MacOS 9 configuration suggestions?

[Benjamin Herrenschmidt]

> MacOS doesn't like read-only boot volumes. Numerous applications
> will complain/error when the pref folder is unwritable.

It should be fairly easy to implement copy-on-write images,
like qemu does iirc. Basically, you have a "master" image,
and per-user images. The per-user ones start empty, then
each time a block is written to, if it's not already in the
per-user image, it's copied from the master, all writes happen
only on the per-user image.

Ben.