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3.4.2 MS-DOS and Windows Considerations

When you are using vio on an MS-DOS machine, you may specify a diskette drive with the "-f" option. If you do so, then you must specify the type of diskette you want to write. To do this, specify one of the following letters immediately after the drive-name's colon:

H 1.2 MB High-density 5.25"
3 1.44 MB High-density 3.5"
9 720 KB, 9-sector, low density 3.5"
8 320 KB, 8-sector, low density 5.25"

If you leave this letter off, then vio will assume a low-density, 360 KB diskette (which can be either 3.5" or 5.25").

Note that you may not specify a diskette drive with redirection (DOS does not allow it). Also note that if you write directly to a drive, any files on that drive will be lost. In addition, all directory information will be lost. The diskette will not be usable by DOS until it is reformatted.