old_hitech
Member
I have an original Macintosh that has its memory expanded to 512K. I had a number of 400k disks (Finder 4.1 and Finder 5.1) that work ( read and write files) on this computer.
I also have a Macintosh Plus computer that has its memory expanded to 4MB. When I startup the Mac Plus with one of the 400k disks it works fine. I just opened the disks in the Finder and, in some cases, opened an application MacWrite or MacPaint and previously created document (created on the original Macintosh). I did not modify the file on the Mac Plus. I was just happy to open the files.
Now, when I startup these 400k disks on my original Macintosh they boot just fine and the Finder desktop is shown with the 400k disk icon on the desktop. When I double click on the disk icon I get a bomb message box saying
Sorry, a system error has occurred. ID=02.
There is a Restart button that can be selected to restart the computer. All the disks that had been booted on the Mac Plus give this error message.
Why did this happen? I thought these 400k disks could be used on both the original Macintosh and the Mac Plus interchangeably.
Is there a way to get these 400k disks to work again with my original Macintosh computer?
I also have a Macintosh Plus computer that has its memory expanded to 4MB. When I startup the Mac Plus with one of the 400k disks it works fine. I just opened the disks in the Finder and, in some cases, opened an application MacWrite or MacPaint and previously created document (created on the original Macintosh). I did not modify the file on the Mac Plus. I was just happy to open the files.
Now, when I startup these 400k disks on my original Macintosh they boot just fine and the Finder desktop is shown with the 400k disk icon on the desktop. When I double click on the disk icon I get a bomb message box saying
Sorry, a system error has occurred. ID=02.
There is a Restart button that can be selected to restart the computer. All the disks that had been booted on the Mac Plus give this error message.
Why did this happen? I thought these 400k disks could be used on both the original Macintosh and the Mac Plus interchangeably.
Is there a way to get these 400k disks to work again with my original Macintosh computer?