X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f NNTP-Posting-Date: Tue, 03 Apr 2007 01:32:49 -0500 Date: Mon, 02 Apr 2007 23:32:47 -0700 From: Jim Michaels User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 Newsgroups: comp.os.msdos.djgpp Subject: Re: cwsdpmi "protected mode not availible" on win2k, stub don't work References: <4610253F DOT 18094 DOT 166783AF AT gerritvn DOT gpvno DOT co DOT za> <200704020626 DOT l326Q3qV021058 AT envy DOT delorie DOT com> In-Reply-To: <200704020626.l326Q3qV021058@envy.delorie.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Message-ID: Lines: 31 NNTP-Posting-Host: 24.20.110.103 X-Trace: sv3-fD1uBaOb49067TNjgP0qmyuzbPMqMPQZ+lFAcnbgQhyZengIA4BjBtRBG3VOo4FvXLUsqTF7vXvHuWT!QxfNJLrVs/VDqFumCwAvWF9Bv1Oz1ZsLASIrd8nuec06fZERNzGMQYuc6NsxxwpIYnlxsZPP6Ngu!8LJtfF+QQHaOpNZZ5v8WOtchZg4WOw== X-Complaints-To: abuse AT comcast DOT net X-DMCA-Complaints-To: dmca AT comcast DOT net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.34 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com DJ Delorie wrote: >> I'm using only the latest binaries from the 2.03 compiler set of DJGPP. > > Look in pub/djgpp/beta, which is the pre-release for 2.04 > >> I'm looking at the generated EXE code by gxx and gcc and they both >> have this at the top close to somewhere after the MZ signature of a >> standard EXE: > > That's the standard 2kb stub loader, the code that gets your program > into 32-bit mode. It talks to DPMI, and knows how to load CWSDPI if > no DPMI server is present, but does not *require* CWSDPMI. > >> The application calls BIOS.H's biosdisk(): under windows XP the >> application causes Windows to throw the message: 16-bit MSDOS >> Subsystem: An application has attempted to directly access the hard >> disk, which cannot be supported. > > Sounds like XP is doing the right thing, by protecting the OS from > rogue programs trying to corrupt the hard drive. great. I just want to read and save the partition boot & MBR sectors for archival purposes. :-( I thought it would be be handy for certain operations of system rebuilding. looks like I go back to DOS floppies. I found an API call that might do the trick, but I would have to know ATA commands, and the PDF for that is huge. Does DJGPP have any other direct disk I/O API than biosdisk()/bios.h? My guess is no.