BLK0SAVE, by Guy T. Rice Bob Garth recently pointed out that one of the most likely places to hide a virus, or at least to patch one in, is block 0, the bootup code, on your ProDOS disks. I don't know if such a virus has been made yet, but this program will protect you from one if it has been or will be developed. Put this into your SYSTEM/SYSTEM.SETUP directory. Now, everytime you boot up, it will check the boot code to see if it's been modified. If it has, it will tell you so, fix block 0, and then reboot. (It lets you know, so you might possibly be able to figure out which program did it. If you just downloaded and tried out a new program, and then this message pops up, LET US ALL KNOW IMMEDIATELY!!!) It would probably be wisest to rename this program to something unique. That way, a virus install program can't delete or modify this file. (For example, you could rename BLK0SAVE to something like ZSDFSLKJHERSUR.) Comments? My GEnie mail address is GUY.T.RICE