We just had to reload our OS on a SPARC10 and found that the CD version
of the OS was a slightly earlier version of SunOS (4.1.3 vs 4.1.3_U1)
than had been originally on the machine. I believe these versions
correspond to Solaris 1.1 and 1.1.1.
Since these versions are so old, SUN no longer supports them and I'm
having trouble finding a description of the difference between these
systems. Can someone point me to a reference?