Requirements to Run SETUP /F from 3.5- to 5.25-Inch Drives (73414)

The information in this article applies to:
    Microsoft MS-DOS operating system 5.0

This article was previously published under Q73414


If you are using 3.5-inch Microsoft MS-DOS 5 Upgrade disks and you try to run SETUP /F and the following conditions are true, the installation program fails and generates one of the following messages:
    The target disk drive is 1.2 MB.
    The target disks are low density.
    the target disks are unformatted.


The SETUP /F program requires the target (destination) media to have a capacity greater than or equal to the source media. This means that 360K disks cannot be reliably used to create MS-DOS 5.0 floppy disks from the 720K MS-DOS 5.0 upgrade disks. The problem occurs because it is currently impossible to detect media type of an unformatted floppy disk.

If an unformatted 360K disk is used in a high-density drive, the installation program tries to format the disk as a 1.2 MB disk. This does not work reliably.

If the 360K disk is already formatted or the disk drive is low density, an error message is generated, and the Setup program is halted.

Modification Type: Major Last Reviewed: 11/22/1999
Keywords: KB73414