Apple SuperDrive

Apple SuperDrive
Apple FDHD Drive / SuperDrive (Model G7287)
Manufacturer	Apple Computer, Inc. (Sony mechanism)
Type	Floppy disk drive
Discontinued	1998
Price	US$399
Interface	DE-19 floppy port
Compatible	Macintosh (SWIM-equipped), Apple IIGS (with controller card)
Dimensions	~200 mm × 180 mm × 40 mm
Weight	~800 g
Predecessor	Apple 3.5 Drive
Successor	None (floppy eliminated with iMac)
Model	G7287

The Apple SuperDrive (originally Apple FDHD Drive, model G7287) was Apple's first high-density 1.44 MB 3½-inch floppy disk drive, introduced in 1989. The drive supported all Apple 3.5-inch formats (400K, 800K, 1.44 MB) plus IBM PC formats (720K, 1.44 MB), enabling cross-platform file exchange. The SuperDrive became standard equipment in every desktop Macintosh until the iMac eliminated the floppy drive in 1998.

Background

Following IBM's introduction of 1.44 MB high-density floppy drives in the PS/2 systems (1987), Apple adopted the format for cross-compatibility with MS-DOS and Windows systems. The SuperDrive used the industry-standard MFM (Modified Frequency Modulation) scheme for PC compatibility while maintaining backward compatibility with Apple's proprietary GCR (Group Coded Recording) variable-speed formats.

Naming

• Apple FDHD Drive — Original name (Floppy Disk High Density)
• Apple SuperDrive — Later marketing name (G7287)

Note: Apple later reused "SuperDrive" for optical drives, creating some confusion. This article covers the 1989 floppy drive.

Design

Physical Construction

The external SuperDrive uses the Platinum gray case design:

• Matches Apple 3.5 Drive enclosure
• Manual eject button (for Apple II compatibility)
• Daisy-chain connector
• DE-19 floppy port connection

Drive Mechanism

The internal Sony mechanism supports:

• Double-sided, high-density media
• Variable speed for Apple GCR formats
• Fixed speed for PC MFM formats
• Auto-inject (desktop) or manual-inject (PowerPC) variants

Format Support

Format	Capacity	Encoding	Platform
Apple 400K	400 KB	GCR variable	Mac MFS
Apple 800K	800 KB	GCR variable	Mac HFS
Apple 1.44 MB	1.44 MB	GCR/MFM	Mac HFS
PC 720K	720 KB	MFM fixed	MS-DOS
PC 1.44 MB	1.44 MB	MFM fixed	MS-DOS/Windows

PC format reading requires appropriate system software (Apple File Exchange or later system versions with DOS mounting).

Compatibility

Requirements

Full SuperDrive functionality requires the SWIM (Sander–Wozniak Integrated Machine) floppy disk controller:

• Present in Mac SE FDHD and later Macintoshes
• Available via Apple II 3.5 Disk Controller Card
• Not present in original IIGS, IIc Plus, or older Macs

Fallback Mode

When connected to systems with the older IWM (Integrated Woz Machine) controller:

• Functions as standard 800K drive
• No high-density or PC format support
• No 1.44 MB capacity

Compatible Systems

Full Support (SWIM):

• Macintosh SE FDHD and later (through Classic II)
• Apple IIe (with 3.5 Disk Controller Card)
• Apple IIGS (with 3.5 Disk Controller Card)

800K Mode Only (IWM):

• Original Apple IIGS
• Apple IIc Plus
• Macintosh Plus, SE

Not Compatible:

• Apple IIe without controller card
• Macintosh 128K, 512K (no HFS support)

Specifications

Parameter	Value
Model number	G7287
Capacity	400K, 800K, 1.44 MB (Apple); 720K, 1.44 MB (PC)
Media	3.5-inch floppy, DD or HD
Interface	DE-19 floppy port
Transfer rate	Variable (depends on format and zone)
Mechanism	Sony auto-inject or manual-inject
Case color	Platinum gray

Production History

• 1989 — Introduced as Apple FDHD Drive
• 1989 — Renamed SuperDrive
• 1989 — Internal version standard in SE FDHD, Mac IIx, IIcx, IIci
• 1991 — Apple II 3.5 Disk Controller Card enables Apple II support
• 1994 — PowerPC Macs switch to manual-inject mechanism
• 1998 — iMac G3 eliminates floppy drive entirely

The external SuperDrive was discontinued after the Classic II; subsequent Macs included internal drives or used the HDI-20 PowerBook external drive.

Maintenance

Head Cleaning

• Use 3.5-inch head cleaning disk
• Follow cleaning disk instructions
• Do not over-clean (excessive cleaning wears heads)

Eject Mechanism

Auto-inject drives are prone to eject motor failure:

• Symptoms: Disk won't eject, grinding noise
• Solution: Manual eject via paperclip hole (emergency) or motor replacement

Common Issues

Problem	Cause	Solution
Won't read any disks	Dirty heads	Clean heads
Won't read HD disks	Connected to IWM system	Requires SWIM controller
Won't eject	Eject motor failure	Manual eject or repair
Reads Apple but not PC	Software issue	Install Apple File Exchange
Intermittent errors	Worn drive	Replace mechanism

Collecting

Identification

• Model G7287 on label
• Platinum gray case
• DE-19 connector (19-pin)
• Supports HD media (check disk hole sensor)

Condition Assessment

• Mint: Original box, fully functional all formats
• Excellent: Reads/writes all formats reliably
• Good: Reads/writes most formats
• Fair: Some formats unreliable
• Poor: Non-functional

Testing

Test with multiple disk types:

• 400K single-sided (if Mac supports MFS)
• 800K double-density
• 1.44 MB high-density
• PC formatted 1.44 MB (with appropriate software)

Legacy

The SuperDrive represented Apple's embrace of industry-standard formats after years of proprietary designs. Its ability to read PC disks made the Macintosh more viable in mixed-platform environments.

The elimination of the floppy drive with the 1998 iMac was controversial at the time but prescient—CD-ROM and eventually USB drives supplanted floppy disks entirely.

See Also

• Apple 3.5 Drive
• Apple Floppy Disk Drive
• Disk II
• Apple UniDisk 3.5

References

• Wikipedia — Macintosh External Disk Drive
• Big Mess o' Wires — M0131 floppy drive documentation
• EveryMac specifications