I thought that the point of preinit, and of creating the /programs0 partition, was so that you could put stuff on /programs0 and then it would still be there after an upgrade (assuming you also reinstalled preinit after the upgrade).

Well, I did that. I upgraded the software (no whining that it's RC1, please ), reinstalled Hijack, installed preinit, everything went smoothly as expected. However, I can't see the /programs0 partition any more after this. Did it somehow get erased? Is there more I have to do to make it reappear after installing preinint?