RedHat 6.0 Sparc will install and boot my default 2.0GB root partition.
After upgrading to 6.1 sparc, it says Buggy Old PROMs..
I had to create a smaller root partition (~1GB).
Why did it work on previous versions of Sparc/Linux.. but not 6.1
It depends on what version PROM your SPARC has. All UltraSPARCs are capable
of booting from any size partitions... but the sun4m's or sun4c's can only
boot from the first 1GB or 2GB, depending on the version.
As an example, I have an SS10 that used to have an older PROM only capable
of booting from the first 1GB... but I have a 4GB disk. I did an install of
RH 6.0 on it and it booted fine while I was using little of the disk. Then
I went and copied a pair of CD ISO images to my machine and later built a new
kernel and the machine wouldn' boot anymore. Why not? Because the new image
was on the disk past the first gig somewhere.
So, that limitation is for you protection...