Useful Solutions to “Mac Won’t Restart After Mac Update” If your Mac powered device isn’t booting up after a recent update, there might be some issues with the device or the update. If Mac stuck on restart after update make sure you follow the solutions mentioned below before you take it to an engineer or service center- Solution 1. Restart Mac; Problem 18. Keyboard Not Working after Updating to macOS Catalina 'I have install Catalina, i have install the first update, now is not working the keyboard en the mousepad, now i'm use a extern keyboard(usb) but can not use the command ctrl-r for a reset, what can i do?' If you're positive that the Mac isn't still working on updating your software then run through the following steps: 1. Shut down, wait a few seconds, then restart your Mac.

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

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.

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.

This article explains how you can fix if cellular data is not working on your iPhone or iPad. This is an important problem. Cellular data is how your iPhone or iPad access the internet by using the cellular data network offered by your carrier such as Verizon, AT&T, when there is no Wi-Fi. This means that, if you are having this problem, you will not be able to send iMessages, use FaceTime, send emails, watch YouTube or Netflix and much more when your iPhone or iPad is not connected to a Wi-Fi connection.

See also: No Service Or Searching On iPhone?

Here is how you can fix this:

After trying each step below, test your device again to see if you’ve fixed your cellular data issue.

Are you really sure that cellular data is not working? Before you go further, please make sure that:

• iPhone or iPad cellular data is turned on. On your device, go to Settings > Cellular (or Mobile Data or Cellular Data) and ensure that the cellular data option is enabled.
• You are in a covered area especially if you see no signal bars.
• You have cellular data turned on for the app if you are experiencing this issue with a particular app.

See also: Cellular Data For Apps Keeps Turning Off On iPhone

1. Airplane Mode.

On your iPhone or iPad, go to Settings and turn on Airplane Mode. Wait 30 seconds. Then turn off Airplane Mode.

2. Restart your device.

Here is how you can restart your device:

• iPhone X, 11 or later and iPad with Face ID models: Press and hold the power (side or top) and volume up (or down) together until you see the power off slider. Then drag the slider. Wait 1 minute until your device completely turns off. Then press and hold the power button until you see the Apple logo.
• Other iPhone or iPad models: Press and hold the power button (side or top) button until the power off slider appears. Then drag the slider. Wait 1 minute. Then press and hold the power button until the Apple logo appears.

3. Update your carrier settings.

Sometimes your carrier may release updates that are designed to improve your cellular data performance. Check to see if there is an update and if there is an update, update your carrier settings. Here is how:

• Make sure that your iPhone or iPad is connected to a Wi-Fi network since cellular data is not working.
• On your device, go to Settings > General > About. A popup will appear if there is an update available saying “Carrier Settings Update. New settings are available. Would you like to update them now?” Tap Update.

Cellular update failed?

4. Update your device. Software tnc mac os x.

Update to the latest versions of iOS or iPadOS. Here is how:

• Settings > General, then tap Software Update. This will check for software updates. And if there is an update available, then follow the onscreen instructions to download and install the update.

Please note that you can also update your iPhone or iPad by connecting it to your computer.

Again for this, you will need a Wi-Fi connection.

5. Reset network settings.

Misconfigured network settings may cause cellular data connection problems. Resetting this may resolve your problem. Please note that resetting this will erase your Wi-Fi, VPN, and other network settings. Here is how:

My Mac Will Not Restart

• On your iPhone or iPad, go to Settings > General > Reset > Reset Network Settings.
• If asked, enter your passcode.
• Your device will restart.

Macbook Pro Will Not Restart

6. Contact your carrier.

So you have tried everything and still no luck? There might be a service outage or you may have an issue with your cellular provider. Perhaps the issue is not at their end. Maybe you have reached your data limit. Maybe your account is suspended. Or maybe there are outages in your area. Contact your carrier for more help.

Mac Software Update Not Working Restart Windows 10

See also: