hello. first i want to apologize for my english because is not so good. my problem is next, i want to buy Rock pi and use nvme ssd for operating system… i read a lot forum and see i need for this for start my os i need to put bootloader on sd card, emmc or spi flash, is this correct? Or this is posible exclusively and only whit spi flash? is spi flash is not nacessary which version of rock pi i need to buy, is this version 1.3 or i need 1.4 ( i am looking for buy Rock pi 4 model B 4 gb)? and i can not found tutorial how can i install os on nvme with bootloader on sd card or emmc, i found only installation on/with spi flah and nvme ssd?
thanks for your time and help