You can add a simple text menu with no formatting or multi-coloured text, by using a simple .help text file.
Or follow these instructions to add your own multi-colour, multiple menu Help menu - similar to the F1 Help menu in E2B.
For instance, you can provide instructions on how to use your E2B USB drive.
1. Copy one of the \_ISO\e2b\grub\XXXX\F1.cfg language help files to the \_ISO folder (e.g. \_ISO\e2b\grub\ENG\F1.cfg -> \_ISO\F1.cfg).
2. Rename it as MyHelp.cfg
3. Create a new .mnu file \_ISO\MAINMENU\MyHelp.mnu, containing the following contents:
title MyHelp Menu\nThis is my help menu
title ^Ctrl+F1 MyHelp Menu [Ctrl+F1]\nThis is my help menu\n Use it to get help on how to use the payloads
4. Now edit the \_ISO\MyHelp.cfg file as required and change all the menu entries and text, etc.
Test using \QEMU_MENU_TEST (run as admin.cmd). You can edit the MyHelp.cfg file, save it and then press F8 to reload the new menu to see the changes - there is no need to quit QEMU and then start it again.
Add a different splashscreen by adding to the top of the MyHelp.cfg file:
Then change the F8 menu entry to:
iftitle [if "%GFX%"==""] ^F8 Main Menu [F8]\nGo back to the Main Menu
This causes the Main Menu to be reloaded and the Main Menu wallpaper to be displayed.
If you want the help text to be displayed over the top of the wallpaper - see here for instructions. Basically you must add the line:
call Fn.70 3
under each menu entry just before the clear command.