How to play backups of ALL PS2 CD-ROM games.
I have only tested this on a 79001 slim with some paper stuffed into the tray sensor.
1. Install free mcboot to your memory card.
2. Install pkd_SM_3.8DVD.ELF to your memory card.
3. Turn off the ps2 and insert an orignial high toc ps1 game.
4 Turn on the ps2 while holding down R1, this will load ulaunchelf.
5. Browse to the swap magic elf and launch it. Once swapmagic gets past the splash screen remove the ps1 game and insert your ps2 cd game.
6. Enjoy playing the games that ESR cant!