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. Use either the keyboard's arrow keys or the mouse to select 'Install MacOS High Sierra. When you see the boot selection screen as shown, release the option key. Hold down the option or alt () key on the keyboard and power on the device. Is there a way to completely remove the partition, and do a clean install? I also was not able to unmount the partition. Plug in your macOS High Sierra bootable flash drive. When I click show Details: ErasingĪPFS Volume File Content An internal error has occurred.

When I try to delete the partition and always get the following error message:Įrasing 'Macintosh HD' and Creating 'Macintosh HD' Erase process hasįailed. 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 XQuartz Project provides a complete X11 release for macOS including server.

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. Installers for legacy platforms Mojave, High Sierra, Sierra, El Capitan. Try running thisĪpplication again (I tried this more than 5 times and still get the 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. I have an iMac 18,2 with the current operating macOS Sierra.

Mac os high sierra installer