Aug 06, 2017  IF you have black screen after installing windows 10 or upgrading to windows 10 on iMac or any apple computer(with ATI graphics card). Do this to fix the i. Nov 19, 2019  When using Mac OS 10.6, it is possible to write on an NTFS drive, even without installing third-party drivers. However, the write support in the OS settings is not active. Therefore, SL-NTFS software acts as an interface for the Mac OS 10.6 NTFS drivers hence allowing writing permissions for a drive in NTFS format.

Summary: This post is about how to fix when Mac won't boot after macOS update. When the macOS High Sierra, Mojave, and Catalina update make your Mac unbootable, you'll know why and how to fix it quickly and easily.

Apple releases macOS and software updates periodically for better user experience. However, it backfires when your Mac won't boot after the recent macOS update. Especially for some Mac newbie, Mac not turning on would drive them crazy.

Hence, this post will walk you through this problem. Then, you'll know what to do when Mac gets stuck on the Apple logo.

All right. Let's begin with why your Mac is not booting up after the macOS update.

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Why is the Mac not turning on after macOS update?

It's fair enough to say, most of the time, Mac won't turn on after macOS update because of incompatibility and bugs.

As we all know, technology inspires new programs and hardware to be released constantly. So, your Mac needs to update to work with most software and hardware. Sometimes, it's an overall macOS update. And sometimes, it's a tiny patch like this.

In detail, a macOS update could involve those activities.

• Upgrade certain necessary drivers. Sometimes, it simply installs patches to fix bugs. But sometimes, it will replace the whole driver structure to better use hard drives, keyboard, mouse, microphone, camera, etc.
• Upgrade the Kernel programs. Such updates will improve the security, accessibility, and management of core data.
• Redesign or update certain built-in applications. Utilities like Disk Utility, Safari, and Mail come along with the operating system. So, it could be updated for a better user experience.
• Other updates like operating system structure, file system, user interface, etc.

These updates are usually for a better user experience. Or they are for better supporting most of the latest hardware and software.

However, as it is pointed out, the updated macOS can only work 'most' of them. For example, Nvidia GTX 750 Ti can't work with Mac OS X earlier than Yosemite. Once the third-party software and hardware on your Mac won't work with the latest macOS, your Mac won't turn on.

Common boot problems after macOS update

macOS is an improved range of Mac operating systems after Mac OS X. Up to now, there are three macOS systems available: macOS High Sierra, macOS Mojave, and macOS Catalina. Nevertheless, updating to each of them could cause problems.

1. Mac boot problems after macOS High Sierra update

One of the major updates in macOS High Sierra is the introduction of the Apple File System (APFS). As a part of the upgrade process, the macOS High Sierra installer will automatically convert the SSD to the APFS file system.

Even though Apple claims that the conversion process is supposed to be risk-free, many Mac users still meet problems. And disk corruption during the update is one of them. In this case, it's sure that the Mac won't restart after update.

Except for hard drive corruption, hardware or software incompatibility is another major reason. As your computer needs to work with so much hardware and software, the in-between conflict is inevitable. Those incompatibilities could slow your Mac down. They could make your Mac not responsive. Or, the mac would be stuck on login screen. Also, the Mac could freeze on a black or white screen of death.

2. Mac boot problems after macOS Mojave update

macOS Mojave is coming after High Sierra. Thus, the same boot problems on macOS High Sierra could also happen to macOS Mojave and MORE. As you might know, Apple introduced the System Integrity Protection (SIP) feature since OS X EI Capitan. It was originally introduced to keep system security. But once this feature was disabled previously before you update to macOS Mojave, it could cause boot problems.

For example, the Google software update on September 23, 2019, was shipped with a bug. This flaw damages the macOS file system on computers where System Integrity Protection is disabled. Many video professionals reported that their Mac crashed due to this.

So, just think about it, even Google can't avoid such software conflict, how about other third-party software? That's one of the reasons why many users who disabled SIP previously get Mac crashed after installing macOS Mojave.

