'this copy of the install macOS Mojave application is damaged and can‘t be used to install macOS'? 'this copy of the install macOS Mojave application is damaged and can‘t be used to. Recently purchased a new retina MacBook Air 2018 but the App Store would only install updates. If I searched for an app or Safari extension, clicking Get Install shows download icon endlessly spinning. The App Store would not download Apps or Safari extensions. Here's how to fix it. Sign out of App Store. Close the App Store. If your Mac originally shipped with macOS Mojave or earlier: Use macOS Recovery to install the original version of the OS your Mac shipped with. This will completely wipe your Mac so make sure you do a backup. If you purchase a Mac with 10.15 Catalina or later installed: Install a VM (virtual machine) on your Mac and install macOS 10.14 Mojave. Compared to the macOS version upgrades of the past few years, macOS Mojave is probably the most changed macOS upgrade. Another side, Many Mac users feedback that they failed to install Mojave on the computer for some errors. Many people are not sure if I should upgrade my Mac to macOS Mojave.

Have you ever tried updating to macOS Mojave, and then the installer returns with the message “An error occurred installing macOS” after running for a few minutes?

In another case, you might find that your MacBook suddenly becomes unresponsive after installing Mojave, taking so much time performing otherwise simple tasks. The show ends with the spinning beach ball of death appearing, staying for a few minutes.

Know that you’re not alone – the macOS Mojave install error has happened to a number of users, and it doesn’t take a lot for them to realize that the problem is likely related to the OSInstallerSetup and the whole process of migrating to Mojave in general. This article aims to be your quick guide to navigate this problem and address it in no time.

A Quick Reminder Before Troubleshooting

The macOS Mojave install error has been identified as a hardware failure in some instances, given the user’s inability to reinstall the operating system despite following the reinstall procedure correctly. Some users, for example, have received this mac error message while attempting to reinstall: “com.apple.OSInstallerSetup.error error 702.”

Below are some quick steps you can follow to solve this issue. Before going further, however, make sure that your computer is in generally good shape. A reliable third-party tool such as Outbyte MacRepair can scan it for all types of junk, optimize your RAM, and eliminate space hogs safely in order to help you proceed with the troubleshooting efficiently.

Ways to Fix the macOS Mojave Install Error

Let’s get to work and try the following steps to address the problem:

Install Mojave Using a New User

To do this, disconnect any external device from your Mac computer, such as audio devices, an external hard drive, and other peripherals. Next, try to install the software using a new user. Here are steps to create a new account for testing:

1. Choose Apple menu > System Preferences > Users & Groups.
2. Click the lock icon, and then enter an administrator name and password.
3. Click the + (Add button) found below the list of users.
4. Complete the fields for a Standard or Administrator account.
5. Click Create Account or OK.
6. Log out of your existing account and log in with the new one. Do this by choosing Apple menu > Log out.
7. Once at the login window, log in with the new account’s name and password. If you’re prompted to sign in using an iCloud account or Apple ID, skip that step.

Once done, delete the installer file and then re-download it from the Mac Store.

If the issue still happens while you’re in the new account, then that means there’s something actually going on. At this point you can try the succeeding steps.

Check Your Software Version

Are you sure that your software is up to date? If you’ve already upgraded to Mojave, keep it up to date by following these steps:

1. Choose Apple menu > System Preferences. Click Software Update to check for updates.
2. If new updates are available, click Update now to install them. Choose More info to find out details about every update and select specific ones to install.

If your Mac is up to date according to Software Update, then that means all macOS apps are also up to date, including Safari, Books, iTunes, Messages, Calendar, Mail, FaceTime, and Photos.

You can also get updates for earlier macOS version such as High Sierra, Sierra, and El Capitan by following these steps:

1. Open the App Store app.
2. Click Updates located in the App Store toolbar.
3. Using the Update buttons, download and install any updates listed.

Use Safe Mode

It’s also worth trying the Safe Mode option to resolve the issue. Also known as safe boot, it’s a way of initiating your Mac in a way that certain checks are done and the software is barred from automatically loading or opening. It can verify your startup disk and try to repair directory issues, as well as delete font cashes, kernel cache, and other system cache files.

Follow these steps to start up in safe mode:

1. Start or restart your Mac. Afterwards, immediately press and hold the Shift key. At this point, the Apple logo should appear.
2. Release the Shift key once you see the login window. For those whose startup disk is encrypted with FileVault, the user might be asked to log in twice.
3. Leave in safe mode by restarting your Mac – no need to press any keys during startup.

Now, try to install the macOS update in safe mode.

Check for Hardware Issues

Apple Diagnostics assists you testing your machine for hardware issues. Once you have isolated the issue as a possible hardware problem, you can follow these steps:

1. Disconnect all external devices except your mouse, keyboard, display, Ethernet connection, and AC power connection.
2. Keep your Mac on a hard, flat, and stable surface that has proper ventilation.
3. Shut down your computer.
4. Turn it one, and then immediately press and Hold the D key on the keyboard. Keep doing it until a screen asking you to choose your language appears.
5. The check lasts up to three minutes. If there is an issue found, Apple Diagnostics suggests solutions as well as offers references codes, which you should note before proceeding.
6. Choose from the following options:
   • Repeat the test by clicking Run the test again or pressing Command-R.
   • Click Get started or press Command-G for further information.
   • Restart your Mac by clicking Restart or pressing R.
   • Click Shut down or press S to shut it down.

