* You must modify your distro to not test the status of root directory
(whether it is (is not) writable). For example, Slackware is testing
the status of the root partition during boot and if it's read-write,
it will display a message and will wait for user input. This is something
we don't like, right? Unionfs can't be remounted ro, so I can't avoid
this in linux live scripts. I have to patch Slackware rc scripts (rc.S)
to skip the test. You will need to do something similar for your distro.