What you do is hold all three button combinations for at least 3 seconds and confirm delete.
Up+SELECT+B all together
You lose all of your pokemans
See the Related Link for all the data.
there is none but the only way to get all ribbons is to use pokesav and make a Pokemon that has all ribbons (note there is codes to get all ribbons but they delete ur Pokemon)
You would need to transfer all your Pokemon back to your DS game, and delete the save data in the Wii Options menu (Wii Options -> Data Management -> Saves -> Wii -> My Pokemon Ranch -> Delete). However, if you delete your game save, you will lose any Pokemon left on your My Pokemon Ranch game.
You will delete all of your saved data Pokemon and items
buy the Pokemon platinum book
Yes you can delete data by one of two methods: Begin a New Game and select the Save option on the Start menu and overwrite over your current file, On the title screen hold Up, B, and Select to pull up the delete all saved data screen. Choose Yes for all the options to delete your data.
go to the home menu then go to other then press delete save data then it will say OK are you sure? press yes it will say all of your saved data will be earsed is that ok? press yes then it will be deleteing it then it says your data has been deleted ( PS all i have is Pokemon mystry dungon expores of sky o_0)
by delete data it means delete ALL data. short answer. NO
There is no cheat for catching all the Pokemon on Pokemon platinum. it's all down to hard work and persistence.
2 ways: Press B Up and Select on the title screen to bring up the delete all saved data screen say Yes to confirm you want to delete it. Also if you choose new game press start during the game and choose Save say Yes to all questions to delete your other data.