Power Failure on iMac 2019: Ubuntu Installation Solutions
If you have installed Ubuntu on your iMac 2019 and experienced a power failure that caused the system not to boot back to macOS, you're not alone. Many users have encountered this issue, and several solutions have been proposed. This article will cover the key concepts, subtitles, and detailed context of this topic.
Why does this issue occur?
The issue occurs due to the EFI (Extensible Firmware Interface) bootloader being overwritten by the Ubuntu installation. The iMac's firmware may not recognize the EFI bootloader, causing the system to fail to boot back to macOS. This issue is not exclusive to iMac 2019 models and can occur on other Mac computers as well.
Solutions
There are several solutions to this issue. Here are some of the most common ones:
Reinstall macOS
One solution is to reinstall macOS. This process involves booting your iMac into recovery mode, erasing the disk, and reinstalling macOS. While this solution may work, it may not be ideal for users who have important data on their disks that they do not want to lose.
Use a bootable USB stick
Another solution is to create a bootable USB stick with macOS on it and boot your iMac from the USB stick. This process involves downloading the macOS installer from the App Store, creating a bootable USB stick using a tool like Disk Utility or the Terminal, and booting your iMac from the USB stick. Once you have booted from the USB stick, you can erase the disk and reinstall macOS.
Use rEFInd
A third solution is to use rEFInd, a third-party boot manager that can be installed on your EFI partition. rEFInd allows you to choose which operating system to boot when you start your iMac. This solution is ideal for users who want to dual-boot Ubuntu and macOS on their iMac.
Use the rEFInd Boot Manager
To use rEFInd, you need to install it on your EFI partition. Here are the steps to do so:
- Download the rEFInd boot manager from the official website.
- Extract the downloaded file and copy the rEFInd folder to the root of your EFI partition. You can do this using a tool like Disk Utility or the Terminal.
- Restart your iMac and hold down the Option key. You should see the rEFInd boot manager menu. Select the macOS partition to boot into macOS.
Experiencing a power failure on your iMac 2019 after installing Ubuntu can be frustrating, but there are several solutions available. Reinstalling macOS, using a bootable USB stick, or using rEFInd are all viable options. By following the steps outlined in this article, you should be able to get your iMac up and running again.
References
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