All titles have access to the SD slot, and only one processor can access the slot at a time, complicating this. Unfortunately, due to the limitations of how titles are loaded by IOS, titles cannot be directly launched from the SD card.
With the 4.0 update, SD launching was added. For this reason, it cannot be modified on the vWii without knowing the ancast RSA key. On the vWii, the System Menu is an Ancast Image, meaning it has a format bootable by the Espresso, being encrypted and signed. However, the System Menu does have higher privileges than most titles, allowing it to do things such as updating and deleting titles. All graphical elements when a game is open, such as the HOME Menu, are part of the game disc. While the System Menu detects channels and discs and displays banners, IOS is responsible for the actual launching of the channel through ES_LaunchTitle.Ĭontrary to what may seem true, the System Menu is not an operating system it only runs when a game is not in use.
The System Menu, more commonly known as the Wii Menu, is software shipped pre-installed into every Wii as title 1-2, which allows the launching of games from an officially Nintendo certified game disc, as well as the launching of other titles marked as channels. Not to be confused with System Update or HOME Menu.