On Mon, Oct 14, 2024 at 10:31 PM Steve Lewis via cctalk < cctalk@classiccmp.org> wrote:
> > All my bubble cartridges have MS-DOS 2.00, and one of the cartridges has > SYS.COM. So... I did a FORMAT /8 on another x86 system and formatted a > 320KB disks. Then I put that disk into the PC-5000, then did a SYS C: from > the bubble cartridge that has SYS.COM, and it said "System transferred" > (and CHKDSK.COM agrees, there are 2 hidden files). I added COMMAND.COM to > the disk, but it (the PC-5000) still won't boot from that disk. I turn > the system off, remove the bubble cartridge, power on the system with this > "new" 320KB disk inserted... and it says WARNING: NON-SYSTEM DISK. > Is it possible to try formatting the disk from the Sharp PC-5000 itself? It's possible there's something special about the boot sector on the bubble carts. You might try reading the raw sectors off of it and examining the boot sector to see if it's doing something special to allow it to boot, then maybe copy that code into the boot sector on the floppy. Sellam
