To format a Plus D disk image
If the Plus D disk drives window is hidden, click Disk Drives on the View menu.
Click the disk drive containing the disk you want to format.
Click the Format toolbar button.
Click OK when asked if you really want to format the disk image.
Note
Disk images cannot be formatted if the image is currently in use (ie. the drive motor is on and the disk controller is busy).
You can also use the G+DOS or Uni-DOS
FORMATcommand to format disk images.