(This post was suggested by issues raised in the previous post...)
Offhand, I think I run the following distro's/OS's:
Windows XP
Windows 2000
Windows Server 2003
Windows 98
Mac OS 8.6
Mac OS 9.0
Mac OS 9.1
Mac OS 10.4.x
OpenSUSE Linux
LinuxMint Linux
CentOS Linux
FreeBSD Unix
NetBSD Unix
I have many more OS's, but all of the above are actually installed on hardware, about 90% of which works.
I think I've disabled comments on this post. At least I hope so.