Bug#559796: debian-installer: doesn't recognize manual changes to disk contents

[Florian Zumbiehl <florz@florz.de>]

Package: debian-installer
Version: 20090123lenny1

I noticed inside the partitioner that I couldn't create a /boot ext3 with
extra-small journal. So I did that manually instead. But I couldn't figure
out any way to make the installer recognize that there was a filesystem
on that partition now, so that I could have selected for it to not be
formatted again, without rebooting the installer.

Given that the installer can't implement every configuration option one
could possibly think of, I think it would be nice if the manual fallback
would work without too much trouble.