Linux: preparing a Raspbian cross-compile root

Follow the instructions in the mounting a filesystem post, then:

mkdir -p $HOME/raspbian/2012-10-28-wheezy-raspbian && cd $HOME/raspbian/2012-10-28-wheezy-raspbian

Copy files as root (the root image contains device special files that will cause problems for a regular user):

sudo cp -r /mnt/* .

Own the file hierarchy (my username is ‘user’ and I’m in the ‘user’ group):

sudo chown -R user:user *