Lenovo Flex 5i Chromebook 14" SSD Drivers

Hi, i have a Lenovo Flex 5i Chromebook 14" model number:PF4MNJMR , I´m tryinf to instALL Windows via MrChromebox metod, the thing is that everything goes right until i need to select the disk where windows going to be install , but they didn´t appears in the window any disk , i make my own research about it and they all say i need to upload the driver for the hard drive or SSD to ve detected but i don´t find any driver for this computer, even in the support website of Lenovo , there is many divers for the same job but for other models but i don´t find the one for mine, do someone know where o how can i solve this o find me the driver, i will apprecite it to much. Thanks