To disable the custom title screen in the Ice and Fire mod you need to change its configuration. Here’s how you can do it:
iceandfire-client.toml..minecraft/config folder (or in the equivalent configuration directory if you’re using a custom launcher or modpack).iceandfire-client.toml.# Whether to display the dragon on the main menu or not [default: true]
B:"Custom main menu"=true
B:"Custom main menu"=false
iceandfire-client.toml (this is the client-specific configuration, not the common one).This method has been confirmed by users in the community—for instance, several users on the Feed The Beast forums mentioned finding and changing the "Custom main menu" option in iceandfire-client.toml solved their issue. (See discussion where a user noted, “set the ice and fire config to not display it in iceandfire-client.toml” and that the file is located in the config folder.) citeturn0search1
Following these steps should disable the custom main menu provided by the mod so you can use your texture pack’s own main menu background.