Floppy 3 Mode Support

Common Options : Disabled, Drive A, Drive B, Both

Quick Review

For reasons best known to the Japanese, their computers come with special 3 mode 3.5" floppy drives. While physically similar to the standard 3.5" floppy drives used by the rest of the world, these 3 mode floppy drives differ in the disk formats they support.

Unlike normal floppy drives, 3 mode floppy drives support three different floppy disk formats - 1.44MB, 1.2MB and 720KB. Hence, their name. They allow the system to support the Japanese 1.2MB floppy disk format as well as the standard 1.44MB and 720KB (obsolete) disk formats.

If you own a 3 mode floppy drive and need to use the Japanese 1.2MB disk format, you must enable this feature by selecting either Drive A, Drive B or Both (if you have two 3 mode floppy drives). Otherwise, your 3 mode floppy drive won't be able to read the special 1.2MB format properly.

However, if you only have a standard floppy drive, disable this feature or your floppy drive may not function properly.