Is there a complete step on how can I resolve this issue of being unable to erase the partition? My aim is to be able to install MacOS High Sierra in clean mode. I was also able to create a USB installer for this and the MacOS Sierra can still be used without issue. Is there a way to completely remove the partition, and do a clean install? I also was not able to unmount the partition. To complete the clean install procedure described below, youll need: macOS High Sierra Installer, available from the Mac App Store. When I try to delete the partition and always get the following error message:Įrasing "Macintosh HD" and Creating "Macintosh HD"Įrase process has failed. So, I went ahead and clicked First Aid scan the disk for error for the Macintosh HD partition but it also failed with an internal error. The easiest way is to use the Erase Assistant that Apple added to macOS in the 2021 update. I spent a couple of hours trying to find a solution and one of them said that I need to delete the Macintosh partition or check on the partition disk for error first. HOW TO CLEAN INSTALL macOS High Sierra - With A BOOTABLE FLASH DRIVE Auto Technica 12.3K subscribers Subscribe 1.2K Share 216K views 5 years ago UPDATED FOR MACOS MOJAVE (Process is the same if. Option 1: Factory Reset Your Mac There are two ways of wiping your Mac so that it’s ready for a new owner (or simply because you want a fresh start). This is the drive that you wish to format and make the clean install onto. Level 1 5 points macOS High Sierra clean install and restore I was wanting to know what would be the proper way to completely wipe my MacBook Pro and update to High Sierra and then restore my personal data from my Time Machine backup. 7) Select Macintosh HD or whatever you’ve named your Mac drive. Select Disk Utility from the list, then click Continue. Try running this application again (I tried this more than 5 times and still get the same error). 6) The Mac boots into macOS Utilities (see image below), listing four options. The easiest way to install MacPorts on a Mac is by downloading the pkg or dmg. It should run you through a brief and basic setup process, then install the software. Installers for legacy platforms Mojave, High Sierra, Sierra, El Capitan. Now I want to clean install the existing OS using macOS High Sierra v10.13.6, I went to the recovery mode, connect to wifi and click on Reinstall but the issue that I encountered is whenever I try to install it I get the following error:Īn error occurred while preparing the installation. As listed in that list of options, hit Reinstall MacOS High Sierra, or install a new copy, or whatever it says at the very top. Hello everyone, I have an iMac 18,2 with the current operating macOS Sierra.
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