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

[Mouse]

> 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....

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