3. Mac boot problems after macOS Catalina update

The third one in the macOS range is macOS Catalina. Even though it should be better than the previous two, (In some aspects, it is.) negative things like Mac won't boot after macOS update still occur.

Except for APFS conversion, the macOS Catalina update will automatically divide your hard drive into two volumes. One is the read-only Macintosh HD system volume, and the other is Macintosh HD - Data for saving your files. But if there is not enough free space for an update, your Mac will get stuck on a update loop.

What's more, the 'Full Disk Access' permission might be a lion in the way for some unauthorized applications. For instance, you have a program that requires certain Kernel extensions. But after updating to macOS Catalina, this program can't access the Kernel resource anymore. It doesn't have permission. As a result, your Mac will be frozen at the loading bar because this program keeps asking for resource permission.

A Complete List of macOS Catalina Problems and Solutions

It talks about macOS Catalina problems including downloading, installing, apps not working, not booting, battery issues and so on. Read more >>

What to do if Mac can't turn on after macOS update?

Having discussed why Mac won't boot after macOS update, you may find that it's tricky to hit the point. But don't worry, here are some inspirations so that you can troubleshoot this issue step by step:

1. Check if the Mac hard drive is corrupted
2. Check if any program is not compatible with your macOS
3. Check for a hardware incompatibility

Step 1: Check and repair the Mac hard drive in Recovery Mode

If your Mac refuses to boot after the update, you should check the Mac hard drive. Chances are that your MacBook ran out of power and the APFS reformatting process was interrupted. Or the hard drive is corrupted for bad sectors.

In this case, you can try to repair the hard drive with Disk Utility under Recovery Mode. Samsung ml 2010 printer driver for mac. It's a built-in free disk repair tool on your Mac.

1. 1. Restart your Mac and immediately hold Command + R to boot into Recovery Mode. When you see the Apple logo, release these keys.
2. 2. After the macOS Utilities menu appears, click Disk Utility.
3. 3. Click Continue and then click on the macOS Startup Disk (Often labeled Macintosh HD).
4. 4. Click First Aid and click Run to repair the disk errors on your Mac hard drive.

Tips: If the Disk Utility fails to repair the hard drive, you should get your files off the corrupted hard drive and reformat it.

If no disk error was found by Disk Utility, then the hard drive should not be responsible for this issue. To find out why you can't turn on your Mac after macOS update, you can try Safe Mode.

Step 2: Boot your Mac into Safe Mode

You may be wondering 'why should I do this in Safe Mode?' The reason is that Safe Mode will only launch some basic necessary programs at startup. It’s easier to isolate incompatibility software that makes your Mac unbootable.

Make sense, right? Then let's dive into details on how to do this.

1. 1. Press and hold the power button until the Mac forcibly shuts down.
2. 2. To start the Mac up in Safe Mode, restart this Mac with Shift key pressed and held.
3. 3. Release the key when you see the progress bar.

If you boot into Safe Mode successfully, you'll see Safe Boot at the right top. At least, it indicates that the macOS update is not failed. Then, it should be third-party software incompatibility.

But to figure out exactly which program makes your Mac unbootable, you need to reboot into Verbose Mode. Verbose mode allows you to see what's happening when macOS is starting up.

You can hold Command + V at startup. Then you'll see a live report when your Mac is booting up. Once you find out the culprit, you can simply uninstall the software in Safe Mode

But if you fail to boot into Safe Mode, it means it's a macOS update failure. The system data is damaged or broken. You need to reinsall the macOS in Recovery Mode. You can simply boot into macOS Recovery Mode and choose Reinstall macOS. If you don't want to update macOS anymore, you can try your luck with using APFS snapshot to recover your system.

The point is that macOS reinstallation will risk your data on the Mac. Thus, you should first check your backups. Or you can recover data from the Mac hard drive first.

Tips: You can prevent APFS conversion with Startosinstall this time if you want to avoid unnecessary problems. But you are not advised to unless you are a Mac command geek.

