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