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.

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Observed surface forms (2)

Statements (31)

Predicate Object
instanceOf classic Mac OS version
operating system
architecture Motorola 68000 NERFINISHED
developer Apple Computer, Inc. NERFINISHED
developerCompanyCountry United States NERFINISHED
distributionMedium floppy disk
includedComponent Finder NERFINISHED
System file
kernelType monolithic kernel
license proprietary software license
multitaskingModel cooperative multitasking
notableFeature added support for Hierarchical File System (HFS) NERFINISHED
improved overall system capabilities compared to earlier System 2 releases
operatingSystemFamily Classic Mac OS NERFINISHED
Mac OS NERFINISHED
partOfSeries Macintosh System Software NERFINISHED
platform Apple Macintosh NERFINISHED
predecessor Macintosh System 2.0 NERFINISHED
successor Macintosh System 3.0 NERFINISHED
supportedFileSystem Hierarchical File System NERFINISHED
MFS
supportedHardware Macintosh 512K NERFINISHED
Macintosh Plus NERFINISHED
original Macintosh 128K (with limitations) NERFINISHED
supportsGUI true
supportsKeyboardInput true GENERATED
supportsMouseInput true GENERATED
targetAudience personal computer users
targetUse general-purpose desktop computing
userInterface Graphical user interface
Macintosh Finder NERFINISHED

Referenced by (3)

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

HFS introducedInProduct Macintosh System 2.1
Fat Mac operatingSystem Macintosh System 2.1
subject surface form: Macintosh 512K
this entity surface form: Macintosh System Software
Lisa Office System software suite successor Macintosh System 2.1
subject surface form: Lisa Office System
this entity surface form: Macintosh System Software with MacWrite and MacPaint