Every Mac from Apple now comes with MacOS 9 and MacOS X. You need MacOS 9 for Classic support in MacOS X. So even if the Mac can't boot into MacOS 9 it still comes with MacOS 9.
But note that there may not be separate system disks. Ie. on the new Macs, even these dual boot Macs, MacOS 9 is usually on either the MacOS X install disk or the restore disk (I can't remember which). There is no MacOS 9 system disk.