Jeff Quade ([log in to unmask]) wrote: : We're installing 5.0 of MPE/iX. In reviewing the "backdate" process, : it appears that if you want to back off of 5.0, you must reinstall : 4.0. Is there no simpler way, like renaming files and rebooting? Or : rebooting from a different LDEV? We are a bunch of IBM Mainframe support : personnel who've been given an HP 3000 to support and we don't have a : firm grasp on MPE yet. Any help will be GREATLY appreciated. There is no "simpler" way to backdate. The backdate instructions exist to assist you in accomplishing a backdate should it become necessary. It is not really a recommended operation. The reason the backdate process is necessary is that the update from 4.0 to 5.0 made some significant changes to your system. Simply purging a few files will definitely _not_ allow you to run 4.0 again. If you attempt this, you can expect to have serious problems on your "4.0" system and may even end up requiring a reload. If you think the backdate process is too onerous, you haven't had to do a reload recently... Please, please follow the backdate process if you must backdate! Steve Elmer Software Engineer HP - CSY [log in to unmask]