Re: Booting 10.0 from CD on Sparc IPC fails - Data Access Exception

[Julian Coleman <jdc%coris.org.uk@localhost>]

Hi,

> yes, my swap partition is beyond 1G. But was that really the limit? Why
> doesn't CD-ROM then work
> 
> Does the old ROM have no limit? seems strange. I also remember the limit
> being 2G and 4G depending on the system.

The limit varies depending on the machine.  From the sparc/boot man page:

  On sun4 and early PROM version sun4c machines, the PROM can only boot
  from the first 1Gb of the disk.

  On later PROM version sun4c and early PROM version sun4m machines, the
  PROM can only boot from the first 2Gb of the disk.

  On later PROM version sun4m machines, the PROM can only boot from the
  first 4Gb of the disk.

I was a bit vague when I wrote this because I don't know which revisions
of the PROM's change the limit from 1 to 2Gb and from 2 to 4Gb.  Also, the
CD is 700Mb, so always within the limit, even for the oldest Sparcs.

Regards,

Julian