Its use is that on old computers, they don't support booting from the CD - ROM, but booting from a floppy disk is always possible. Make this thing into a bootable disk. After the system boots from the floppy disk, it directly and automatically boots from the CD - ROM. There are only two files inside, but its BOOT area has been modified to boot the bcdl.bin file. After bcdl.bin is loaded, it will call vide - cdd.sys, and then somehow boots from the CD - ROM. I mean, can it be made into an.EXE file, and after general boot, running it can boot from the CD - ROM.
You guys should not make DOS CD - ROM bootable disks by doing it repeatedly on one floppy disk in the future. It's too cramped.
http://bootcd.narod.ru can make bootable disks of CDs that simulate floppy disks of any size. If interested, you can have a look.