@popatim-my frnd i also face robinkang's problem..i also have a sony pen and when i try to open my pen it says "please add a disk into removeable disk (i)"
i serch many softwares..bt i couldnt...so plz help me..
i saw that u pick the solution of robinkangs answer..bt what is jetflash?i dnt knw how to repair my pen..plz help me