ReadyNAS OS 6.9.3 | Run on existing x86 (4.2) #notsupported

Thanks for starting the new thread, the old one was getting long and hard to follow. I'm looking at taking the plunge with OS6. I just acquired another Pro to replace my Ultra4 and then let the Ultra be relegated to backup duty and replace my last sad NV+. Before I do all that, I want to experiment with OS6 and see if I want to move there. I may start with the VM so as not to have too much to undo if I really mess things up.

I have seen that the latest version of the OS has the right temperatures and fan controls for "some legacy units". Is there a list? I am specifically interested in the Ultra4 and older Pro Business Edition (not newer Pro 6, if it matters).

I have seen some things that need to be done via shell. I can get the VGA connector for the pro, but not the Ultra. Is root SSH enabled by default in OS6, or is there something I need to do to add that?

I am far from a Linux guru. I've used real Unix and even Multics, but the Readynases are the only Linux boxes I've owned. With copious Googling, I've figured some things out, but it would be nice to have a comprehensive list of useful utilities and the appropriate app-get and other commands to install them since the add-on concept is dead and the marketplace is off limits to us. Starting with the available add-ons for the X86 models would be great.

And a special thanks to the pioneers who blazed the trail. Your work and the fixes in the OS itself finally look stable and ready for me to get my feet wet.