For installation instructions, see
If you configure a cpu server (Configuring a standalone CPU server), you can run it from a terminal by adding a line
console=0to plan9.ini and invoking the virtual machine with option -nographic. Note that you need to configure Qemu networking to allow connections to the virtual machine.
Note that <Del> is <fn>+<Bksp>.
Note, in particular, the warning about VirtualBox being often broken, with behavior very dependent on exact versions of things. If at all possible, you are advised to use a different VM.
VIRTUAL BOX on OS X
I used VirtualBox 4.1.6 (with a matching extension pack). This is the latest version at present(2011/11/24). Installed a stock plan9.iso (made on 2011/11/12).
Other settings may also work.
During installation choose Fossil only (I had lot of trouble with fossil + venti, where it dies very early during distcopy). Everything else was basically defaulted.
Even with just fossil I see fossil write errors once in a while but fossil/flchk doesn't show any errors.
Don't forget to turn on venti on reboot (Yon can use p9p venti -- unless you have a physical machine running plan9, running venti natively on the host is faster). For venti add the following to plan9.ini
Use the numeric ip-address for your venti-server. and telling fossil to use venti & set up a regular snapshots
fossil/conf /dev/sdC0/fossil > fs.cfg ed fs.cfg <<EOF /open/s/-V/-AWP/p a fsys main snaptime -a hhmm -s 1440 . EOF fossil/conf -w /dev/sdC0/fossil fs.cfg
Replace hhmm with the time you want to take a snapshot.