There is no mechanism to specify an alternative root partition for a rescue disk to boot off. This makes recovering systems hard, especially when coupled with the lack of system utilities on the cd.
I'm not sure I understand the report. The rescue image boots off of CD or floppy. It does not use any installed partitions. Which utilities are missing from the rescue image which you would like see added?
Closing due to inactivity. Please reopen if you have any more info.