Macintosh System 2.1
E737713
Macintosh System 2.1 is an early version of Apple’s classic Mac OS that marked a significant step in the platform’s evolution by adding support for the Hierarchical File System and improving overall system capabilities.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Macintosh System Software | 2 |
| Macintosh System 2.0 | 1 |
| Macintosh System 2.1 canonical | 1 |
| Macintosh System Software with MacWrite and MacPaint | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8470719 — 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: Macintosh System 2.1 Context triple: [HFS, introducedInProduct, Macintosh System 2.1]
-
A.
System 6
System 6 is a classic Apple Macintosh operating system from the late 1980s known for its compact, stable graphical environment used on early Macs like the Macintosh SE.
-
B.
System 7 (early versions)
System 7 (early versions) is an early 1990s generation of Apple’s classic Mac OS that introduced features like virtual memory, personal file sharing, and improved multitasking to Macintosh computers.
-
C.
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.
-
D.
Macintosh II
The Macintosh II is a modular, color-capable personal computer introduced by Apple in 1987 that marked the company’s move toward more expandable, high-performance Macintosh systems.
-
E.
Mac OS 8
Mac OS 8 is a classic Apple Macintosh operating system released in 1997 that introduced a revamped Platinum interface, improved multitasking, and enhanced Internet and multimedia features for pre-OS X Macs.
- 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: Macintosh System 2.1 Target entity description: Macintosh System 2.1 is an early version of Apple’s classic Mac OS that marked a significant step in the platform’s evolution by adding support for the Hierarchical File System and improving overall system capabilities.
-
A.
System 6
System 6 is a classic Apple Macintosh operating system from the late 1980s known for its compact, stable graphical environment used on early Macs like the Macintosh SE.
-
B.
System 7 (early versions)
System 7 (early versions) is an early 1990s generation of Apple’s classic Mac OS that introduced features like virtual memory, personal file sharing, and improved multitasking to Macintosh computers.
-
C.
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.
-
D.
Macintosh II
The Macintosh II is a modular, color-capable personal computer introduced by Apple in 1987 that marked the company’s move toward more expandable, high-performance Macintosh systems.
-
E.
Mac OS 8
Mac OS 8 is a classic Apple Macintosh operating system released in 1997 that introduced a revamped Platinum interface, improved multitasking, and enhanced Internet and multimedia features for pre-OS X Macs.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
classic Mac OS version
ⓘ
operating system ⓘ |
| architecture |
Motorola 68000
ⓘ
linked to:
Motorola 68000 family
|
| developer |
Apple Computer, Inc.
ⓘ
linked to:
Apple Inc.
|
| developerCompanyCountry |
United States
ⓘ
linked to:
United States of America
|
| distributionMedium | floppy disk ⓘ |
| includedComponent |
Finder
ⓘ
System file ⓘ |
| kernelType | monolithic kernel ⓘ |
| license | proprietary software license ⓘ |
| multitaskingModel | cooperative multitasking ⓘ |
| notableFeature |
added support for Hierarchical File System (HFS)
ⓘ
linked to:
Hierarchical File System
improved overall system capabilities compared to earlier System 2 releases ⓘ |
| operatingSystemFamily |
Classic Mac OS
ⓘ
Mac OS ⓘ
linked to:
macOS
|
| partOfSeries |
Macintosh System Software
ⓘ
linked to:
Macintosh System 2.1
|
| platform |
Apple Macintosh
ⓘ
linked to:
Apple Macintosh computers
|
| predecessor |
Macintosh System 2.0
ⓘ
linked to:
Macintosh System 2.1
|
| successor | Macintosh System 3.0 ⓘ |
| supportedFileSystem |
Hierarchical File System
ⓘ
MFS ⓘ |
| supportedHardware |
Macintosh 512K
ⓘ
Macintosh Plus ⓘ original Macintosh 128K (with limitations) ⓘ
linked to:
original Macintosh 128K
|
| supportsGUI | true ⓘ |
| supportsKeyboardInput | true ⓘ |
| supportsMouseInput | true ⓘ |
| targetAudience | personal computer users ⓘ |
| targetUse | general-purpose desktop computing ⓘ |
| userInterface |
Graphical user interface
ⓘ
Macintosh Finder ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Macintosh System 2.1 Description of subject: Macintosh System 2.1 is an early version of Apple’s classic Mac OS that marked a significant step in the platform’s evolution by adding support for the Hierarchical File System and improving overall system capabilities.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Fat Mac
linked to: Macintosh System 2.1
subject linked to:
Lisa Office System software suite
linked to: Macintosh System 2.1
linked to: Macintosh System 2.1
linked to: Macintosh System 2.1