![]() If the target drive only has personal data on it, or is already empty, you can skip the erase process. Step 1: Erase your non-startup drive If your non-startup drive has any other Mac OS, erase it before installing Sierra. In the new macOS Sierra system, the new design of Disk Utility is still here. In El Capitan, Disk Utility was improved with a more colorful edition providing at-a-glance information of how you use your disk. Overview Disk Utility is an essential tool in the Utilities folder to reformat or re-partition a hard drive, mount or create a disc image, repair disk permissions or perform other disk “first aid,” in Mac OS X. What you need to do to fix it is resetting your NVRAM. The last issue is a grey screen or a blue screen that signal something going pretty wrong with the whole Mac-to-display connection. Then you might also experience flickering of certain images while browsing the web. ![]() You might experience troubles waking your Mac from sleep, when the display just never comes live or it does, but minutes after you’ve jammed every key on the keyboard. ![]() Display issues on High Sierra A few things can go wrong with your Mac’s display after the upgrade, so let’s see what can be done when they occur. ![]() If you want to delete an app – perhaps because you’ve replaced it with a newer version – use CleanMyMac Uninstaller to make sure you delete all the files associated with the app. Mount
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February 2023
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