DMA Programming... DLII-Boot Read

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Article #41385

#41385

From: Gregory Lemperle-Kerr
Date: Wed, 28 Feb 1990 12:29

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	Does anyone know how DLII accomplishes the reading of boot sector
	0 of a hard drive?  Must this be done in assembler, or can I do
	it with Turbo C?

	Also: if I change the partition info on the boot sector and reboot,			will everything conform?

	Also:  I noticed that ICD allows more than 4 partitions/drive
		by turning to $156 offset after filling those starting
		at $1c6... is this OK and compatible with everything?
		Some program, I forget which, says "Unable to read boot
		sector" when accessing partitions beyond F:.  This is
		with two mac partitions in between E and F also.

	Thanks...  Can anyone send me some source code which will read
		a logical sector from the hard disk through ICD/DMA?

	-Greg

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Message-ID: <1990Feb28.122940.2051@ux1.cso.uiuc.edu>

Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!uwm.edu!ux1.cso.uiuc.edu!cs325ec

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!uwm.edu!ux1.cso.uiuc.edu!cs325ec
From: cs325ec@ux1.cso.uiuc.edu (Gregory Lemperle-Kerr)
Newsgroups: comp.sys.atari.st
Subject: DMA Programming... DLII-Boot Read
Keywords: hard disk dma sector
Message-ID: <1990Feb28.122940.2051@ux1.cso.uiuc.edu>
Date: 28 Feb 90 12:29:40 GMT
Distribution: comp
Organization: University of Illinois at Urbana
Lines: 18