Apple’s latest macOS, Catalina, has just been released to the public last October 7, 2019 and you can now install it on your Mac, as long as your device meets the hardware requirements. First revealed during the WWDC 2019 conference in San Jose, California, macOS Catalina introduces some new exciting features and functionalities.
As we say goodbye to iTunes, macOS Catalina brings in new apps and features to the table, including Apple Music, Podcasts Books, and TV. Another major feature is Sidecar, which can turn your iPad into another display. For ordinary users, this means getting a secondary display for free. For developers, on the other hand, this secondary screen can be used as a drawing tablet using supported apps.
With the release of macOS Catalina 10.15, a lot of Mac users are enthusiastic to install the newest Mac operating system. Just like the previous versions of macOS, some were able to upgrade without a hitch, but several users encountered various issues during downloading and installation of the update.
Some users experienced slow downloading of the update, while others got error messages when installing Catalina, including:
- Storage system verify or repair failed
- This copy of the Install application can’t be verified. It may have been corrupted or tampered with during downloading.
- An error occurred while preparing the installation. Try running again.
- Copy of install macOS application is damaged and can’t be used to install macOS.
- There is not enough free space on the selected volume.
Testing conducted by Apple in October 2020 using preproduction MacBook Air systems with Apple M1 chip and 8-core GPU, as well as production 1.2GHz quad-core Intel Core i7-based MacBook Air systems with Intel Iris Plus Graphics, all configured with 16GB RAM and 2TB SSD. Tested with Shadow of the Tomb Raider 1.0.1 using the built-in benchmark, at. Manual-apple-error-codes Identifier-ark ark:/13960/t2t44z77s Ocr ABBYY FineReader 8.0 Ppi 600. Plus-circle Add Review. Download 1 file.
This guide will give you a detailed rundown of the most common macOS Catalina installation and update errors encountered by Mac users when upgrading or installing macOS Catalina, along with the instructions on how to deal with these hiccups.
Why macOS Catalina Won’t Install
Various problems can occur during the installation of macOS Catalina. If the installation won’t start, seems to freeze midway , or never seems to complete, then it means that there must be something wrong somewhere.
The first main reason why users can’t install macOS Catalina is compatibility problem. If your Mac doesn’t support macOS Catalina, you won’t be able to proceed with the installation. You need a fairly recent Mac to be able to run macOS Catalina. Here are the Mac models that support the newest macOS:
- MacBook (2015) and later
- MacBook Air (2012) and later
- MacBook Pro (2012) and later
- Mac Mini (2012) and later
- iMac (2012) and later
- iMac Pro (2017) and later
- Mac Pro (2013) and later
If your device is not on this list, then you’re sure to run into problems when installing Catalina.
Another thing you need to check before installation is your available storage space. You will need around 6.5 GB just to download the installer. Once you’ve downloaded it, the amount of space you will need during the installation depends on whether you’re doing a clean install or an upgrade.
A clean install will eat up around 20 GB of storage. On top of that, you have to make room for apps, user data, and user updates. An upgrade install, on the other hand, will only take up 6.5 GB of space for the installer, plus some installation files that the installer will copy to your startup drive.
If you’re tight on storage space, you should consider removing unneeded apps and files on your Mac. You can uninstall the apps one by one, and delete cache files and data using Outbyte MacRepair. Make sure you have at least 25 GB of free space to be able to install macOS Catalina successfully.
Aside from compatibility issues and insufficient storage, poor internet connection, incomplete or corrupted installation files, hard disk problems, and faulty software can also cause issues during the installation of macOS Catalina.
Installation Checklist for macOS Catalina
Before proceeding with the installation, it is necessary to spend some time ticking off the checklist below. These steps will not only prevent errors from happening, but also ensure that your data remains safe in case something goes wrong.
- Back up your Mac, especially your iTunes media library since Catalina will no longer have iTunes.
- Take note of the 32-bit apps on your Mac . You will need to update them to the 64-bit version after upgrading, or find an alternative for them.
- Delete old Install macOS files from your Applications folder. These old macOS installation files may cause error during the upgrade.
