Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!hp4nl!ruuinf!accucx!aceverj
From: aceverj@accucx.cc.ruu.nl (Jaap Verhage)
Newsgroups: comp.sys.ibm.pc
Subject: Re: DOS 32 Meg limit
Message-ID: <446@accucx.cc.ruu.nl>
Date: 28 May 90 19:36:17 GMT
References: <2381@zipeecs.umich.edu>
Reply-To: aceverj@accucx.UUCP (Jaap Verhage)
Organization: Academic Computer Centre Utrecht, The Netherlands
Lines: 14

In article <2381@zipeecs.umich.edu> shim@zip.eecs.umich.edu (Sam Shim) writes:
>
>   A while back, I posted a message stating that DOS has a 32 Meg limit due to
>the fact that the sectors are mapped in the FAT, and that the FAT has room
>for only 65,535 entries (65,535 x 512 bytes = the 32 Meg limit).  This is
>wrong.  The reason for the 32 Meg limit is because with 2 byte sector
>addressing and 512 bytes per sector, DOS can only access 32 Megs of sectors.
>The FAT is a map of CLUSTERS, and not sectors, so theoretically, the FAT
>can map up to 130 Megabytes.  Thanks to John Nelson for pointing out the
>error.
>
Yes, all of this may be true, but the 32 Mb limit has
disappeared with DOS 4.0. I don't know what the limit is now,
but it's certainly more than it was.