Install Catalina Beta

2/13/2022by admin

Download macOS Catalina Beta 10.15 (19A4871) ISO Image Step 2: Download macOS Catalina DMG macOS Catalina DMG is the original file of the Mac Operating system which is available on the App Store for free for Mac users. To install the macOS Catalina public beta, you need to enroll your Mac in the free Apple Beta Software Program. Visit the Apple Beta Software Program website in a browser on your Mac. MacOS Catalina Public Beta Download Now Available. Apple has released the first public beta of macOS Catalina to users interested in running the public beta version of the next generation macOS release. Technically anyone can download and install macOS Catalina 10.15 public beta, but it’s generally only appropriate for advanced users to do so. Install media now available at '/Volumes/Install macOS Catalina Beta' This seems to be a real pain to unmount. The normal way to detach doesn't work: $ hdiutil detach '/Volumes/Install macOS Catalina Beta' hdiutil: couldn't unmount 'disk4' - Resource busy You can also try.

In this article, I’m going to show you how to download macOS Catalina DMG ISO and VMDK image for installing on VMWare or VirtualBox. macOS Catalina was released in Worldwide Developer Conference (WWDC19). The latest version of this OS is macOS Catalina 10.15.5 (19F101). Apple has released its new OS, macOS Big Sur on WWDC20 22 Jun 2020. If you want to try and test macOS Big Sur, follow how to install macOS Big Sur on VMware or how to install macOS Big Sur on VirtualBox guides.

Like once you try and download macOS High Sierra from the App Store or from the Apple website, it prompts to download macOS High Sierra’s some previous version or builds. That’s why we noticed a large amount of users searching to download macOS High Sierra 10.13.6 DMG File ( Direct Download ). According to Apple, each and everything is new and more advanced than macOS Mojave and macOS Catalina. Now macOS Big Sur is completely available on the App Store, in which you can download it freely. However, we will provide you the direct link for the macOS Big Sur DMG file which will help you in order to have a clean installation on Mac.

Note: Please make sure you create a backup of your system before installing every new OS.


Macos Catalina Download Dmg 10.15.6

Macos Catalina Download Dmg Download

Steps to Download macOS Catalina DMG ISO VMKD

  1. Download macOS Catalina ISO
  2. Download macOS Catalina DMG
  3. Download macOS Catalina VMDK

This is an all-in-one guide that will save your time to download macOS Catalina Image in various formats for different platforms or software.

Step 1: Download macOS Catalina ISO

  1. Download macOS Catalina 10.15.5 (19F101) ISO Image Latest
  2. Download macOS Catalina Beta 10.15 (19A4871) ISO Image

Step 2: Download macOS Catalina DMG

macOS Catalina DMG is the original file of the Mac Operating system which is available on the App Store for free for Mac users. If you have an iMac or MacBook device so you can officially download it via the app store. If you don’t have it click the link above to download it. Please be advised that read the warning paragraph before downloading all these images.

Step 3: Download macOS Catalina VMDK

  • Download macOS Catalina 10.15.5 (19F101) VMDK Latest One Part
  • Download macOS Catalina Beta VMDK in 5 Parts
    • macOS Catalina Beta Part 1
      macOS Catalina Beat Part 2
      macOS Catalina Beta Part 3
      macOS Catalina Beta Part 4
      macOS Catalina Beta Part 5

Disclaimer: All the content of this site is copyright protected. If anything from this website is copied somewhere, the website link must be mentioned. Otherwise, the targeted website who copied the content will be reported to corresponding copyright law or at least some search engines like Google and Bing. This ISO, DMG, and VMDK image are created only for testing & education purposes, so the miss-use of the image is not tolerated, and it’s not our responsibility.

Related: Install macOS Catalina on VMWare -Windows
Related: Install macOS Catalina on VirtualBox -Windows


At the summary of this post, you should have downloaded macOS Catalina DMG, ISO, and VMDK Image. The ISO and VMDK file which is linked for download in this post is up to date and currently the latest version of macOS Catalina.
If you’ve any suggestions or any topics that you want us to cover in the next article, please let us know via the comment section below this post.

While the June WWDC announcement of Apple’s new operating system excited nearly all Mac fans, the official macOS Catalina release date is set for around September — a long time waiting.

The good news is you don’t have to sit around for months to get your hands on all the upcoming features — it’s possible to download macOS Catalina beta right now. Don’t know how? Go through our complete set of instructions below and enjoy Catalina public beta today.


Install macOS Catalina Beta Step By Step

Every new macOS undergoes the same process to get to the market. After the initial development, Apple itself alpha-tests the system first. At this stage, the product is not yet announced and there’s no way for us to get it.

