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Re: Downgrading the OS

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On 2018-06-09 16:24, Charles H. Sampson wrote:
> I have an unusual problem that requires me to have a computer running on
> 10.8. I bought the system disk from Apple for $20 but I'm unable to
> "downgrade". When I click on the disk's Install Mac OS X (which has the
> "No" symbol superimposed on it), I get the following messages:


There are good reasons for this. The 10.8 installer has scripts that
expect your systenm disk to have config files for 10.8 or older and
ability to convert config files from older formats to 10.8.  It has no
knowledge of what format later versions would use and thus no login to
convert config files from newer versions down to 10.8

The Mail.App for instance has a mail database that tends to change with
every version. So your 10.9 Mail.App files may not be readable by the
10.8 Mail.App.



Your best bet is to carve out a new partition on your system disk or buy
separate disk and install 19.8 on it and boot 10.8 when you need to run
that app.

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Thread

Downgrading the OS csampson@inetworld.net (Charles H. Sampson) - 2018-06-09 13:24 -0700
  Re: Downgrading the OS ANTant@zimage.com (Ant) - 2018-06-09 15:41 -0500
  Re: Downgrading the OS nospam <nospam@nospam.invalid> - 2018-06-09 16:47 -0400
    Re: Downgrading the OS "John Varela" <newlamps@verizon.net> - 2018-06-10 18:56 +0000
    Re: Downgrading the OS csampson@inetworld.net (Charles H. Sampson) - 2018-06-11 13:46 -0700
  Re: Downgrading the OS JF Mezei <jfmezei.spamnot@vaxination.ca> - 2018-06-09 17:28 -0400
    Re: Downgrading the OS Your Name <YourName@YourISP.com> - 2018-06-10 10:40 +1200
  Re: Downgrading the OS Király <ggrandish@gmail.com> - 2018-06-11 15:04 -0700
    Re: Downgrading the OS nospam <nospam@nospam.invalid> - 2018-06-11 18:07 -0400
      Re: Downgrading the OS Steve Carroll <frelwizzen@gmail.com> - 2018-06-12 07:48 -0700
      Re: Downgrading the OS csampson@inetworld.net (Charles H. Sampson) - 2018-06-17 05:03 -0700
        Re: Downgrading the OS nospam <nospam@nospam.invalid> - 2018-06-17 11:26 -0400
          Re: Downgrading the OS Jolly Roger <jollyroger@pobox.com> - 2018-06-17 16:07 +0000
        Re: Downgrading the OS Jolly Roger <jollyroger@pobox.com> - 2018-06-17 15:44 +0000
          Re: Downgrading the OS Jolly Roger <jollyroger@pobox.com> - 2018-06-17 16:08 +0000
        Re: Downgrading the OS Lewis <g.kreme@gmail.com.dontsendmecopies> - 2018-06-17 17:27 +0000
          Re: Downgrading the OS dempson@actrix.gen.nz (David Empson) - 2018-06-18 12:12 +1200
            Re: Downgrading the OS ANTant@zimage.com (Ant) - 2018-06-17 19:43 -0500
              Re: Downgrading the OS nospam <nospam@nospam.invalid> - 2018-06-17 20:57 -0400
              Re: Downgrading the OS Leonard Blaisdell <leoblaisdell@sbcglobal.net> - 2018-06-18 17:36 -0700
              Re: Downgrading the OS Steve Carroll <frelwizzen@gmail.com> - 2018-06-18 18:42 -0700
        Re: Downgrading the OS JF Mezei <jfmezei.spamnot@vaxination.ca> - 2018-06-17 15:11 -0400
    Re: Downgrading the OS Steve Carroll <frelwizzen@gmail.com> - 2018-06-11 22:44 -0700
    Re: Downgrading the OS Steve Carroll <frelwizzen@gmail.com> - 2018-06-12 01:51 -0700
  Re: Downgrading the OS Jolly Roger <jollyroger@pobox.com> - 2018-06-17 15:41 +0000

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