Date: Mon, 06 May 2002 14:54:37 +0200 From: Michael Salmon <Michael.Salmon@uab.ericsson.se> Message-ID: <1560000.1020689677@[192.168.0.101]> Subject: Re: [suse-sparc] External SCSI
--On Monday, May 06, 2002 05:43:15 AM -0500 Thomas Bishop
<tb64710@alltel.net> wrote:
> Hello,
> Finally got SuSE7.3 for sparc......very nice! I am in awe of the amount
> of effort and dedication involved in producing such a product. X86 or
> Sparc, SuSE is the best.
>
> Allow me to show my newbiness/ignorance:
>
> I have an ss5 with 64M ram, 110mHz., cdrom, floppy. Suse is installed on
> an IBM 4.2G internal scsi drive (/dev/sda). No probs there. However I
> also have three other 2.1G drives that I wish to put to use. When I add
> one internally (shows as /dev/sdb), it is no problem. I have used the
> drive holder and scsi backplane from a parts machine to house the other
> two drives externally. When I plug this contraption into the scsi port
> on the back of the ss5, the machine locks. I also can't start up linux
> when I boot with these drives already attached. I thought I was making
> the equivalent of a 411 external drive holder when I did this.
> Something must be different. It's my understanding that the backplane
> provides termination? Do I need to do *something* with ID's? And how?
> None of the four drives seem to have any jumpers set. I really could
> use some pointers to docs, or help before I get any deeper or blow
> something up!
The best way to check for attached drives is to stop the boot (top left
function key (usually stop) and a at the same time) and use the prom
commands, in this case probe-scsi. My guess is that you have duplicated
scsi addresses, IIRC the internal drives are 0 and 3. Again IIRC the
internal drives of the SS5 take their addresses from the connector which is
why you can't set them.
The scsi bus is terminated internally but not externally and hence you will
need to terminate the bus. Many drives have manual or automatic termination.
/Michael
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