in general defrag is not necessary in os x. possibly large video file  
editing would be the exception, imovie seems effected by disk  
fragmentation. other than what permissions repairs that are forced on  
me by installers, updates etc, i have done no disk maintenance for  
some time. best...jf

On Sep 11, 2007, at 12:44 AM, Stephen Ellis wrote:

>
> Is it necessary to periodically defrag a Mac? I seem to remember
> something about maintenance that a Mac automatically performs.  Are
> there other things that should be regularly done?
>
> Steve

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