From: "Trevor Schmidt" <tschmidt AT icon DOT co DOT za>
Newsgroups: comp.os.msdos.djgpp
Subject: Save Disk Sectors To a File ?
Date: 18 May 1998 17:33:23 GMT
Organization: An Internet Solution Customer
Lines: 27
Message-ID: <01bd8282$b1c551a0$1d9d22c4@bschmidt.icon.co.za>
NNTP-Posting-Host: m1-29-ctn.dial-up.net
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
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I am trying to read physical disk sectors and then store them into a
file using the C programming language. (but does not have to be done in C).

I was told to use ABSREAD() but have had no luck as it is not in my
compilers DOS.H file. (or any of the .H files). I am using PCC and dgjpp.

My understanding of the absread() command is :
int absread(int drive,int count,int start,void *buffer)
where 	drive = 0 for A,1 for B and 2 for C
	count = numbers of sectors to read
	start = first sector number
	buffer = address of buffer
and then write the contents of the buffer to a file.

The ABSREAD() command seems to be a non standard extensions, that 
don't exist in all compilers including DGJPP. 

If you have written C code using absread() or if you know how to read disk
sectors to a file maybe using either _bios_disk or you set up the registers
for the relevant BIOS interrupt and called int86(), then please assist.

Thank you

Trevor
tschmidt AT icon DOT co DOT za