Step 3: Ask Apple repair store for help

The toughest thing is that your hard drive is fine. And there is no software incompatibility noticed in Verbose Mode. In this case, you should check the hardware inside your Mac.

The reason is that macOS updates are always for better supporting the latest software and hardware. So, the hardware or drivers on your Mac may be too outdated to work with the newer OS.

In this case, you can ask help from the Apple repair store and reset the Mac. If it's the Mac machine itself is too old, you should replace it with a newer Mac model. Or you simply don't allow automatically update the macOS.

How to recover lost data when Mac not booting after macOS update?

When Mac can't turn on after macOS update, you'll worry about your files on the Mac. If you have backed up your files with Time Machine external hard drive, it should not be a worry.

Tutorial to recover lost data with Time Machine

It's nice if you have backed up your Mac with Time Machine before you proceed to macOS update. You can restore the files that you have saved with Time Machine easily.

Here is how to do it:

Step 1: Restart this Mac and immediately hold Command + R to boot your Mac into Recovery Mode.

Step 2: Choose Restore From Time Machine Backup in macOS Utilities and Click Continue.

Step 3: Choose the Time Machine drive you back up files and select files you want to restore.

Step 4: Click Continue and wait for the restoration to complete.

But if you don't have a backup, Mac data recovery software like iBoysoft Mac Data Recovery is a good tool to recover lost files from unbootable Mac.

iBoysoft Mac Data Recovery is a powerful Mac data recovery software. It can recover lost data from unbootable Mac mini/MacBook Pro/MacBook Air/iMac. It's powerful in data recovery from failed internal Mac hard drive, from Mac startup disk, and from unmountable Macintosh HD. Moreover, iBoysoft Mac Data Recovery is one of the most powerful APFS data recovery software in the market. It can recover lost data from APFS drives, APFS encrypted partitions, and deleted APFS partitions.

Best Mac Hard Drive Data Recovery Software - iBoysoft Mac Data Recovery

• Recover lost data from unmountable/unreadable/corrupted/failed Mac hard drives.
• Recover lost data from unbootable/crashed Mac computers.
• Recover documents, photos, audio files, videos, emails, etc. from Mac.
• Supports Mac mini/MacBook Pro/MacBook Air/iMac.
• Supports data recovery from the latest macOS

Read-only & risk-free

You can use iBoysoft Mac Data Recovery to get files off the unbootable Mac in two ways.

Tutorial to rescue data when you only have the unbootable Mac

This solution helps when your only Mac fails to install macOS update and won't boot. You can run iBoysoft Mac Data Recovery in Recovery Mode to recover your lost files from this unbootable Mac.

1. Press Command + Option + R keys when you reboot this unbootable Mac.

2. Click Utilities in the top menu and select Terminal from the drop-down menu.

3. Run the following command:

This will launch iBoysoft Mac Data Recovery through iBoysoft Server.

4. After launching iBoysoft Mac Data Recovery, please select the drive you want to recover lost data from. And then you can click the Next button.

5. Preview and choose the files you want to get back and click the Recover button.

Tutorial to rescue data with an external bootable drive

Check if you have two Mac computers or you can borrow one from your friends. If so, there's a feasible way to recover your files from the unbootable Mac computer. That is to create an iBoysoft bootable recovery drive on the healthy Mac computer. And then you can recover lost data with iBoysoft Mac Data Recovery.

Step 1: Download and install iBoysoft Mac Data Recovery on another usable Mac computer.

Step 2: Click iBoysoft Data Recovery on the menu bar and then select Create Boot Drive.

Step 3: Insert a USB drive into this healthy Mac computer.

Step 4: Follow the wizard to create a bootable recovery drive.

Step 5: After that, please insert iBoysoft Data Recovery bootable USB drive into the unbootable Mac computer. And then, you can press the Power button and Option key (⌥) to start the computer up.

Step 6: Select iBoysoft Mac Data Recovery from the boot options.

Step 7: Follow the wizard to scan for lost data on the unbootable Mac computer.

How to avoid macOS update failure?

