From now Dyson can be installed from LiveCD.
Get the lastest here http://ftp.osdyson.org/iso/
There is an installation guide with screenshots.
LiveCD includes mc (MidnightCommander), truss, mdb, dtrace, wget, lynx, vim, bash-completion, drvtools (to manage illumos kernel modules).
Note that Dyson does not include closed source modules. If you need it you have to download it by yourself from http://dlc.sun.com/osol/on/downloads/20100817/
See the instructions by Jason Upton: http://lists.osdyson.org/pipermail/dyson-devel/2013-April/000041.html