Problems Installing Boot Camp On High Sierra Mac

10.01.2021

Mac won't start/boot after macOS High Sierra update/installation, help!

'I upgraded my iMac into latest macOS High Sierra last night. And when I completed the update process, tried to start the computer. It won't 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?'

Although Mac hard drive boot failure issue is not a new problem anymore. But it's 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 won't boot issue after macOS High Sierra update. Just follow any one of offered methods to get your Mac computer back to work again now:

Quick Fix 1. Reset SMC to fix Mac won't boot after High Sierra update

Sometimes, if the Mac computer cables are not connected properly, you may not be able to boot it normally. So if Mac cannot boot after system update, you can reset SMC to fix Mac won't boot issue after macOS High Sierra update:

1. Shut down Mac computer and unplug all cables;
2. Wait for a few minutes and then plug the cables back;
3. Restart Mac computer to see if you can enter the system or not.

Quick Fix 2. Force to reboot Mac and reset NVRAM to fix Mac won't boot issue

It's more than that. Apple didn't port boot camp to APFS at all. So much so if you go to try and delete your bootcamp partition with boot camp assistant it says that the startup drive must be Mac OS extended journaled. Which your system isn't if your on high Sierra due to Apple making the file system APFS. Install Windows on your newer Mac using Boot Camp. Newer Mac computers use a streamlined method to install Windows on your Mac. To find out whether your Mac uses this method, see the Apple Support article Install Windows 10 on your Mac with Boot Camp Assistant.If your Mac is an older model, follow the instructions in Install Windows on your older Mac using Boot Camp instead. I have made a windows 10 bootable usb using ubootin and installed windows 10 deleting all the mac partitions like Recovery, Boot Camp etc. And in windows my speakers werent working nor i was able to right click so i decided to install back High Sierra. After you start the macOS High Sierra installation process, you may notice that your Mac’s screen has gone black, and nothing seems to be happening. The likely culprit is that your Mac has frozen during the restart process. The installation process copies needed files to the destination drive, including a minimum boot environment.

1. Press and hold Power button for a few minutes till Mac turns off;
2. Wait a few seconds and press Power button to turn on Mac;
3. 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.

MacOS Sierra won't boot (bootcamp win10) Hello, community. Creating it again, and installing Windows. After Apple's Boot Camp's software install (in the running Windows) and rebooting, it BSOD'd again. I read around that apple was putting APFS on High Sierra. Mar 23, 2018 However, many macOS High Sierra users have reported trouble creating new Boot Camp partitions on the latest version of Apple’s operating system,” Joseph Keller. Oct 07, 2019 If you have hardware or software that isn't compatible with High Sierra, you might be able to install an earlier macOS, such as Sierra or El Capitan. MacOS High Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.

Note: If these two quick fixes didn't help, continue with below complete solutions to get your problem resolved now.

Complete solution to fix Mac won't boot/fails to boot error after macOS High Sierra update

Step 1. Recover data when Mac hard drive won't boot from High Sierra

If you have important data saved in Mac computer hard drive, do remember to restore data before taking actions to fix Mac won't boot error.

Professional Mac data recovery software with bootable disk can help you effectively restore your data out of Mac hard drive when the computer fails to boot. 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:

1. Insert the created bootable media into Mac and turn on Mac computer, immediately press and hold the Option key and select EaseUS Data Recovery Wizard for Mac to boot;
2. 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.

Step 2. Fix Mac won't boot error after macOS High Sierra update
Fix macOS High Sierra won't boot issue

Method 1. Boot Mac from Safe Mode to fix Mac won't boot issue

1. Turn on Mac, press Shift when you hear the startup sound and release it till you see Apple logo;
2. After Mac fully starts, restart the computer normally without holding any keys/buttons.
3. Wait patiently till Mac computer finish the reboot process.

Method 2. Use Disk Utility to restore Mac from Recovery Mode when macOS High Sierra won't boot

1. Boot Mac up, press Command + R during the boot-up process;
2. Click Disk Utility option > Click First Aid and try repairing Mac's 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.
5. Reinstall OS X in Recovery Mode will automatically download and install the latest macOS High Sierra for your Mac device.

Method 3. Run Terminal to repair Mac hard drive won't boot error due to High Sierra update

1. Open Terminal > Applications > Utilities;
Enter: system_profile SPExtensionsDataType > ~/Desktop/kextList.txt and hit return;
2. 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 file to a list for use later;
4. Click Next to cycle through all of them, for example: /System/Library/Extensions/JMicronATA.kext
5. Browse your drive to /System/Library/Extensions and remove all unsignedkext files;
6. Reboot and your Mac boot problem shall be all set.

Method 4. Reinstall macOS High Sierra to resolve Mac won't boot issue

The last method that you can try is to download macOS High Sierra and create a new bootable drive to clean install macOS High Sierra on Mac computer so to make it boot up normally and work smoothly again.

1. Connect USB bootable drive on Mac and restart Mac by holding Option till you hear the reboot tone;
2. 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 Mac's startup from the list > Click Erase;
4. Once Mac's startup disk is formatted, return toUtilitieswindow and select Install macOS > Choose just erase startup drive to install macOS > Follow onscreen prompts to complete the installation.

This may take you a few hours to complete the task. And of course, if you have important data, follow Step 1 to get all saved data out firstly.

Boot Camp is the macOS solution for installing an alternative operating system on your Mac, letting the new OS run natively on your Mac rather than in a virtual machine. However, many macOS High Sierra users have reported trouble creating new Boot Camp partitions on the latest version of Apple's operating system. For instance, perhaps you get an error telling you that your disk doesn't have enough space, even though macOS has shown you that, indeed, there is enough.

There are a couple of reasons that this could be happening. First, you've got local snapshot backups of your Mac stored locally, rather than on your Time Machine disk. These backups are created quickly once every hour, and while activities, like downloading files or installing apps, shouldn't be affected by their presence, for some reason, Boot Camp is.

The other problem that you might run into is some kind of file system corruption. Unfortunately, the only solution for this is the wipe your Mac and either perform a fresh installation of macOS or restore from a Time Machine backup.

Here's what you can do to try to fix your problems with getting Boot Camp to work on macOS High Sierra.

How to delete local snapshots on your Mac

I've personally used this method to fix the Boot Camp problem. Unfortunately, it's a little complicated and requires the use of the macOS Terminal app, but I'm here to walk you through it.

Open Terminal on your Mac.
Type sudo tmutil listlocalsnapshots / and press the Return/Enter key.
Enter your password and press Return/Enter. Note that when you type in your password, nothing will appear inside Terminal, but it's still working. Your local snapshots should be listed and look something like this: com.apple.TimeMachine.2018-03-21-103127. The important part of each backup is that date, which in this example is 2018-03-21-103127. You'll need the date number on the end of each backup when you go to delete them in the next step.
Type sudo tmutil deletelocalsnapshots 2018-03-21-103127 replacing the 2018-03-21-103127 with the date of the actual snapshot you're trying to delete and press Return/Enter. Auto tune for obs.
Repeat Step 4 for any further snapshots you need/want to delete.

Of course, if you perform Step 2 and Terminal doesn't list any local snapshots, you're likely looking at a problem like file system corruption. In that case, you're going to need to reset your Mac.

How to re-install macOS

There are a couple of ways to re-install macOS on your Mac. You can either perform a clean install, after which you can begin manually re-downloading apps and files, or you can re-install macOS and restore from a backup, such as those created by Time Machine.

Questions?

If you have other questions about or problems with getting Boot Camp to work on macOS High Sierra, let us know in the comments.

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