Installation of DOS 4

[Zylstra]

I am trying to install DOS 4 on one of my computers so I can install Windows 3.0...
The problem is this:
During the installation, you need a "select copy" disk...
This requires a 720KB disk. I have tried to format a 720KB disk, but it still gives me the "Defective Diskett" error message.

Any idea why?

I use Windows 98 to format the 720K disk, and it doesnt work at all. My disks are not all defective...

What is the command in DOS to format a disk to make it a 720K disk?

format (and the syntax for Drive A)

[GuruGary]

Try:

Code: [Select]

Format a: /f:720
If you don't have any 720k floppy disks, you can try "tricking" your computer into thinking one of your 1.44 MB floppy disks is 720k by covering up the hole that is not the write protect hole (so that both holes are covered).