If it’s read-only it does boot up however. So this got me thinking, back in the Sheepshaver days when trying to boot from an ISO as a disk file, it fails the same way because the image is read/write. The system software on the startup disk only functions on the original media, not if copied to another drive. I copied the System Folder from the CD onto the hard disk, and told the classic applette to boot it, and it updated some system files, and then gave me this fine message:
Now the OS 9, is an install disc, not one of the recovery discs, and naturally the aluminum powerbooks don’t boot OS 9, so I’m kind of out of luck for getting Classic working, or so I had thought.
I did luckily buy some CD’s from a user on reddit a few months ago, so I had 10.4 install DVD, and an install of 9.2.2 for the emac. I just got another PowerBook, and the disk had been wiped by the prior user, and all it did was boot up to the blinking mac face.