SCO defbootstr question for filePro server

[Larry Hoover]

On 4/11/2016 8:57 AM, Larry Hoover via Filepro-list wrote:
> This is more of a SCO Openserver question, but the continued existence
> of a filePro application depends on this server, and this forum has a
> lot of knowledge in SCO.
>
> I have a customer running SCO Openserver 5.0.7 who has a fried
> motherboard, an Intel Server Board G7ESZ with two on-board SCSI
> channels, one a ultra160 and the other regular SCSI.  There is a cage
> with two IBM drives in RAID.  I replaced the mother board and it boots,
> but crashes when it tries to load SCO.  It gets to the host adapter part
> of the boot and reports an error:
>
>   "no root disk controller was found.  A boottime loadable driver may be
> required.  dpti: HA0  Channel 0:  ID 1 2 3 4 ..   Panic Srmountfun error
> 19 mounting rootdir 1/42"
>
> I think the new motherboard is not compatible somehow with the SCSI
> drivers built into the boot string.  Channel A (ultra160) does not even
> find the operating system.  Channel B (regular SCSI) attempts to load
> but reports the error above.  The SCSI channels use different interrupts
> than the old one did, but there is no way to change this.
>
> Any ideas such as defboostr's to try?
>
> Thanks in advance,
> Larry Hoover
>
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I was able to solve it by using the add-in SCSI card that was driving 
the tape drive, and disabling the on-board SCSI channels.  I can't 
believe it worked, it was the result of many random attempts and boot 
strings.  But persistence paid off.  Thanks for the help.  And, yes, I 
did get the exact same mother board but the SCSI channels had different 
interrupts and base starting addresses.