- Remove all external drives and accessories.
- Plug in your Mac’s power adapter.
- Connect to a stable Wi-Fi network.
Once you’ve completed these steps, you can now proceed with the upgrade.
How to Upgrade to macOS Catalina
The easiest way to download and install macOS Catalina is through the App Store on your Mac. Just open the App Store and search for macOS Catalina. Click the install button to start downloading, then click Continue.
You can also visit the macOS Catalina website and download the installer from there. The installer will be downloaded to the Applications folder on your Mac. Once downloaded, the installer will open by itself. Just follow the onscreen instructions to proceed with the installation. You might be asked to log in using your admin username and password during the process.
As long as your device is compatible with Catalina and you’ve followed the instructions, you’ll be able to successfully install the new macOS on your Mac. But if you encounter any error during the download or installation, refer to our guide below to sort out the issue.
How to Fix Common Download Errors for macOS Catalina
Downloading the installer is the first step of the installation process. The installer takes up 6.5GB of storage, but you will need more space to be able to run the new macOS smoothly. If you have Automatic Updates enabled, the installer might already be downloaded on your device.
If the installer has not yet been downloaded, go to the Apple menu > System Preferences > Software Update to download Catalina.
If the downloading process gets stuck or is taking a long time to complete, here’s what you can do:
- Go to the Apple Server status website and check if the macOS Software Update‘s button is green. If not, then there’s probably some issues with the website, so you might need to try upgrading some other time.
- If the macOS Software Update is green, but you’re still having download problems, check your internet connection. Consider switching to a wired internet connection if possible.
- If the download is stuck for a long time, cancel it by clicking the X button.
- Switch to a different DNS server and retry the download again.
It might take a few attempts for the downloading to be successful, especially in the early days of the release of the update.
How to Fix Errors When Preparing for the Installation of macOS Catalina
Once you have successfully downloaded the installer to your device, the system then prepares your Mac for the installation process. There are users who encountered errors during this stage and came across the Error occurred preparing the installation. Try running the applicationagain message.
The first thing you need to do when you encounter this error is to reboot your Mac. You might need to restart your system a couple of times to deal with this problem. If the error doesn’t go away after rebooting, here are some steps you can try:
Check Your Mac’s System Date and Time.
An incorrect system time usually gets in the way of a lot of system processes, including updates. To make sure your Mac’s date and time are correct, follow the instructions below:
- Go to the Apple menu > System Preferences > Date & Time.
- Tick off Set Date and Time Automatically.
- If the option is already checked, uncheck it then reboot your Mac.
- Go back to the Date and Time panel and check the option again.
- Next, try re-installing macOS Catalina.
Re-Download the Installer.
If the step above did not work, you might have to delete the macOS Catalina installer on your Applications folder. Find the Install macOS file in the Applications folder and move it to the Trash. Empty the Trash and reboot. Once your Mac restarts, try downloading the installer and then run the install process again.
Delete the Installinfo.plist File.
If you encounter the Copy of install macOS application is damaged and cant be used to install macOS error during the preparation of the installation, the best workaround is to delete the installinfo.plist from the installer package, then try re-installing.
To delete the installinfo.plist file, check out the steps below:
- Go to the Applications folder and look for the installer package for macOS Catalina. It is usually named Install macOS.
- Right-click on the file and select Show Package Contents.
- Click on Contents > SharedSupport.
- Delete the Installlnfo.plist inside the folder.
- Type in your admin password to confirm the action.
- Click on the installer to run it again.
How to Fix Catalina Installation Errors on Mac
After preparing your Mac, the system then proceeds to the installation process. There are different errors you might encounter at this stage, so you need to take note of the error message and at which stage it happened.
Here are some of the errors you may encounter during the installation process.
Stuck at Setting Up Screen
When you’ve been stuck with the Setting up your Mac message for several hours or you encounter the dreaded spinning wheel, the best way to deal with this is to restart your device. Press the power button to shut down your Mac, then press it again to reboot.
