- FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED HOW TO
- FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED MAC OS
- FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED INSTALL
- FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED UPDATE
- FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED DOWNLOAD
FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED INSTALL
Problem 3: An error occurred while verifying firmware Macos Could Not Be InstalledĪnother error that often shows up during High Sierra Installation is that: macOS could not install in your computer an error occurred while verifying firmware. The installation will continue and complete. Reboot your Mac and it should display the same Apple installation screen. Copy the file to startup partition according to this path: /Volumes/Macintosh HD/System/Installation/Packages/OSInstall.mpkg. If it findss a OSInstall.mpkg on the recovery partition. Open Terminal and type this command: $ find -f / OSInstall.mpkg | grep OSInstall.mpkg. So finding the missing mpkg file and restarting the installation should make the error go away. mpkg files via TerminalĪs the error shows, o, the OSInstall.mpkg file is missing. Check this guide to clean install macOS on Mac (opens new window).
FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED UPDATE
through App Store update, you may create a bootable update drive and clean install macOS on your Mac. If you couldn't install macOS High Sierra, Sierra, El Captitan, etc. Solution 5: Clean install macOS bootable drive There are other users who find it helpful to reinstall macOS in Recovery mode: Enter the Mac into Recovery mode and choose Reinstall macOS from the Recovery menu. Solution 4: Reinstall macOS in Recovery mode The mac will reboot and install High Sierra successfully. It prompts you to select a startup disk, select the High Sierra boot disk. Exit the Disk Utility and Recovery mode.Choose Disk Utility and mount the startup disk.Restart your iMac or MacBook and hold down Command+R to boot your Mac into recovery mode.Some users posted this solution on Mac forum to fix the “macOS could not be installed on your computer' error. You can then reinstall macOS High Sierra. The mac will boots up normally without data loss. To restart Mac in Sierra: When you see the 'High Sierra could not be installed on your computer' message, instead of choose 'quit the installer and restart', click Apple menu > System Preferences > Startup Disk, select Sierra system and click Restart to start up your Mac in Sierra. For example, if you are upgrading mac from Sierra to High Sierra, you may restart the Mac in Sierra, then make a backup and re-download High Sierra to try again. If yo don't have a backup and are afraid of messing up your Mac, you can restart the Mac to its previous version.
FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED DOWNLOAD
You can download macOS High Sierra from App Store and try to start the installation again. As the Mac restarts, press and hold the Shift key until the Apple logo appears. To boot your Mac to safe mode, click Apple menu > Restart. The first solution that you can try is to re-download macOS installer in safe mode. Solution 1: Boot in Safe mode and re-download OS installer If the macOS Sierra or High Sierra cannot be installed because of this error, here are the solutions. Some users receive this error during the installation of macOS High Sierra, which says: macOS could not be installed on your computer The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged Quit the installer to restart your computer and try again. Problem 2: The path/System/Installation/Packages/OSInstall. If you find it too much trouble to manually clear out Mac, use MacMaster to easily clean your Mac and get more free space. If the storage is not enough for the update, you may remove some unneeded files and apps to free up space.įonePaw MacMaster (opens new window) is a cleaner that scans out unneeded apps, duplicated files, system junks, large old files and clean them in one click. It will shows how much free space is available on your Mac.
FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED MAC OS
After downloading a Mac OS installer, you try to install the OS but the installation cannot continue because it says there is not enough space on Mac for Sierra or High Sierra.īefore you are able to successfully install the macOS, you should know how many space it is needed to install the new update. You may have encountered the problem before.
FIRST AID HIGH SIERRA VOLUME COULD NOT BE UNMOUNTED HOW TO
Problem 1: Not enough storage for macOS Sierra/High Sierra, how to fix? To troubleshoot macOS High Sierra/Sierra install problems, we include 5 common problems and their solutions. Sometimes, you cannot install a new Mac OS on your iMac, MacBook due to various installation problems. Installing macOS High Sierra, Sierra, El Capitan, Yosemite doesn't always go well. FonePaw - Solution - Troubleshooting macOS High Sierra Install Problems