Comment 3 for bug 175772

Note that when not on a loopinstallation, I am setting:

default_kopt="root=$root_device ro"

When in the original code it used to be

kopt="root=$(awk '$2 == "/" {print $1}' /etc/fstab) ro"

My understanding is that using $root_device is safer, since it comes from find_root_device which also parses fstab but is more robust than the awk command (+ handles LABEL and UUID).

Strangely enough kopt_2_6, differently from kopt, did already use $root_device as opposed to the awk code.