Learning DOS commands or networking.
Once you see that glorious C:\> prompt, you need software. Don't try to browse modern websites—that won't work.
Unless you are restoring a vintage PC that has a CD-ROM drive but no floppy drive, you likely do not need a raw MS-DOS ISO.
Some common uses of an MS-DOS ISO image include:
: If you have a physical copy of MS-DOS on floppy disks or a CD, you can use tools like WinImage or Disk Imaging to create an ISO file from the physical media.