Apple UniDisk 5.25

E200297

computer peripheral floppy disk drive

The Apple UniDisk 5.25 is an external 5.25-inch floppy disk drive designed by Apple for use with Apple II series computers and compatible systems.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
Apple UniDisk 5.25 canonical	1
Disk II interface (Apple II family)	1
UniDisk 5.25	1

How this entity was disambiguated

This entity first appeared as the object of triple T1774472 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Apple UniDisk 5.25
Context triple: [Apple IIe Card, supportsPeripheral, Apple UniDisk 5.25]

A. Macintosh SE
The Macintosh SE is a compact all-in-one personal computer introduced by Apple in 1987, notable for adding an internal expansion slot and improved performance to the classic Macintosh line.
B. Macintosh SE/30
The Macintosh SE/30 is a compact all-in-one Macintosh computer introduced by Apple in 1989, notable for its powerful 68030 processor, expandability, and popularity as a high-performance classic Mac.
C. Macintosh XL
The Macintosh XL was a rebranded and slightly modified version of Apple’s Lisa 2 computer, marketed as an early Macintosh-compatible business workstation.
D. System 5
System 5 is an early version of Apple’s classic Macintosh operating system used on machines like the Macintosh Plus in the late 1980s.
E. Macintosh 512K
Macintosh 512K is an early Apple personal computer released in 1985 that expanded the original Macintosh’s memory and storage capacity, making it more practical for business and productivity use.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Apple UniDisk 5.25
Target entity description: The Apple UniDisk 5.25 is an external 5.25-inch floppy disk drive designed by Apple for use with Apple II series computers and compatible systems.

A. Macintosh SE
The Macintosh SE is a compact all-in-one personal computer introduced by Apple in 1987, notable for adding an internal expansion slot and improved performance to the classic Macintosh line.
B. Macintosh SE/30
The Macintosh SE/30 is a compact all-in-one Macintosh computer introduced by Apple in 1989, notable for its powerful 68030 processor, expandability, and popularity as a high-performance classic Mac.
C. Macintosh XL
The Macintosh XL was a rebranded and slightly modified version of Apple’s Lisa 2 computer, marketed as an early Macintosh-compatible business workstation.
D. System 5
System 5 is an early version of Apple’s classic Macintosh operating system used on machines like the Macintosh Plus in the late 1980s.
E. Macintosh 512K
Macintosh 512K is an early Apple personal computer released in 1985 that expanded the original Macintosh’s memory and storage capacity, making it more practical for business and productivity use.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	computer peripheral ⓘ floppy disk drive ⓘ
brand	Apple ⓘ linked to: Apple Inc.
category	Apple II peripherals ⓘ Apple hardware ⓘ floppy disk drives ⓘ
compatibleWith	Apple IIc ⓘ linked to: Apple II Apple IIc Plus ⓘ Apple IIe ⓘ linked to: Apple II Apple IIgs ⓘ linked to: Apple II
connectsVia	Apple II disk port ⓘ DB-19 connector ⓘ
dataEncoding	Apple GCR 5-and-3 encoding ⓘ
designedFor	Apple II series ⓘ linked to: Apple II
developer	Apple Computer, Inc. ⓘ linked to: Apple Inc.
formFactor	external drive ⓘ
hasColor	beige ⓘ
hasFeature	daisy-chain pass-through port ⓘ disk-in-use indicator light ⓘ external power from host computer ⓘ front-loading disk slot ⓘ plastic enclosure ⓘ
interfaceType	Apple II 5.25-inch disk interface ⓘ
manufacturer	Apple Computer, Inc. ⓘ linked to: Apple Inc.
marketedAs	UniDisk 5.25 ⓘ linked to: Apple UniDisk 5.25
mediaCapacity	140 KB per disk side ⓘ
mediaSides	single-sided ⓘ
mediaType	5.25-inch floppy disk ⓘ
mounting	desktop external unit ⓘ
operatingSystem	Apple DOS ⓘ ProDOS ⓘ
platform	Apple II family ⓘ linked to: Apple II
predecessor	Disk II ⓘ
recordingMethod	GCR ⓘ
rotationSpeed	300 RPM ⓘ
successor	Apple 3.5 Drive ⓘ linked to: Sony 3.5-inch floppy drive
supports	Apple DOS 3.3 disks ⓘ linked to: Apple DOS CP/M disks on Apple II with CP/M card ⓘ ProDOS disks ⓘ
supportsDiskFormat	35-track Apple II 5.25-inch format ⓘ
targetMarket	education market ⓘ home computer users ⓘ small business users ⓘ
usedFor	reading 5.25-inch floppy disks ⓘ writing 5.25-inch floppy disks ⓘ
usedOn	16-bit Apple IIgs ⓘ linked to: Apple II 8-bit Apple II computers ⓘ
usedWith	Apple II software on floppy disks ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Apple IIe Card → supportsPeripheral → Apple UniDisk 5.25 ⓘ

subject linked to: Apple IIe Card (for some models)

Apple 5.25" floppy disk drive → interface → Disk II interface (Apple II family) ⓘ

linked to: Apple UniDisk 5.25

Apple UniDisk 5.25 → marketedAs → UniDisk 5.25 ⓘ