This is a quick blog post in order to set things straight. Though all major results from google pointing to the contrary (that linux is uninstallable on a sparc machine) these days I came to a fully functional 480 server while using gentoo sparc autobuilds. Other linux distros (debian,redhat,centos,suse) could not even boot the machine :S
So gentoo is your friend.
If for any reason anyone is intrested on the specifics of the “operation” please write a follow up 