However, right after the first public presentation (usually at WWDC) the macOS becomes available to all the tech enthusiasts worldwide as a developer beta — still buggy and unstable. The public beta, which is much more polished and user friendly, gets released a few weeks later. And luckily macOS Catalina public beta is already available now.


1. Be sure to back up your Mac

First, remember to never update the operating system (or any crucial files) without backing up all your data. Having a proper backup is even more important when you’re trying to install a yet-no-so-tested macOS Catalina beta. Without a safe haven somewhere outside of your Mac, it only takes a single corrupted system file for you to lose everything.

What if you don’t have a backup solution in place? Don’t worry; there’s one pre-installed on your Mac by default — Time Machine. To back up files:

  1. Launch Time Machine from System Preferences.
  2. Connect an external hard drive to your Mac.
  3. In Time Machine, click Select Backup Disk…
  4. Pick the drive you’ve just plugged in ➙ Use Disk.
  5. The backup will start automatically.

Now, in case something goes wrong, you have all your files ready to go in a safe place. To recover something specific:

  1. Make sure the app you want to roll back is active.
  2. Go to Applications and open Time Machine from there.
  3. Scroll back to the version you like and click Restore.

2. Clear all legacy files before updating

As macOS Catalina public beta is still a brand new framework for your Mac, it’s a good idea to make sure you’re not transferring all the outdated system files and caches over. Why give your computer a new life only to knowingly slow it down with the junk that has accumulated there for years?

User cache files
System cache
Outdated logs from the old OS
Old updates

These system junk files may compromise the performance of your new macOS Catalina. For example, the remains of your old apps will likely interfere with the newly installed software. CleanMyMac X is a great one-click automatic optimization solution here. And it’s notarized by Apple. Instead of googling every system file and folder that is safe to axe, you can tidy them up in seconds:

How to install catalina beta on external drive
  1. Run CleanMyMac — here’s a link to a free edition of the app
  2. Click System Junk and remove the suggested items

In my case it’s 8.53 gigs of redundant stuff I can delete!

Just like that your Mac is now much faster and free from technical debt. If you want to dig even deeper, repeat the process with the Maintenance tab instead. Now back to macOS Catalina.

3. Install macOS Catalina beta

You might think that the process for upgrading to beta is the same as when you simply get the new macOS. But if you check Software Update in System Preferences, you’ll find nothing available for download. That’s because installing all betas goes through the Apple Beta Software Program:

  1. To enter the beta program, visit and sign up with your Apple ID.
  2. Agree to all the terms.
  3. In the Get Started section, click the link to enroll your Mac.
  4. Under “Enroll your Mac”, find the “Download the macOS Public Beta Utility” button.

After the new macOS package is downloaded on your Mac, the process is similar to installing any other software:

  1. Open the public beta utility package (.dmg).
  2. Follow the prompts: agree and install.

Once the installation starts, it’ll take about 30 minutes and reboot your Mac at the end. Enjoy macOS Catalina!

Troubleshooting and downgrading from macOS Catalina

Historically, public betas have performed well, not counting a few harmless bugs here and there. But sometimes a beta might interfere with certain software you have on your Mac. It’s difficult to predict but entirely possible that some outdated app will start misbehaving when introduced to the new macOS.

In this case you might want to roll back to macOS Mojave. The easiest way to do this is to just restore the last backup you’ve made with Time Machine above:

  1. Insert your external hard drive and restart your Mac.
  2. Hold ⌘ + R.
  3. In the dialog window, select Restore From Time Machine Backup ➙ Continue.
  4. Choose your hard drive and the latest backup to downgrade from beta.

This is exactly why performing frequent backups is essential. To minimize the risk of some apps being incompatible with the new macOS, launch CleanMyMac X’s Updater and verify that you have all the latest versions in place.

Will I lose my 32-bit applications?

You should keep in mind that macOS Catalina will no longer support 32-bit apps. It’s a type of app architecture that is being increasingly replaced with 64-bit programs. For all of us, Mac users, it means the risk of losing some of our precious software, if the developers haven’t yet converted it to 64-bit.
1. Check your 32-bit apps

You can review your 32-bit programs with a free edition of CleanMyMac X.
Launch the app and click the Uninstaller tab.
Now, choose 32-bit apps in the sidebar

How To Install Catalina Beta On External Drive

2. Update your apps to the newer versions
And here’s a cool trick that will save you at least an hour of time. You can update your apps to the newer, Catalina-supported versions in the neighboring tab in CleanMyMac.
Click the Updater tab (below Uninstaller)
Now, tick the available updates for your Mac
Hit that large Update button

Well done, your Mac is up-to-date!

Install Catalina Beta

As you can see, there are few reasons to wait for the official macOS Catalina release date if you can try everything on offer today. Just make sure to back up your files, keep your Mac running well with CleanMyMac X, and roll back in case of any problems. Now go see what they’ve done to iTunes!

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