] Just a guess but when you defrag you may get rid of the optimizations done by installers(I.E. prebinding). <hr></blockquote>
[quote]Unfortunately, none of the profiles currently shipped with Norton work very well with OSX. They won't break the disk, of course, but they'll slow things down. Someone apparently made a very good one several months ago, but I don't know where to find it now. <hr></blockquote>
[quote] Two questions:
1) Why do you feel the need to defrag your hard drive when you don't even know how OSX prebinding works?
2) Why do you need to make a boot disk? If you had a retail version of Diskwarrior or Norton you would not have to make one.
Mac's are simple as hell to defrag. Things get complicated when you don't know how OSX works and when you use pirated software.
You do not need to defrag your drive for OSX. I would love to know why you feel the need to. <hr></blockquote>
[quote] When you install an OSX update it prebinds so without getting fancy is is pretty much doing the same thing as diskwarrior.
Apple does not say that optimizing your drive is necessary, the only native OSX disk utility "Drive X" does not have an optimizer. And even when people still optimize things get SLOWER. <hr></blockquote>
[quote] Ok- good! This above and Mal's post clear this up for me. It seems obvious that defragging will undo the prebinding (assuming that "location" means physical location on the drive...) <hr></blockquote>
[quote]If you run your disk with any modern filesystem and a great deal of free space, you may find that you never have to worry about defragmenting. <hr></blockquote>
[quote] - I'm sure that some people go overboard with their use of disk utilities, but that isn't to say they don't have their place. Actual defragging probably won't affect drive performance unless the disk is severely fragmented (which, unfortunately, isn't uncommon running OS X with minimal memory and no dedicated swap partition); however, defragging any disk carries with it the risk of badly messing said disk up. Doesn't happen often. But it does happen. <hr></blockquote>
[quote] Posts: 732
From: Rochester, NY
Registered: Sep 2000
\t posted 11-23-2001 01:42 PM Â*Â*Â* Â*Â*Â*Â* Â*Â* Â*Â* Â*Â*
Keep in mind that files are placed where they are on disk only when they are written out. If the OS writes out an 80mb swap file, which never gets bigger or smaller, it will *never* get any more fragmented than it was when it was initially created.
The best thing to do, then, is just to leave your swap files alone. Your swap files created when your install is new will likely be entirely contiguous -- and nothing will change that unless the files are deleted, and the OS needs to recreate them later when your file system is a tad more fragmented.
Honestly, the best thing you can do is let the OS create its swap files, and the leave 'em alone. They won't become fragemented over time -- when a file is created, it "locks in" its place on the disk drive, and unless the file is made larger, it will never become any more fragmented than it initially was.
This is one reason why Mac OS X uses fixed-sized swap files -- I also wouldn't be too surprised if it tried *really* hard to create swap files on a contiguous area of the disk when they *do* need to be created.
The best thing you can do to speed up Mac OS X is bitchin' to Apple to get on the stick and speed it up and/or purchase new hardware (which are slightly conflicting goals for Apple ). Sure, defragging might help a little bit, and it is nice to feel empowered, but the difference shouldn't be all that huge for most things.
If your computer is *really* thrashing VM so much that fragmentation makes a difference, you'd be a lot better off grabbing another 512mb of RAM for $50 or so ( <a href="http://www.ramjet.com/
</a> ) than defragging your hard drive constantly. <hr></blockquote>
Now, what were you saying?