I think maybe one of the current
sparc versions
of solaris may drop support of the Ultra 2, so solaris 9 might be a
better bet.
Solaris 10 drops Sun4m support (8? (maybe 9) dropped 4c and 4d support)
Solaris 9 is (comparing apples to oranges, x86 to SPARC) noticably faster than 10
(10 on x86-633, 9 on U1 200E).
I think that Sun only makes available the current release of Solaris :-((((
not very much use to the classic community (be nice if they had older SPARCcompilers,
too)
but I guess (a) they want to show off the latest and greatest technology and (b) it
doesn't hurt if it
stimulates hardware sales.
xBSD is rumored to mount Solaris filesystems R/W, Linux is still experimental (I think-
haven't poked around
in there too much, just select "y" and buld from there.) although it is stable.
Any Solaris 2.x or 7+ CD should mount enought to be able to read the disk.
The Ultra2 is a nice machine- dual-processor capable etc. You can drop in a UPA
framebuffer to get graphics easily
(Creator class graphics are quite cheap and 24-bit).