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Install mac os on older mac11/23/2023 ![]() Their Recovery Servers with valid certificates. The certificates for several of Apples OS's expired in October 2019, Apple haven’t bothered getting these updated on Or if you feel you can only reinstall from Apples Recovery Servers then follow the instructions below. Sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ OS\ X\ Yosemite.app This is the Terminal command if you want to create a bootable USB installer for Mac OS X Yosemite, ![]() This includes Mac that have ran Yosemite but have been Options, find a Mac that you know that can run Yosemite and download Yosemite on itĪnd then make the bootable USB. Install OS X Yosemite.app required to make a bootable USB. Window only works on Macs that can actually run Mac OS X Yosemite.Īny Mac like your MBP M1 that came preinstalled with a newer OS refuses to create the However the next part where you open the InstallMacOSX.pkg and get an installation It has to be opened to the InstallMacOSX.pkg, this part you can do on all Macs. When you download the InstaMacOSX.dmg for Mac OS X Yosemite I hope someone can help, I've spent hours on this and it's driving me crazy :) Is there any way I can download a full image, or anything else, to bypass the need to have the installer running before I'm able to create a bootable USB? Without the installer running in the Applications folder, I can't follow any of the steps on the Apple Support site (createinstaller terminal code process) or via any tutorials on YouTube or whatever comes up on Google. I have a MacBook Pro M1 and when I mount and then try to run the Yosemite installer, of course it crashes out with the error saying I can't install it on this computer. I have downloaded the Yosemite installer dmg. So my next option is to create a bootable USB pen which is where I'm having trouble. I have erased the hard drive as I wanted a clean slate and this method (wipe then reinstall) has worked fine for me in the past. I've tried booting the iMac and reinstalling the OS (El Capitan) but it failed saying that it couldn't find the package (?). If you do want to give it a go, though, you can find step-by-step instructions and download the macOS Sierra Patch tool here.I am restoring a 2008 iMac to basically factory settings and want to reinstall Yosemite as the OS. While we know this worked on Sierra dev previews, we’re also unsure if Apple has managed to patch the borderline ‘hack’, so let us know your mileage in the comments below. In other words, you should have bit of technical know-how if you’re going to try this, and backup all your data first. ![]() These are the late-2008 and mid-2009 MacBook Air, early-2008 and mid-2008 MacBook Pro, early-2008 iMac and early-2008 Mac Pro. On certain devices, too, the workaround will kill your Wi-Fi functionality. That utility, along with a USB drive with a capacity of at least 8GB and a copy of Sierra, should let you install macOS on that handful of older devices.Īll the usual caveats apply: installing macOS Sierra on an unsupported computer could bork it (and your data), as well as likely voiding your warranty. Of course, just because it’s possible doesn’t mean it’s straightforward, which is why developer Colin Mistr (aka dosdude1) created the macOS Sierra Patch Tool.
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