If mounting a CD filesystem as a root image, at least call inittodr.

If mounting a CD filesystem as a root image, at least call inittodr.
Most filesystems have a last modified date that is supplied,
however since that is not available on iso9660 could image creation
time be used instead? Currently it supplies 0, the beginning of time
as the parameter to inittodr.
This is so that when installing from a CD image, the file or directory
timestamps will be sane, not beginning of time.