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How do I reinstall macOS High Sierra from Disk Utility?
To restart the High Sierra installation
- Hold down Option-Command-R as you turn on or restart your Mac.
- When the main Utilities window appears, select Disk Utility and continue.
- Select your startup volume and click First Aid.
- If First Aid reports successful, quit Disk Utility and select Reinstall macOS. (
How do I wipe my Mac and reinstall High Sierra?
How to Perform a Clean Install of macOS High Sierra
- Step 1: Backup Your Mac. As noted, we’re going to completely erase everything on the Mac.
- Step 2: Create a Bootable macOS High Sierra Installer.
- Step 3: Erase and Reformat the Mac’s Boot Drive.
- Step 4: Install macOS High Sierra.
- Step 5: Restore Data, Files and Apps.
Is there an issue with macOS High Sierra?
This version ran without issue first time, updating the computer’s firmware and installing High Sierra. According to anecdotal comments online, it seems that Apple is installing a firmware upgrade and older versions of the High Sierra installer only worked with specific drive configurations.
When do I update my firmware for High Sierra?
Because the APFS requires support from a new version firmware, your mac’s firmware will have to be updated to the latest version during the installation of High Sierra. After the first restart, the installer prepares the latest version firmware which suitable for your mac model onto EFI system partition of your main disk with bless command.
What is new file system in High Sierra?
Apple has introduced a new file system APFS in High Sierra. The easy fix is to verify your backup and then erase the volume and run the installer against a blank / erased main storage drive.
Do you need to upgrade from Snow Leopard to High Sierra?
If your Mac is running OS X Mountain Lion 10.8 or later, you can upgrade directly to macOS High Sierra on the Mac AppStore. If you’re running Snow Leopard (10.6.8) or Lion (10.7) and your Mac supports macOS High Sierra, you will need to upgrade to El Capitan first.