Have you tried shutting down the machine with the CD (or DVD) already in the drive… and then startup, holding down the Option key… to see if it will then allow booting from it? (Sometimes the machines will eject them before boot when attempting this, so you must be ready to quickly push the disc back in before the machine completely "Option" boots.) If the disc then "shows" as an available boot source, select it and then hit enter (or the displayed on-screen arrow).
OR… also, with the CD/DVD in the drive and machine shut down, boot into Open Firmware (holding down Option and Command and the “o” and “f” keys at startup, until the Open Firmware “text screen” shows. Then (with the CD/DVD already in the machine, before Open Firmware startup)… type: "boot cd:,\\:tbxi" (exactly as shown, without the quotation marks) at the prompt and then hit enter.
If none of the above works for you, I would begin questioning just how the Mac OS 9.2.2 Universal Install CD - or DVD was created. (Also assuming that OS 9 drivers were installed on your OS 9-targeted second partition, at the time of format/partition.)
AND, if you’ve another Mac… try reading (and maybe even booting from) your OS 9.2.2 Universal Install CD on that other Mac, to check the “write” of the CD or DVD.
Good luck to ya.