Your stuff is definitely useful.

But I am hopeful that someone will take up the challenge of integrating the resizing into minirt.gz to provide resizing as a cheat code. The cheat code maybe is :-

knoppix increment=100

It then will increase the persistent store by 100MB, if only the space is available ( can use the same method which knoppix does to determine free space available). Since it works on the persistent store before it is mounted, the persistent store itself is directly worked on, without needing to make a copy, and so has the smallest space requirement.