USB backup device failed

[milo148725]

hi, @MrChromebox i have a lenovo 500e chromebook and im trying to run the chrome os firmware script v2023.03.18. Im not that good with tech and computer stuff so please tell me if im missing anything. i am trying to make my chromeos run windows 11 and so far ive gotten almost there with the crosh that makes you hold the refresh, and ctri alt right arrow, but when i got down to the part after i accepted all of the risks, it brings me to a message that i cannot bypass and says, "connect the usb/sd device to store the firmware backup and press enter to continue. this is nondestructive but it is best to ensure no other usb/sd devices are connected." i have tried to press enter without the usb, and that did not work. then i tried with a usb (fat32 format) in and it says this: "usb backup device failed to mount; cannot proceed" and then says to return to the main menu. My usb is 128gb and FAT32 and I am not really sure what is going on or how to bypass this. i have tried with other usos and none work. please help me, thank you! :)