Select 'FAT32 or NTFS' under File system→ go 'start' to begin How to create a BIOS booting flash drive Plug in the USB flash drive, open a folder and find, right-click on the USB flash drive and select Note: All of the data will be wiped when performing the disk formatting, please backup your data before this operation. NOTE: USB Flash drive capacity needs to be 32GB or Below, M-FLASH only supports FAT32 formatĪ standard power charger How to format a USB flash drive to FAT32 Before you start the process make sure you have: Please follow the instructions below to update BIOS with M-Flash.