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From: amanda@lts.UUCP (Amanda Walker)
Newsgroups: comp.sys.mac.programmer
Subject: Re: disk space allocation
Message-ID: <935@lts.UUCP>
Date: 13 Mar 89 16:18:01 GMT
References: <7430006@hpwrce.HP.COM>
Reply-To: amanda@lts.UUCP (Amanda Walker)
Organization: InterCon Systems Corporation, Reston, VA
Lines: 18

ted@hpwrce.HP.COM ( Ted Johnson) writes:
    Does anyone know what kind of disk space allocation algorithm
    the Mac O.S. uses?  Is it contiguous, linked, indexed, or 
    something completely different?
    
    -Ted

Well, the old file system (MFS) used a linked-block system sickeningly
similar to MS-DOS.  The new file system (HFS) uses a better scheme
involving (effectively) a linked list of extents for each file, each of
which is a contiguous area on disk.  Inside Macintosh Volume IV has a
fairly detailed discussion of this.

-- 
Amanda Walker, InterCon Systems Corporation
amanda@lts.UUCP / ...!uunet!lts!amanda / 703.435.8170
--
I we were meant to fly, they wouldn't keep losing our luggage...