Storage Space Problems
If you failed to optimize your storage space before the installation, you might come across errors related to insufficient storage space. You might see the macOS Could not be installed, the target disk is too small message or the There is not enough free space on the selected volume error.
This happens because you do not have enough space on your Mac. Free up some storage first before proceeding with the installation. You might need around 20GB to 25GB of space for macOS Catalina to run efficiently on your Mac.
Network Access Error
If you see a Code=551 error anytime during the installation process, you need to check your network settings. This error happens to devices with overactive firewall or those installed with third-party security software, such as VPN and antivirus. If this happens, disable this software first before trying to reinstall macOS Catalina.
Installation Doesn’t Complete
Sometimes, your Mac gets stuck with the x minutes remaining screen during the installation. When you encounter this problem, click the X button to exit the installation process and check your console logs. It is possible that your user account is corrupted, preventing your system from completing the installation process.
The only way to deal with this is to create another admin user account and install macOS Catalina using that account.
Mac Fails to Start After Update
You might think that everything is over once you finish the installation process and your Mac restarts. But sometimes, errors can still happen even after the installation has been completed. Some users reported getting stuck with a black screen, while others encounter the spinning wheel during the restart following the update.
This error is usually caused by incompatible or corrupted kext files. Kext or Kernel Extension files are the drivers for macOS. To check whether kext files are causing the error, move all of them out of your Extensions folder before rebooting your Mac.
To move your kext files, follow the steps below:
- Boot your Mac into Safe Mode by holding down the Shift key until you see the Apple logo.
- Open Terminal under the Utilities folder, then copy-paste the following command:
mkdir ~/Extensions-Backup && sudo mv /Library/Extensions/* ~/Extensions-Backup/
Once done, restart your Mac in normal mode and see if it goes through.
If All Else Fails, Do a Fresh Install.
If you’re still having issues despite following the guide above, you may need to do a fresh install of macOS Catalina. To do this:
- Shut down your Mac.
- Press Power + Command + R keys to bring up the macOS Utilities screen .
- Click Reinstall macOS.
- Select Disk Utility > Erase HDD.
- Install the macOS Catalina from here.
Remember that erasing your HDD will delete all of your files and settings, so make sure you have a backup before doing a fresh install. This should hopefully take care of common macOS Catalina installation problems.
Summary: This blog offers one of the best solutions for resolving a flashing question mark (?) folder problem on Mac screen.
And while you deal with this problem, you may face data loss situation due to corruption or inaccessible media. So, we also cover along data recovery solution for Mac hard drives.
Do you know Stellar Data Recovery Professional recovers data from a non-booting Mac as well? Free download to know more.
When I turned on my MacBook Pro, a flashing folder with a question mark came on the screen. That stayed there for a few seconds, but the Mac booted later on. Is there an issue with my MacBook Pro? Any suggestions…
Yesterday, after I turned on my MacBook Air, it displayed a flashing folder with a question mark. It didn’t boot so I had to force shut down. Then on, I didn’t start the MacBook. I don’t know what’s going on. Any clues on how to fix this?
In this blog, we will help you resolve the problem of ‘flashing folder with a question mark sign’ on your MacBook or iMac. And while you deal with this problem, you may come across the possibilities of data loss due to corruption or inaccessible media. So, we also cover along data recovery solution for Mac hard drives.
Let’s begin with the reasons for— why your Mac is flashing a question mark folder?
Flashing folder with a question mark (?) error may occur if the Mac cannot detect its boot directory. This can happen in the following situations:
- Mac cannot find the Startup Disk i.e. Macintosh HD
- The macOS is corrupt
How to Repair Mac Flashing Question Mark Folder?
Following are the scenarios you would face in the ‘MacBook flashing folder question mark’ situation, along with the solutions you can use to tackle them:
Case 1: When MacBook displays the error for a few seconds but boots
Step 1: Go to Apple menu > SystemPreferences > StartupDisk.
Step 2: Click the icon of the Startup Disk that is generally named as MacintoshHD.
Step 3: Click Restart; your Mac won’t display flashing folder with question mark again
Case 2: When MacBook displays the error but does not boot.