Check for Software Issues

Is it a software issue bugging your system and resulting in the macOS Mojave install error and subsequent problems with using your computer? Follow the instructions on this Apple Support page to address the issue depending on whether it occurs in just one app, in different apps, or in Mac OS X.

Clean-Install macOS Mojave

Here are the steps to follow to create a bootable Mojave installer:

1. Download the new macOS from the App Store.
2. Connect a USB drive to your Mac.
3. Go to Disk Utility.
4. Click the Erase tab, and select Mac OS Extended (Journaled) in the format tab.
5. Give your USB a name. Click Erase.
6. Once done, click Done and close Disk Utility.
7. Next, launch Terminal once the USB is formatted.
8. Make sure the USB is connected. Write the commands below in Terminal, where [YOUR DRIVE NAME] is the name you provided the installer drive:

sudo /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia –volume /Volumes/[YOUR DRIVE NAME] –applicationpath /Applications/Install macOS Mojave.app

9. Hit Return. Enter your admin password and the bootable installer will be the created on the USB.
10. Once you see Done in the Terminal window, quit Terminal.

It’s time to clean-install macOS Mojave on your Mac. Before proceeding, make sure to back up your Mac to keep your important files. Continue with these steps:

1. Erase your main drive by going to System Preferences.
2. Сlick Startup disk. Select the installer you just created.
3. Restart your Mac and boot into recovery mode by holding down Command-R.
4. Take your bootable USB and connect it to your computer.
5. When the macOS Utilities screen appears, reinstall a new copy of macOS.
6. Click Continue, then click Continue again once the next window shows up.
7. Agree to the terms and conditions.
8. Next, choose your Mac’s internal drive.
9. Click Install.
10. Wait for macOS Mojave to install and your machine to restart.

Final Notes

If you’ve tried the solutions above but the macOS Mojave install error persists, perhaps it’s time to contact Apple Support or seek professional service. Follow the steps here. Make sure to also do the steps above correctly to prevent new problems from popping up.

Have you encountered this error before? What solved the issue? Let us know in the comments!

Apple’s new macOS Mojave doesn’t support the old Macs prior to 2012. It was a shocking news for me too.

You may also like to read the following posts:

I have an old, not for me actually, MacBook Pro which I purchased at the end of 2010. I was expecting Apple won’t drop the support of Mojave for MacBook Pro 2010 model, at least not for this time. But I was wrong. The latest Majove doesn’t support it too.

How To Install Macos On Pc

There is no need to worry. Even the oldest Windows 95 can be installed on Mac computer. There is a solution to every problem.

I don’t want to upgrade my MacBook Pro right now, especially when a new model is rumored to be released in next month.

Another choice for me was to buy a graphics card which supports Metal. In fact, it was the most feasible solution for to get installed Majove on my unsupported Mac right now.

Metal is natively supported by all Macs introduced since 2012. It means the following Nvidia, AMD and Intel family cards are compatible.

-Intel HD Graphics 400, Iris 5000 & 6000 family

-Nvidia GT 600M, 700M family

-AMD R9 M family

To check which GPU (graphics processing unit) is installed on your Mac computer, click on the Apple icon in the top left corner and then click on “About This Mac”.

There are a number of third-party vendors which sell graphics cards with integrated Metal support specifically designed for Mac computers. While searching for a compatible graphics card, I found that I could install Mojave on my MacBook Pro Mid 2010 model by using a software known as macOS Mojave Patcher Tool. Kudos to DosDude1 who developed tested, and released it as a free app.

By using this software, we could install the latest macOS version on early 2008 Macs.

Here is the step by step method to run Mojave on unsupported Macs.

The whole process can be divided into four parts.

• Part 1. Getting all the required things
• Part 2. Downloading the macOS Mojave Installer App
• Part 3. Making a bootable Mojave USB drive
• Part 4. Installing and Patching Mojave OS on the unsupported computer

We will discuss each part in details in the following paragraphs.

Part 1: Requirements to Run Mojave on Old Macs

Four things are required to get macOS Mojave installed on your forgotten-by-Apple Mac.

1. Your Mac computer

It could be an early-2008 or newer Mac Pro, iMac, or MacBook Pro. The following models include under this category.

– MacPro3,1
– MacPro4,1
– iMac8,1
– iMac9,1
– iMac10,x
– iMac11,x
– iMac12,x
– MacBookPro4,1
– MacBookPro5,x
– MacBookPro6,x
– MacBookPro7,1
– MacBookPro8,x

It could be late-2008 or newer MacBook Air or Aluminum Unibody MacBook. The following models include under this category:

– MacBookAir2,1
– MacBookAir3,x
– MacBookAir4,x
– MacBook5,1

It could be early-2009 or newer Mac Mini or white MacBook including the following models:

– Macmini3,1
– Macmini4,1
– Macmini5,x
– MacBook5,2
– MacBook6,1
– MacBook7,1

And it could be Xserve2, 1 and Xserver3, 1.

