kaikal(a)MICROSOFT.com says, ... My best guess is that maybe you have a 13-sector (DOS 3.2) disk controller and one 13-sector disk (the one that works), and the rest of your disks are 16-sector so the 13-sector controller doesn't know what to do with them. Unfortunately I can't remember where to peek to find out the DOS or controller version number, so I don't know how you could verify this. The other alternative is that if your Apple II+ has less than 48k of memory, the other disks may be expecting a 48k system and loading DOS into a part of memory that doesn't exist on your computer. The Zardax Utilities disk may be one with a relocatable DOS image on it (a "master" disk) created with "MASTER CREATE" and the rest are just plain fixed-address disks. This would certainly explain why random junk was getting loaded into video memory instead of where it belongs. eric

On Tue, 27 May 1997, Kai Kaltenbach wrote: Three possible problems: a) the disks got scrambled by a magnetic field or are just old b) your disk drive speed is out of whack and needs to be adjusted. You need to find a copy of Copy ][ Plus (versions 3.0 and higher?) which includes a disk speed alignment program. You need to open up the disk ][ and use a small screwdriver to tweak the pot controlling the drive speed per the on-screen display of Copy ][ Plus. c) the disks you are trying to boot require an amount of memory that your ][+ does not have. Older ][+ systems only came with 16K, upgradable to 48K and 64K with a "language card". The disks you are trying to boot may require 48K, and you may only have 16K. Pressing RESET alone on the ][+ will suffice to break into the basic prompt. Sam ------------------------------------------------------------------------------- Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass