@JNABK: You forgot the users, which use Auto-Boot-ELF. Those are than also restricted to use another app, to start the disc (it will work, if it is an app like ule, which can start discs, but what about ELFs like DMS-HDD-Explorer, for example,....), or the hacked OSD, as suloku said.
All my suggestions have a sense. ^^
No need to rip out more.
@Jimmi: Yes, please rename it to "Fastboot (Disc)", or similar.
Modchip-Creators also name it this way and it is commonly known (what it is).
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