On Tue, May 3, 2016, at 06:28 PM, Graham Cox wrote: > My main dev machine runs the latest OS - 10.11.4 > > I need to install a 10.9 image on a disk partition for development > testing. > > How? > > Apple’s dev site is getting worse all the time - wasting its time selling > you something you already have - OS X - but hiding away basic resources, > like an OS 9 installer that I can download. I’ve just spent 20 minutes > fruitlessly searching the dev site. It’s utterly baffling, taking you > round and round in circles. > > How can I do this? Surely it’s actually possible, somehow? > > Note that I do have an old Mavericks Installer, but it refuses to run on > 10.11, saying that the app is too old ro run on this version of the OS. I > also have not been able to set the partition I intend to use (that > contains the installer) as a startup disk. I seem to recall that there > was a thread about this not long ago, I even seem to remember pitching in > something, but now I come to need it myself, I can’t get it to work.
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. 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. Virtualization of recent versions of OS X is permitted on Apple-branded hardware. That’s probably your best bet. --Kyle _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