A) Force Shutdown and Enter macOS Recovery Mode
Step 1: Press & hold the power button for a few seconds to force shut down the MacBook.
Step 2: Power on the Mac and immediately press & hold Command + R keys until Apple logo, spinning globe, or firmware password prompt appears.
a) When prompted, select a Wi-Fi network. You’ve entered into macOS recovery mode.
Step 3: When macOS Utilities appears, go to Apple menu > StartupDisk.
Step 4:Click the Startup Disk (Macintosh HD), and then click Restart.
If the Startup Disk icon is not visible in the Startup Disk window, then likely the Startup Disk is facing a problem. Try repairing it with First Aid, as follow:
B) Repair Startup Disk
Step 1: In the macOS recovery mode, go to macOS Utilities and click DiskUtility.
Macbook Air Versions
Step 2: From the left pane, select the Startup Disk (MacintoshHD).
Step 3: Click the First Aid tab and then click the RepairDisk button.
Step 4: Exit DiskUtility once the repair process is over.
Step 5: Go to Apple menu > Startup Disk then select the Startup Disk (Macintosh HD) and Restart.
If the Startup Disk is still not visible after repair, then you would need to reinstall macOS to solve the ‘Flashing Folder with a Question Mark’ problem.
Also Read: 8 Best Ways to Recover a Failed Internal Mac Hard Drive
C) Recover Data from macOS
Step 1: Back up the MacBook data [critical step]
This is critically important because if you reinstall the OS without first backing up the data, it will result in data loss due to overwriting. So, back up the data present in the Startup Disk to another functional Mac (Target Disk Mode), as follows:
Step I. Connect the Mac that has flashing question mark to another Mac via Target Disk Mode.
Step II. Easily get the Stellar’s data recovery software from the below:
Step III. Install Stellar Data Recovery Professional for Mac on the working Mac.
Step IV. Launch the tool, and from the main interface, select RecoverData.
Step V. Select the type of data and the location of the flashing question mark drive.
Step VI. Click Scan after you turn on the DeepScan feature for rigorous searching.
Step VII. Click Recover, and on the dialog box, specify the save location and click Save. The ‘save’ location can be the working Mac’s internal drive if it has sufficient space or else another external drive.
For quick walkthrough on how to use the software for MacBook data backup, see the following video:
Step 2: macOS Reinstallation
After the data stored on the HD – having flashing question mark folder problem – is backed up, proceed with reinstalling macOS, as follows:
- In the macOS Recovery mode, go to macOS Utilities and click Reinstall macOS.
- Click Continue then select Macintosh HD (Note: You have already done the Mac data recovery to an external storage drive.)
- Erase Macintosh HD and execute the on-screen steps to reinstall macOS. Once the installation is over, Mac automatically restarts and boots from the Startup Disk.
- In Setup Assistant, migrate your data from the source disk (i.e. external storage/HD of the functional Mac) to the internal Mac drive.
Note: When Disk Utility does not show the Startup Disk or cannot repair it, then the storage drive has hardware problems. Contact a Mac repair service provider in this scenario.
Free Downloads Macbook Air
The article elaborated various methods to repair flashing question mark folder screen on Mac. The first case occurs when your Mac shows a flashing folder with a question mark for a few seconds. In this case, you reselect the Startup Disk from system preferences.
The second case happens when your Mac is stuck in the flashing folder with a question mark without booting. In this case, you need to enter the macOS recovery mode and reselect the Startup Disk. If it’s not visible, then try repairing it with Disk Utility.
Macbook Air Apps Download
If the Startup Disk repair fails, then you would need to reinstall macOS to overcome this problem. But, before that, it’s critical to back up the data stored on this hard drive, as reinstalling macOS will simply overwrite the existing data.
So, connect the affected Mac to a functional Mac via Target Disk Mode, install Stellar Data Recovery Professional software on this working Mac, and then run it on the affected hard drive to extract and backup all the data to a secure location. Once the data is backed up, reinstall the macOS on the drive to fix the flashing folder with a question mark issue on Mac.