I am installing Solaris 10 on a Sun Ultra 5.
I was able to study on the Sun web site how to change the boot device in Solaris and then logged into this government surplus machine and started to install Solaris 10 on my 40$ Sun Ultra 5 machine. It has a Sun Sparc 400 Mhz processor with 256 MB RAM. But I am going to install another 256 MB of RAM so brought up the swap to 1024 MB in size. The machine has a 20 GB hard drive. It is my first Sun Solaris Machine.