Every time there is a new macOS update available, you’ll receive a notification. It asks 'Do you want to restart to install these updates now or try tonight?'. However, it's not safe to update directly because your Mac could get stuck on update or even lose important files. In case the Mac won’t boot after macOS update, you surely can do some preparations in advance.

• Read several reviews from tech enthusiasts to learn problems when a new macOS beta is released.
• Make sure your Mac model and its hardware work with the updated macOS.
• Read macOS update instructions carefully when you are up to update.
• Back up your files, photos, documents, etc.
• Make sure there is enough free disk space for macOS update.
• Make sure your Mac is connected to power during macOS update.

So, you'd better do these preparations before you update to any operating system. But if your Mac can't boot up already, you should calm down and follow this guide to fix this issue. If you have any more any feasible solution to enrich this article, kindly drop us a hint at [email protected]

The released macOS Catalina 10.15 has many easy-to-use features, for most part. But sometimes, things happen that can really turn you into trouble. One of things is when you upgrade to macOS Catalina, your external hard drive shows read-only such as WD My Passport external hard drive suddenly becomes read-only on Mac. This problem is caused by various reasons, so here we will analyze some common causes and offer three feasible solutions.

1. External hard drive is formatted to NTFS.

In most cases, this happens if you are switching the external hard drive between Mac and Windows. It is because the external hard drive is formatted to NTFS for Windows. By default, macOS Catalina only enables NTFS read support, but disables NTFS write support. You check the information in Disk Utility.

Solution: Install NTFS for macOS Catalina

iBoysoft NTFS for Mac is a comprehensive NTFS for Mac program in the market to enable you easily to read, write, edit, delete, copy files from NTFS drives on macOS Catalina 10.15.

Besides, iBoysoft NTFS for Mac offers complete NTFS for Mac solutions in Catalina 10.15/Mojave 10.14/High Sierra 10.13/Sierra 10.12 and Mac OS X El Capitan 10.11/Yosemite 10.10/Mavericks 10.9/Mountain Lion 10.8. It enables you to unmount, eject, erase and repair the NTFS volumes. Also, it can list and open all attached external drives like USB flash drives, SD cards, external hard drives, etc. If necessary, you can reformat other file systems to NTFS with iBoysoft NTFS for Mac as well.

Tutorial to write to NTFS external hard drive on macOS Catalina with iBoysoft NTFS for Mac

Step 1: Download and install iBoysoft NTFS for Mac on Mac running macOS Catalina.

Step 2: Launch iBoysoft NTFS for Mac and connect the NTFS external hard drive to Mac.

Step 3: Write to NTFS external hard drive after the drive is mounted successfully.

2. Access permission not ignore

In order to protect files for multiple users, macOS has set access permission for all files, folders as well as external drives on the system. If the access permission is set up, it will prevent access to the files on the disk or to the disk itself.

Solution: Ignore permissions on external drives in Finder

There is a setting to ignore permissions on external drives on macOS. Tofix read-only external hard drive on Catalina, you can simply find the option and the external drive will be fully accessible.

Step 1: Select the external hard drive on your desktop or in the Finder sidebar, and then press Command-I to get information on the drive.

Step 2: Click on the arrow that is at the left side of the 'Sharing & Permissions' tab near the bottom of the window.

Step 3: Check the box to 'Ignore ownership on this volume', or toggle it off and then on if it's already enabled.

3. Check errors on the external hard drive

Some minor formatting errors will lead to read-only external hard drive. When these errors occur, to prevent further data corruption, the operating system will mount it in a read-only state.

Solution 1: Repair the external hard drive via First Aid

Step 1: Open Disk Utility.

Step 2: Select the read-only external hard drive on the left window.

Step 3: Click First Aid in the top center and choose Run.

Solution 2: Reformat the external hard drive

If Disk Utility fails to fix the read-only external hard drive, we should consider wiping the drive and repartitioning it. But if you have important data on the external hard drive, you'd better recover lost data on macOS Catalina withiBoysoft Mac Data Recovery.