Is there a mac app for defragging windows disks. It can speed up the degradation of a solid state drive and lead to its wear and tear. Therefore, it's actually dangerous to attempt to defrag a SSD, which can reduce its lifespan.How to defragment a Mac?Since there's no built-in command or utility to defragment on Mac, one of the easiest ways is to use a trusted third-party defragmentation program. So if you defrag SSD, you will perform thousands of write operations each time on the drive.

2. A USB drive in 16GB size or above
3. macOS Mojave patcher tool. Download it here.
4. A copy of the Mojave software.

Part 2: Download macOS Mojave Installer Software

MacOS Mojave software can be downloaded as an Installer App from Mac App Store using the computer which supports Mojave.

If you don’t have Mojave supported Mac, you can download the Mojave Installer App using patcher tool. Open the macOS Mojave patcher tool. If it doesn’t open and says it is from an unidentified developer, right click on the tool’s icon and click on “Open” from sub-menu and then enter your Mac’s Admin name and password. After the verification, you can open it with the left double-click.

If you don’t remember your macOS password, here are the solutions to reset it.

Go to Tools in the Menu bar and then hit “Download macOS Mojave”.

I recommend using the built-in downloader tool because it will download the latest and the compatible Installer app.

Mojave Installer app is about 5-6GB in size and it may take some time depending on the speed of your internet.

If the internet connection interrupts while downloading the file, don’t worry. The downloading process will resume where it left. Simply download the Mojave software again but point it to the same location where you were already downloading and saving the installer app.

Install Macos Mojave App Not Removing Watermark

Part 3: Create a Bootable Mojave USB Drive

In order to create a bootable Mojave USB Installer drive, follow these steps.

Step 1: Insert 16GB or above USB drive into your USB port of your Mac.

Step 2: Open Disk Utility and erase the USB drive in OS X Extended (Journaled) format. Give a proper name before erasing. I gave the name “macOS Mojave” to my USB drive.

If you are new to Mac, get the basic information about how to make a Partition, erase the current partition and how to make a bootable USB drive.

Step 3: After the drive is erased, open “macOS Mojave Patcher” tool.

Step 4: Point the Patcher tool to the downloaded Mojave Installer app which is downloaded in Part 2.

Step 5: Now select the target USB drive you just formatted.

Step 6: Hit the “Start Operation” button on the patcher tool and let it make the USB bootable with Mojave.

Step 7: It will show “Complete” when the process is done.

Part 4: Installing and Patching macOS Mojave

In this fourth and final part, we will install and patch the macOS Mojave on our old Mac computer. Follow the steps below to complete the remaining procedure.

Step 1. Restart your computer and hold down the “Option” key as soon as the Mac starts up.

Step 2: Select the USB drive, which was named as “macOS Mojave” as the startup disk.

Step 3: If you want to upgrade your current macOS to macOS Mojave, simply use the continue button to proceed and follow step 5. But if you want to install it on another partition or want to erase the current partition first, then follow the Step 4.

Step 4: Open Disk Utility from the bottom left panel.

Select the volume you want to erase. Use Mac OS Extended (Journaled) format. Or if you have got late-2009 and later machines with SSD drives, you can also use APFS format.

Download Macos Mojave

If you don’t want to install Mojave on current volume, you can also create a new partition and install it there. Mojave takes approximately 18GB space on hard drive. So at least make a 25GB partition to test the new macOS.

Install Macos Mojave App Not Removing Adware

If you want to use it for all routine work, set the partition size according to your needs.

Step 5: Select the volume and press “Continue” to begin the installation process.

Step 6: The installation process takes about 20 minutes to complete. When it is done, reboot your Mac back into installer drive while holding down the “Option” key again.

Step 7: This time select “macOS Post Install” app from the bottom left panel.

Step 8: Select the model of your computer and the volume on which you installed Mojave and then click the “Patch” button. The tool will automatically select the required patches according to the model of your computer.

Install Macos Mojave On Vmware

Step 9: Press the “Reboot” button when the patch is complete.

Step 10: The computer will reboot with macOS Mojave installed on it.

Macos Mojave Iso

Step 11. If it doesn’t work properly on the restart, boot your Mac back into the installer USB drive, select macOS Post Install again, and this time also select “Force Cache Rebuild” option. Once the patch is complete and the cache is rebuilt, reboot.

Step 12: Upon restart, complete the setup process and start using your Mac with a Mojave operating system.

Install Macos Mojave On Virtualbox

Happy Mojaving!!

For additional information and to know more about the known issues, please visit DosDune1’s website. He is an awesome guy.

Note: You will see a new “Patch Updater” app in the Applications under “Other” folder. It will alert you when new patches are available for your computer.

Your Mac will get the future Mojave updates as other supported computer do. If you don’t see the updates, or your computer doesn’t work properly after applying the update, use the step 11 of Part 4 to enable all patches.