I'm trying to install Plan9 on an older Pentium III system. I think the
hardware is supported.

If I boot off of the CD, I get "PBS1..." and then it starts accessing
the floppy drive, and sits there.

If I boot off the floppy, with the CD in the CDROM drive, I get to the
"boot from:" prompt. It sees sdD0!cdboot, so I enter
sdD0!cdboot!9pcload.gz, and it starts to boot. The last two messages
that flash by are about my ethernet card being detected, and the amount
of RAM found, and then...the system reboots

Any idea what to look at next?