- Boot Failure After Macos High Sierra 10.13.2 Upgrade Kit
- Macos High Sierra 10.13.6
- Boot Failure After Macos High Sierra 10.13.2 Upgrade Kit
- Boot Failure After Macos High Sierra 10.13.2 Upgrade Free
Mac fails to boot or start after the macOS update. Whatever is preventing your Mac from starting up, follow these 5 simple solutions to get it working again. If you have data loss problem after macOS update, EaseUS Data Recovery Wizard for Mac provides tried-and-true data recovery service to you.
This page covers 5 fixes for Mac won't boot or start issue after macOS Big Sur, Catalina, Sierra or older macOS update issue. If you are with this issue, follow to make your Mac computer work now:
Workable Solutions | Step-by-step Troubleshooting |
---|---|
Fix 1. Fix PRAM/NVRAM | Restart Mac > Hold Command+Option+P+R keys to turn on Mac...Full steps |
Fix 2. Reset SMC | Shut down Mac > Unplug all cables > Plug in cables back after a few minutes...Full steps |
Fix 3. Boot in Safe Mode | Start Mac > Hold 'Shift' until the login window appears > Release the key when login in window appears...Full steps |
Fix 4. Run Disk Utility | Turn of Mac > Hold Command + R keys and power Mac back up > Enter recovery mode...Full steps |
Fix 5. Reinstall macOS | Download macOS Catalina, Mojave, or Sierra > Create bootable USB > Clean install macOS...Full steps |
Dec 07, 2017 But after 10.13.2.2 update (which patches Meltdown stuff) edited AMD9500Controller.kext is recognised only with disabled SIP. If you turned SIP on, RX 580 is not recognised, and graphic acceleration is turned off completely (as in safe mode). Pre-Release MacOS High Sierra 10.13.2; Welcome to InsanelyMac.com - No more ads! Seems to be the same with or without those boot flags. So until we have an. Sorry for the lack of specificity, but I finally was able to get macOS High Sierra (10.13) installed on my Mac mini (Late 2012; 2.5 GHz Intel Core i5) with 16GB of memory and an internal disk that is a plain hard disk drive; not an SSD.
macOS has now been updated to 11.0, and many Mac users are trying to upgrade to the newest version. While for most it's a usual pleasurable experience, for some this update had downsides. Some users complain that their Mac computers won't boot after installing new macOS Big Sur/Catalina. When Mac fails, it usually can't boot or start up properly. If you are faced with this situation, the most important thing should be recovering data from the unbootable Mac because:
- Your attempts to fix the Mac not booting issue may write new data on this Mac, which will overwrite the old data and make it irrecoverable.
- Recovering data before the complex fixes can avoid data loss.
EaseUS Mac data recovery software is able to recover data from unbootable Macs after update. It creates a bootable media that enables you to recover data from Mac hard drive (If you only have one Mac). What's more, it recovers data from failed internal Mac hard drive, APFS boot drive, and unmountable APFS boot volume, etc. If you have two Mac devices, take out the hard drive and connect it to the other Mac. Download EaseUS Data Recovery Wizard for Mac on that Mac device, and recover data from the hard drive.
Then, you can read on and Fix the 'Mac won't boot after update' issue after you have successfully got data from the drive.
1. Reset the PRAM / NVRAM
NVRAM refers to special memory sections on your Mac that store data that persists even when the Mac is shut off, such as volume settings and screen resolution. Resetting that data isn't harmful! In some cases, after performing this step, your Mac will restart normally.
- Restart your Mac
- Hold down all of these keys: 'Command', 'Option', 'P' and 'R', and turn on the Mac. (It's the same keys to reset the PRAM).
- Keep holding the keys down until you hear the Mac restart again.
You may see a progress bar on startup. If the progress bar fills up and then the Mac starts up, you're probably good to go. If not, reset SMC.
2. Reset the SMC
In some situations, you may need to reset your Mac's SMC (System Management Controller).
- Shut the Mac down.
- Unplug all cables.
- Wait for a few minutes.
- Plug the cables back in and start up the Mac.
If you've got a Mac desktop, unplug it for 15 seconds and then plug it in and after five seconds press the power button.
3. Boot Mac in Safe Mode
Safe Mode is a stripped-down version of the Mac operating system that can be useful if you are trying to troubleshoot issues with your Mac.
- Start your Mac, press and hold the 'Shift' key, and make sure your Mac has at least 9 GB of free space.
- When the login window appears to release the shift key and log in. You may be required to log in twice if you have FileVault turned on. Then restart the device.
Wait patiently till Mac computer finish the reboot process.
4. Run Disk Utility in Recovery Mode
If your Mac is booting but the operating system isn't loading up, you may have a corrupted drive. Luckily it is possible to fix this in Recovery Mode. In Recovery Mode you can restore from a Time Machine backup, use Disk Utility to verify and repair connected drives, check your internet connection, get help online using Safari, and install or reinstall macOS.
- Make sure the Mac is off. If it's stuck on a grey, blue or white screen, just hold down Mac's power button for several seconds until it shuts off.
- Hold down the 'Command' and 'R' keys, and power the Mac back up again. Keep pressing 'Cmd' + 'R' while your Mac is booting up.
- Once your Mac starts in Recovery Mode you can have access to 'Utilities'. Click 'Disk Utility', locate the icon for your Mac's drive, and click 'Verify Disk'.
5. Reinstall macOS Big Sur/Catalina/Sierra
The last method to fix macOS Big Sur, Catalina or Sierra fails to boot after update error is to reinstall macOS.
- You can download wanted macOS Big Sur/Catalina/Sierra and create a bootable USB drive to clean install macOS Big Sur/Catalina/Sierra on your computer again.
- You can also boot into Recovery mode (Solution 4), and then click to install the latest OS and follow the onscreen prompts. Our article on resetting a Mac to factory settings has more information on reinstalling macOS.
If your Mac does not respond after trying these tips, contact Apple Support or a certified Apple Repair Center. It’s likely there is a problem with your logic board or other internal hardware.
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?'
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.
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
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.
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.
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.
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.
2. After Mac fully starts, restart the computer normally without holding any keys/buttons.
3. Wait patiently till Mac computer finish the reboot process.
![2017 2017](/uploads/1/1/8/5/118545745/422548299.jpg)
Boot Failure After Macos High Sierra 10.13.2 Upgrade Kit
Method 2. Use Disk Utility to restore Mac from Recovery Mode when macOS High Sierra won't boot
Macos High Sierra 10.13.6
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.
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.
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.
Boot Failure After Macos High Sierra 10.13.2 Upgrade Kit
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.
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.
Boot Failure After Macos High Sierra 10.13.2 Upgrade Free
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.