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Article #304

Cross IDE Problem

#304
From: whittengetcHOSTNAME Gary Whitten
Date: Fri, 22 Mar 1996 00:00
33 lines
2631 bytes
I have had many problems with my new Linux system after installing RedHat 2.1
and 3.0.3 (which uses both IDE controllers in my system for the first time).

Any time I try to do anything, with Linux that references devices on the
other (with respect to Linux root disk) IDE controller the system eventualy
hangs. Devices are always recognized correctly and sometimes mount correctly,
but after enough communication (i.e. taring large groups of files) the system
hangs. It even hung when I tried a re-instal of both 2.1 and 3.0.3 when the
CD Rom was accessed, and when I run lilo, it appears to run fine, indicating
that both linux and dos were installed, but I can't boot - it stops at "LI".

These problems don't occur when the CD Rom or DOS disk share the same IDE
controller as Linux root - but then I can't even partition my second Linux
disk since it is on a different controller. It also doesn't seem to matter
which controllers I use (0 or 1) the only thing that matters is accessing a
device on an IDE controller different from the Linux root disk. 

 I have tried to follow the IDE/ATAPI rules as best as I can interpret 
them. My latest IDE setup is:

	/dev/hda : DOS boot disk (Master), IRQ 14 (Western Digital 31000 1Gig)
	/dev/hdb : CD ROM         (Slave), IRQ 14 (Sony CDU55E)

	/dev/hdc : Linux Root    (Master), IRQ 15 (Seagate ST51080A 1Gig)
	/dev/hdd : Linux          (Slave), IRQ 15 (Quantum Lightning 730A)

 Is there something wrong with this setup? Have I broken any rules? Or is 
there some problem with certain IDE controllers - mine are resident on 
the mother board.

	Thanks for your time.
		Gary Whitten
		whitteng@acoast.com
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From: whitteng%/etc/HOSTNAME (Gary Whitten)
Subject: Cross IDE Problem
Date: 1996/03/22
Message-ID: <4ivdq5$fnh@clarknet.clark.net>
X-Deja-AN: 143781032
content-type: TEXT/PLAIN; charset=ISO-8859-1
summary: Accessing data on devices on IDE other than Linux root results in hang
organization: Clark Internet Services, Inc.
mime-version: 1.0
newsgroups: alt.uu.comp.os.linux.questions,clarknet.linux,comp.os.linux.hardware,comp.os.linux.setup,dc.org.linux-users