You canīt boot a CD without a modchip, a swap-disc, a retail-game, or FMCB+ESR.
You can try to find someone next to you, which has the same MG-Region (last 2 digits of the SCPH-Code) which can run homebrew, or backups and hope for an install.
If you have a Retail-Game, you can do one of 2 swap-methods.
Both involves reading and modifying an Image of your Retail-Game and 1 swap-method is a bit harder (to do), than the other...
For both methods, you need to do the "tape&tissue-mod" on your slim.
1. If your game has Multiple ELFs, search for the "007 hack", or "007 agent under fire exploit",...
2. If not, there is only the "time-swap".
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux