7.00 DOS Operating System IBM PC-DOS 7.00 (SETUP Disk 1) PC-DOS 7.00 (SETUP Disk 2) PC-DOS 7.00 (SETUP Disk 3) PC-DOS 7.00 (SETUP Disk 4) PC-DOS 7.00 (SETUP Disk 5) PC-DOS 7.00 (1.2M Disk) PC-DOS 7.00 (1.44M Disk)