Re: Very basic need, very difficult to achieve.
Re: Very basic need, very difficult to achieve.
- Subject: Re: Very basic need, very difficult to achieve.
- From: Graham Cox <email@hidden>
- Date: Wed, 04 May 2016 12:18:13 +1000
> On 4 May 2016, at 10:31 AM, Graham Cox <email@hidden> wrote:
>
>> Downgrading the OS (even on a second partition) isn’t actually that
>> simple of a request. If your computer was released after OS X Mavericks,
>> it definitely cannot support running OS X Mavericks.
>
> In this case it’s a MId-2010 iMac, should be OK...
>
>> It’s also possible
>> that a firmware fix or disk format change may have shipped in a newer
>> OS, and older OSes are not qualified against that configuration.
>
> …subject to that of course.
>
Some progress, more roadblocks…
I was able to create a bootable installer using the createmediainstaller command line.
I was able to see this disk when I rebooted with the option key down, and it booted into that disk.
I was initially able to run the installer and choose a target disk, but at that point it gave an error that the installer could not be verified and ‘may’ be corrupt.
I went to the app store (arrgh!!) to redownload the full installer image (why oh why is this not available as a developer download from apple dev? Using the app store is an abysmal non-choice to force on developers). I could not download 10.9 as the button was greyed out with “downloaded” on it.
So now I’m attempting to download 10.8 and see whether I can upgrade to 10.9 from there.
If Apple had anything other than contempt for their developers they’d surely make this process easier. I can understand why they might not want to make it easy for a typical user to downgrade (though why not, actually?), but a developer has a legitimate reason to set up an older OS for testing. If Xcode had some sort of reliable mechanism for detecting problems when targeting an older OS that would not matter so much, but it doesn’t - so many uses of API that target later than the minimum build OS go unwarned that there’s no substitute for running on those older versions to find the bugs. And usage statistics show that users are still running 10.8 and 10.9 in significant percentages.
Does anyone have a reliable source for a 10.9 full install download that doesn’t involve the app store? At this point I’ll try anything, including a Pirate Bay torrent if need be. Apple, shame on you for forcing this situation, it’s absoutely pathetic.
—Graham
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