So, I seem to have mucked up my migration. Moving from an HD to an SSD (older 2008 MBP still on SL 1.6.8. at first, I built the OS on the SSD, and then I transferred from the HD in the system the base user to the SSD, sans a bunch of photos, music, movies, and desktop and downloads (this was the big meat of the files) now that I reboot into the SSD, with it not happily installed in the old MBP, I have a DIFFERENT user in there, and ANOTHER user. not really sure what has happened. The apps are fine, mail is fine, most things are fine, but I can't really get rid of the others users. (I've gone into preferences to delete them, but one time the system wouldn't even come back up and i WASN'T in the root user.) So, what is the best way to PURGE ALL USERS, and get back to a fresh install (without doing another install actually) and just migrating in my old user from the now external HD? Is there a way to PURGE, flush, and then re-instal/migrate?