37 - Create a DOS Bootable USB drive (using grub4dos) suitable for BIOS flashing - RMPrepUSB
Note that if you have prepared the partition using DOS 6.22 boot volume code, the file IO.SYS must be the first directory entry and this must be followed by MSDOS.SYS (which contains code and NOT text as with later versions). However, if you use RMPrepUSB...