hd driver scsi driver

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Date: Fri, 02 Feb 2001 11:34:04 -0800
From: John Gray <johng@InterSAN.net>
Subject: Re: PANIC on the street of St Albans
References: <1svk7tk4rcdd8sqof96a1qucc2hc7sq8pf@4ax.com> 

Rob S wrote:

> Hi all,
>
> Any ideas on what's causing the following:
>
> PC, Symbios SCSI card, IBM SCSI disk, OS5.0.6
>
> PC is loaded (with relevant slha BTLD), running fine for days. PC gets powered off
> each night, and powered on each morning. All OK, until this morning:
>
> halfway through boot, the bit where the slha driver gets loaded didn't happen, and
> then
> WARNING:hd: no root disk controller found
> a boot-time loadable driver may be reqd
> PANIC srmountfun Error 19 etc
> ** Safe to Power off **
>
> so it looks like for some reason it didn't "register" the slha driver.
> I then pressed a key to reboot, with the same results. And then again. So I powered
> off, and then on straight away.
>
> This time it worked fine, and booted OK.
>
> Apparently this has happened once before with this PC, a few weeks ago. Same symptoms
> and solution.
>
> Help?!
>
> regards
> __
> Rob

Hi;

Just a clarification of the error message that you are seeing.
The "WARNING:hd: no root disk controller found" is telling
you that the open for the root device failed nothing more.
The SCSI registration happens much earlier and if you see
a %adapter line for the Slha driver during boot up it registered
itself.  The hd driver is searching for a successful open so it
can assign the correct disk interface to major number 1.

Good luck
-john

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