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<blockquote data-quote="rubaiyat" data-source="post: 1627052" data-attributes="member: 240393">I keep copies of all my major installers, having 30 years of experience of Apple.How I would get it to you I don't know, and brings you back to the same concern if you have one.Apple gives their Systems away these days, so as long as you install onto sanctioned hardware there is no problem.Try Apple first, with luck they may help.Carbon Copy Cloner and SuperDuper both make perfect bootable copies of your drives and should be a permanent part of your rescue/maintenance set-up. You will need to make a bootable version of your current installation, because there will inevitably be something you missed and need to go back for. Particularly as Apple makes it extraordinarily difficult to transfer even simple data and have it still work.You will need to completely wipe your hard drive to install an older OS, something Apple also makes extraordinarily difficult. Once your installation is gone, its gone!I just had another thought. Make this multi-step. Install Mavericks onto an external Hard Drive first then use that for a while before making the next step of getting rid of the internal installed Yosemite and replacing it with what you have on the external hard drive. A sort of reverse procedure for what I normally do for upgrades</blockquote>

[QUOTE="rubaiyat, post: 1627052, member: 240393"] I keep copies of all my major installers, having 30 years of experience of Apple. How I would get it to you I don't know, and brings you back to the same concern if you have one. Apple gives their Systems away these days, so as long as you install onto sanctioned hardware there is no problem. Try Apple first, with luck they may help. Carbon Copy Cloner and SuperDuper both make perfect bootable copies of your drives and should be a permanent part of your rescue/maintenance set-up. You will need to make a bootable version of your current installation, because there will inevitably be something you missed and need to go back for. Particularly as Apple makes it extraordinarily difficult to transfer even simple data and have it still work. You will need to completely wipe your hard drive to install an older OS, something Apple also makes extraordinarily difficult. Once your installation is gone, its gone! I just had another thought. Make this multi-step. Install Mavericks onto an external Hard Drive first then use that for a while before making the next step of getting rid of the internal installed Yosemite and replacing it with what you have on the external hard drive. A sort of reverse procedure for what I normally do for upgrades [/QUOTE]

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