Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!haven!umbc3.umbc.edu!umbc5.umbc.edu!cs106132
From: cs106132@umbc5.umbc.edu (cs106132)
Newsgroups: comp.sys.zenith
Subject: Zenith DOS 3.3+ problem!
Message-ID: <1991Apr1.212138.18402@umbc3.umbc.edu>
Date: 1 Apr 91 21:21:38 GMT
Sender: newspost@umbc3.umbc.edu (News  posting account)
Distribution: usa
Organization: University of Maryland Baltimore County
Lines: 16
Originator: cs106132@umbc5.umbc.edu


   Hello everyone,
I encountered a strange problem when trying to read the boot sector on a
40M hard disk formatted using Zenith DOS 3.3+, the one that supports large
partitions.  The program I am working on needs to read the boot sector and
extract some info from the BPB.  I use DOS absolute read interrupt 25h to
access logical sector 0.  For some reason, this works fine with MS-DOS systems,
but when I try using Zenith DOS 3.3+, it bombs out.
   If anyone out there has done some low level programming under Zenith DOS,
please let me know if there is a reason for this strange error.  If I use
BIOS int 13h with the info I get from partition table, I can get the boot
sector, but I would like to use DOS to stay compatible with the majority...
Any info will be appreciated.

Regards,
Tarkan