Originally posted by btmiller
N.B. sometimes it's impossible to avoid running new code as root, for instance when developing system programs (or even kernel programs, which run with kernel priviliges). In these cases, it's a good idea to test the code on a separate machine that you would not mind reinstalling if something goes wrong.
In this context :)
is starting to look quite promising,
specially for linux as both host and guest OS ;)
Create a 3 GB disk-img, install a minimal dev-system,
grab a tgz copy of it and - voila! :)
My qemulated Slack (to a command-line login) boots
in only 15s more than the real thing on the same box.