用USB隨身碟開機(DOS, FreeDOS)

1. download and install "Virtual Floppy Drive (VFD)"
   
2. download FreeDOS fdboot.img (or any other kind of boot image)
   
3. open the .img file with VFD and copy to some directory
   
4. download and install "HP USB Disk Storage Format Tool"
   
5. format USB dirve with bootable option; point to the directory in step 3 for boot files