
You see this error message when you want to erase a partition on Disk Utility.

Erase process has failed couldn’t unmount disk.Erasing “Untitled 3” and creating “Untitled 3”.This guide is going to assist you to figure out this matter. This error occurs differently for the people but the solution is almost the same. Related: Fix erase process has failed while erasing the disk Fixed Erase Process Has Failed Click Done to Continue In this guide, I’m going to show you two methods that really help you to sort out this frustrating problem. In some cases, it’s because of the disk scheme and format. I’m not really 100% sure that why this error occurs sometimes. You might have experienced this issue on the later version of macOS ( macOS Sierra, Mac OS X El Capitan, Mavericks, Yosemite”. In this article, I’m going to show you how to fix Erase Process Has Failed during partitioning macOS High Sierra hard drive on Disk Utility.
