From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Raw disk access
Date: Tue, 12 Nov 2002 23:56:42 CST
Organization: Rice University, Houston TX
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> I need to write a NTFS partition browser, that will work from the pure DOS, 
> and I want to use DJGPP for that task.

http://www.wininternals.com/products/repairandrecovery/ntfsdospro.asp

If you go to the demo downloads, you get the browser portion for free.
Not to discourage you from writing your own, but sometimes free and 
existing is easier :-)

> Is it okay to use _bios_disk function for reading? Does it support reading 
> sectors beyound 1024 cylinder at least on modern BIOSes?

_bios_disk is limited to 1024 cylinders, using the old BIOS calls.  You 
will need to use dpmi_int to call new BIOS calls directly.