Um...hate to say the emperor is wearing no clothes here, but isn't the filesystem used by OSX AND OS9 HFS+? And this is the same filesystem we've been using for several years? Or are you talking about UFS? (which very few Mac users are or should be using) Brett >Date: Fri, 20 Dec 2002 14:07:35 -0700 >Subject: Re: [Ti] utility for defragmenting my internal HD? >From: Guy Algot <guya_gdc at telusplanet.net> >Message-ID: <BA28D4A7.C2AF%guya_gdc at telusplanet.net> > >On 12/20/02 12:12 PM, "Mark C. Langston" <mark at bitshift.org> wrote: > >> Your applications are displaying the data accurately. >> What they're saying is this: The filesystem that OS X uses is different >> than that used by OS 9, or Windows. It's derived -- as is almost every >> other Unix filesystem -- from Kirk McKusik's Berkeley Fast Filesystem >> (BFFS). This type of filesystem was designed to handle fragmentation >> well instead of poorly. > >Mark, > >Thanks for the excellent explanation! > >Later, >Guy