Posted Sun Mar 21, 2010 5:01 AM
What you are doing sounds correct, from what you have said. I have done this many times over the past few weeks backing up my entire collection to disk images.
You shouldn't have to format the ATR first if you're using the MyCopier program (as you've stated you are).
You don't have the lock box on the right of the disk image line in APE checked, do you? If so, uncheck it so the write-protection is off. Off should be the default though, so I can't imagine this being the case.
The only time I had this issue was when I had an incorrect size ATR made for the disk I was trying to copy. When MyCopier is reading the source disk, look at the top of the screen, and it will tell you the density of the disk you are copying. If it says SINGLE DENSITY, then the default ATR settings you are using are correct. If it doesn't say SINGLE DENSITY, then change your ATR creation settings.
If nothing else, try ProSystem. Be sure APE is shut down (really shut down, from the "file->shut down" selection), or start it from within APE so it shuts itself down. Then, be sure your Atari computer is turned ON if it's physically attached to the SIO chain, even though you won't use it for this. Otherwise, unplug it from the SIO chain. Once it's loaded up, it should be self-explanatory if it senses your drive. Create the .PRO image which should work, and if it doesn't, then I'm not sure what the issue is.