![]() ![]() My Experience on going through the ProcessĪpple has made the process seamless. Now boot your Mac while holding the option key, and it will show you the option for reinstalling the operating system. Just shut down your Mac and plug in the drive. Using the drive to reinstall macOS is simple. Release the keys when the Apple logo appears on the screen.Ĩ. To do that, shut down your Mac and then restart it while holding the CMD+R keys. The first step is to start your Mac in Recovery Mode. With that warning out of the way, let’s get started:ġ. And you won’t be able to recover the deleted data. That also means that you should create a backup of your data before proceeding with this tutorial as you will lose all your data. This is also handy when you are selling your Mac to someone as it ensures that no personal data is left on the device. If your Mac is showing its age or having problems, and you have tried all the troubleshooting methods, the final step is to reset it to its original state. ![]() My experience on going through the process.Do a fresh install of macOS operating system using bootable drive.You can click on the links below to move to the section you are most interested in. In the second section, I will show how you can install the macOS operating system using a bootable device. In the first section, I will share the steps of resetting a Mac. Normally this would leave the logic board that would need to be replaced in order to get the iMac working, but here is the thing, the iMac loads into Ubuntu desktop from a bootable USB drive and using benchmarking tools I can confirm a working CPU and GPU.The article has three sections. NVRAM reset performed, no change to fault ![]() Ram ruled out, known good RAM installed still no change to fault Hard drive ruled out due to software fault finding ![]() Command R / internet recovery will not load used a known good version of 10.13.6 on a bootable Usb drive to boot the iMac - failed, normally this would prove software is not at fault, but there could be firmware issue if the iMac had a higher OS installed. I have just purchased an iMac 27” 2013 model, it was sold to me as not booting.įault finding process, Environmental, Hardware, Software or customer education, environmental and customer education ruled out. Bit of a strange one here, at least I think so. ![]()
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January 2023
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