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7064Re: [wpmac] PPC Apps in Lion?

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  • J.J. McVeigh
    Oct 22, 2011
      Randy B. Singer wrote:

      >It isn't a conspiracy. Apple doesn't "actively prevent" Macs from
      >running older versions of the OS.
      >New Mac models have new firmware. The OS that they come with
      >supports that firmware, earlier versions of the Mac OS were written
      >before that firmware existed, so they don't support it. It's that

      It is a matter not only of firmware, but of how the OS is constructed.

      When Apple introduced OS X, it was possible to acquire OSX and to
      install it on Macs that already had OS9 installed. It was then
      possible to boot either into OS9 or into OS X, at the user's option.

      The dual-boot Macs included many G3s and G4s. Apple did not support
      OS X on 604e PowerPC machines that had third-party G3 processor
      daughter cards installed.

      For some time after that, Apple sold Macs that would not boot into
      OS9, but could run OS-9-flavored Classic.

      Eventually, Apple began selling Macs that could not/would not run
      Classic, and an OS that did not support Classic (OS 10.5).

      These were design decisions by Apple.

      J.J. McVeigh
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