[rescue] CD ISO, SunOS 4.1.4 & Qemu SS-5

[Richard]

Hey folks

FWIW back in the day (miss those days) when I put approx 100+ sun4 machines
out for a client (mix of IPX/IPC/SS5/SS10/SS20)  in the wild with various disk
& tape configs I recall always having to check the scsi IDbs. it seemed like
every install required checking and making sure.

And yes sunos4 was fixed IDs unless you recompiled
Boot ID3
CD-ROM ID6
Tape ID4 (?I think it was or was it 5)

Hope that helps

Cheers

Richard

Sent from my iPhone

> On 19 Nov 2020, at 19:58, Peter Stokes <peter at ashlyn.co.uk> wrote:
>
> o;?Hi
>
> Just my two penny worth, but suspect the ID3 was due to the move from
external
> to internal drives. Up to that point all drives were external and normally
> were set to 0 for the boot drive. When they introduced internal drives
maybe
> they thought leave the externals as is to allow adding on to the newer
> systems?
>
> I know you could always change the external Drive ID, but some needed to be
> opened up to change physical jumpers if I remember correctly.
>
> Peter
>
> Sent from my iPad
>
>> On 19 Nov 2020, at 04:16, Mouse <mouse at rodents-montreal.org> wrote:
>>
>> o;?
>>>
>>> Sparcs were fiddly sysmtems with where things were expected to be on
>>> the SCSI bus.  ID3 was the default root drive, [...]
>>
>> This depends, though I'm not sure what exactly it is it depends on.
>> ROM firmware version, maybe?  Machine type?
>>
>> Some systems default sd0 to ID 3 as you say (with sd1 at ID 1, sd2 at
>> ID 2, and sd3 at ID 0); others have sd numbers equaling SCSI ID numbers
>> for 0-4 by default.  There may be other mappings, but those are the
>> only ones I recall seeing personally.  I never learnt what led to their
>> swapping 0 and 3 on some systems....
>>
>> /~\ The ASCII                  Mouse
>> \ / Ribbon Campaign
>> X  Against HTML        mouse at rodents-montreal.org
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