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And when I completed the update process, tried to start the computer.It wont boot. I tried to hard reboot Mac computer, but nothing showed up.
What else can I do to wake up the computer and make it work again with macOS High Sierra. But its still a tough case for ordinary users to fix when their Mac computers fail to boot after macOS High Sierra update or installation. If you are having such a problem, relax This tutorial article will show you how to quickly fix and resolve Mac hard drive wont boot issue after macOS High Sierra update. Just follow any one of offered methods to get your Mac computer back to work again now. So if Mac cannot boot after system update, you can reset SMC to fix Mac wont boot issue after macOS High Sierra update. Restart Mac computer to see if you can enter the system or not. Hold Command Option P R keys while booting Mac to reset NVRAM; 4. Reboot computer again to see if the problem gets solved or not. You can directly purchase EaseUS Data Recovery Wizard for Mac with Bootable Media to create a bootable media for Mac and apply it to restore data from fail to boot Mac computer now. Connect an external storage device to Mac computer; When EaseUS Data Recovery Wizard for Mac launches, follow this tutorial to restore lost files on Mac. After Mac fully starts, restart the computer normally without holding any keysbuttons. Wait patiently till Mac computer finish the reboot process. Click Disk Utility option Click First Aid and try repairing Macs disk; 3. Disk Utility will automatically run a fsck (file system check) operation to help you repair macOS High Sierra fail to boot error; 4. If this fails, try restore from Recovery mode. Vmware Player Os X Sierra Smc Returned Incorrect Download And InstallReinstall OS X in Recovery Mode will automatically download and install the latest macOS High Sierra for your Mac device. Open the kextList.txt file on desktop Press Apple(Command) F to bring up find; 3. In the find field insert Obtained from: Not Signed and copy the destination to the.kext f ile to a list for use later; 4. Click Next to cycle through all of them, for example: SystemLibraryExtensionsJMicronATA.kext 5. Browse your drive to SystemLibraryExtensions and remove all unsigned kext files; 6. Select disk called Install macOS High Sierra in the drive list that appears on screen; 3. Once USB drive is booted, select Disk Utility Choose Macs startup from the list Click Erase; 4. Once Macs startup disk is formatted, return to Utilities window and select Install macOS Choose just erase startup drive to install macOS Follow onscreen prompts to complete the installation. And of course, if you have important data, follow Step 1 to get all saved data out firstly.
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