*BSD News Article 79615


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From: exujbm@exu.ericsson.se (Ben Madison)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Support for toshiba CD rom?
Date: 30 Sep 1996 20:15:32 GMT
Organization: Ericsson North America Inc.
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Message-ID: <52p9p4$6q8@cnn.exu.ericsson.se>
References: <843775992.12909.0@tirnanog.demon.co.uk> <52p17a$13k@anorak.coverform.lan>
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Brian Somers (brian@awfulhak.demon.co.uk) wrote:
> Ian J Greely (IanG@tirnanog.demon.co.uk) wrote:
> >
> > I couldn't get the CD Rom recognised by the install prog so I
> > installed from a Dos partition expecting to enable the atapi support
> > once I was up and running.
> >
> > Now I've compiled a Kernel with the support enabled but it doesn't
> > seem to be picking up my CD ROm... a Toshiba 8X IDE.
> 
> Have you got your CDROM as a slave on your secondary controller ?

I ran into some interesting stuff while switching from IDE to SCSI, this 
weekend.  I couldn't find a SCSI CD-ROM drive to use, so I installed from 
an IDE CD-ROM.  

My initial configuration had an IDE drive as master, and an IDE CD-ROM 
drive as slave, hanging off of the primary IDE controller (wdc0).  I 
added the SCSI controller and drive without a hitch, did the install
(ran into a weird problem with sysinstall filling up my process table
with a bunch of zombie tar processes while installing packages), then 
removed the IDE drive, reset the system BIOS to indicate no drive, and 
set the CD-ROM drive as master on wdc0.

On reboot, the new system found wdc0 just fine, but no CD-ROM drive.  
After double-checking the setup, I put everything back the way it had 
been and tried again.  Everything came up fine.  After playing with
several configurations and reading through the handbook, I found that
I could hang the CD-ROM drive, as master, from the secondary IDE
controller (wdc1).  Everything works fine, now.

Any idea why the CD-ROM drive has to be on the secondary IDE bus when
there's no IDE hard drive present?

--
Ben Madison                                      Ericsson Inc.
exujbm@exu.ericsson.se                    Richardson, TX  USA

Trade my DigiBoard PC/4 for your >= 4x SCSI CD-ROM...?  Email!