Did you receive any directions with these disks?
Are these from EMI?
Bridgeport used DOS 6.20.
EMI uses DOS 6.22.
DOS 6.20 full version is 3 floppys. The EZTARK used only a few necessary DOS files.
A dos utility disk may have FDISK and FORMAT to prepare a mass storage device for DOS and software. Do a DIR of that disk to see what is on it. It has to be bootable to be useful. Cannot advise you further without knowing what you have.