Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!mailrus!usenet.ins.cwru.edu!mephisto!mcnc!ecsvax.uncecs.edu!trent
From: trent@uncecs.edu (Glenn Jordan)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Help interpreting Coretest 2.8
Message-ID: <1990Feb7.081113.3583@uncecs.edu>
Date: 7 Feb 90 08:11:13 GMT
References: <380@csnz.co.nz> <20800006@adaptex> <6774@tekgvs.LABS.TEK.COM>
Organization: UNC Educational Computing Service
Lines: 10


 Regarding the 1024 cylinder DOS limit :
Ontrack used to distribute a TSR with Disk Manager version 3.3 called
SWBIOS.com that would allow access to all 1224 cylinders (if you had them).
They warn you in the docs that programs that use INT 13 low-level disk I/O
would bypass this scheme and overlap back to cylinder 0 or 1 instead of
1024 or 1025, trashing valuable things. I never used it, figuring it to 
be deadly, and it is GONE from the 4.0 version I saw recently. Has its
function been taken over by something else in Disk Manager 4.0, or did
they give it up as a bad job ?