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Tag: Macintosh System Enablers

In the past when Apple released new computers the system software was revised. To get around this problem system enablers were written which contained information necessary for newer computers to start up. All Apple computers released since system software 7.1 (September 1992) require a system enabler to start up.

Macintosh System Enablers for OS 7.1 to 7.5.5: Current Versions and Change History

The information in this post was taken from an the Apple knowledge base (TA28948) with the assumption that the source article may be removed in the future (like many other articles that dealt with the vintage systems).  I have updated the table to link to copies of the System Enablers that are currently being hosted by the Internet Archive.   For additional information on how to use these enablers see: Selecting your System Software

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Selecting your System Software for your 68k Macintosh

As I mentioned in my Setting up your vintage (classic) 68k Macintosh a lot of the supporting information that used to be on Apple’s knowledge base about their older systems has slowly been disappearing. So I’ve decided to capture some of the key information I found useful in this blog. Starting with which Macintosh 68k and PPC Systems support the different operating systems released by Apple.

Not every Macintosh System can run every OS, for example System 8.1 (with a hack) was the last version to support the Motorola 68000 (68k) series of processors, while support for Macintosh Systems with the PowerPC series of processors started with System 7.1.2 and ended with OS X 10.5 (see Wikipedia’s: history of Mac OS).

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