How to Create a BT4 USB disk boot disk

How to Make BT4 U disk boot disk required software: ① UltraISO; ② grubinst; ③ grub4dos; ④ bt4-pre-final.iso 1. open the bt4-pre-final.iso file with ultraiso, select write hard disk image, write in USB-HDD ++ 2. open the grubinst software and select the USB flash drive correctly in the "disk" single disk, select "do not save the original MBR", "do not search for a floppy disk at startup", and "Do not boot the original MBR" in "options", and click "Install". press enter to complete 3.decompress the grub4dos file, copy “grub.exe "and" grldr "to the root directory of the USB flash drive 4.splash.xpm.gz, and menu. copy the lst to the USB flash drive root directory. after the USB flash drive is created, you can see the menu after selecting the USB flash drive in the bios boot item. content in lst.