Catalina Mac Install

Download macOS Catalina from the Mac App Store Direct Link. Once the download is complete, close the installer window by selecting the Quit Install macOS option in the menu bar or using the. Install macOS 10.15 Catalina. After downloading macOS 10.15 Catalina, the installer will begin on its own and launch automatically. Follow the on-screen instructions to complete the upgrade and start using macOS Catalina. When prompted, select the internal hard drive to upgrade the Mac or an external hard drive to create an external macOS drive. You can download and install macOS Catalina from the App Store on your Mac. Open up the App Store in your current version of macOS, then search for macOS Catalina. Click the button to install,.

How to Install Git on Mac. There are many different ways to set up Git on Mac. If you prefer using a GUI, Git offers a simple installation using the installer for Mac. On the other hand, you can install Git using the terminal with a couple of simple commands. Option 1: Install Git on Mac with Installer. Download Hackintosh Catalina Installer: Catalina Installer is a distribution of macOS Catalina that has been made to work with PCs. You will need to use a BitTorrent client to download the disk image file containing Hackintosh Catalina, which is a little less than 6 GB in size. You must register on the website to be able to download anything.

Installing a new macOS version should be fairly straightforward. Simply download the OS update, follow the on-screen prompts, and you should be all set. This trend has started since Cheetah and continues with Catalina.

Even with the easy OS installation process, it’s always a wise idea to know exactly how to do a clean install of macOS. This way, you can easily give your Mac a fresh start in the event that something comes up.

When doing a clean install, the first thing you should do is create a backup of your files. For this, you can use Time Machine or other similar alternatives. As soon as you have a backup, you should be all set to do a clean install of a new macOS version like Catalina.

But it is worth noting that even if you have removed possible backup problems out of your way, there are still installation errors you need to prepare for. Let’s know more about these problems in the succeeding sections.

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Common macOS Catalina Installation Problems

There are many problems you may come across while installing macOS Catalina. These include the following:

1. Compatibility Issues

Not all Macs support Catalina. Only Macs released in 2012 or later are compatible with macOS Catalina. Here is a complete list of Macs that support the latest macOS version:

  • 12” MacBook (2015 or later)
  • MacBook Air (2012 or later)
  • MacBook Pro (2012 or later)
  • Mac Mini (2012 or later)
  • iMac (2012 or later)
  • iMac Pro (2017)
  • Mac Pro (2013 or later)

2. Disk Space Problems

To be able to download the macOS Catalina installer, you need to have 6.5 GB of free storage space. However, you have to be aware that the amount of disk space required may vary depending on the type of installation that you are doing: a clean install or an upgrade.

Generally, a macOS Catalina clean install requires 20 GB of storage space. Then again, you will need more to allocate space for other apps and future updates. An upgrade, on the other hand, requires 6.5 GB of free space plus a few more gigabytes for the files the installer will have to copy to the startup disk. For an upgrade, it’s hard to give a rough estimate about the total free space needed as many factors need to be taken into account. But to be safe, make sure you have at least 25 GB of free storage space available.

If you are tight on space and can’t proceed with the installation, you might need to install a reliable tool to get rid of unnecessary files on your Mac. One that we recommend is Outbyte macAries. In just a few clicks, this tool can identify any space hoggers on your system.

Mac Catalina Install Error

3. macOS Catalina Could Not Be Installed

Even on Macs that are fully compatible with Catalina, this problem may be triggered by the wrong Date & Time configuration. Be sure that you have set the correct date and time. Better yet, use the “Set date and time automatically” option.

4. Mac Is Frozen While Installing Catalina

If your Mac is stuck while installing Catalina, there could be many reasons behind it. While some are associated with the software, others are hardware-related. But regardless of what’s causing this problem, we can guarantee you that there is a fix. You’ll know more about it below.

What to Do When Catalina Installation Is Stuck?

Is your Mac stuck in the “Setting up Your Mac” part during Catalina installation? We suggest that you try the fixes below:

1. Restart Your Mac.

Oftentimes, your Mac gets stuck while installing Catalina because there are system processes that simply need to be restarted. All you need to do is simply restart your Mac.

You have three ways to restart your Mac. The first one requires you to press the Power button and select Restart from the list of options. The second one is about pressing the Apple key and hitting Restart. Lastly, to restart your Mac, you can press the CTRL + CMD + Eject combo.

2. Reset the NVRAM and SMC.


The NVRAM and SMC store information required when your Mac starts up. Once any of them becomes corrupted, it can cause your machine to freeze. Though resetting the NVRAM and SMC doesn’t always guarantee fixing the problem, it’s still worth trying as it has worked for some.

Here’s how to reset the NVRAM and SMC of a Mac:

  1. Turn off your Mac.
  2. Press and hold the Power button for at least 10 seconds.
  3. Release it and wait for a few seconds more before restarting your computer.
  4. If the issue persists, switch off your Mac again.
  5. Remove the power cord.
  6. Wait for 15 seconds before reconnecting the power cord.
  7. Turn on your Mac.

3. Check the Log Screen.

When you’re stuck in the “Setting Up Your Mac” part of the Catalina installation, you might want to check the Log screen. There might be missing files that need to be installed. If it shows nothing is happening, then proceed to the next possible fix.

4. Install the Combo Update Instead.


If you are having problems with installing Catalina, you can visit Apple’s website and download the Combo update. This includes all the important files required to update to the latest macOS. Downloading and installing this Combo update will replace all outdated system files.

5. Seek Help from Experts.

When all else fails, your last resort is to seek help from the experts. Take your Mac to the nearest Apple Center and have it checked by an Apple Genius. If your Mac is still under warranty, then great because this service might not cost you a lot. Otherwise, prepare to spend a few hundred bucks.

If visiting an Apple Center is not a good idea in your case, then you can reach out to Apple’s online support team. Head over to their website, answer a few questions, and you might just be given a quick fix.


Catalina installation issues are inevitable, especially considering that the macOS version is new. Lots of features still need to be checked and improved, and errors may not have been seen by the QA teams. But even if installation issues are common, they should not stop you from trying the features that the new OS has to offer. After all, the developers of the OS are constantly working to improve Catalina and are regularly releasing patches with fixes to commonly reported bugs and errors. As long as you take note of the important details and try out different solutions being shared on forums and blogs, then you should be able to enjoy Catalina the way other Mac users do.

Did you have other issues while installing macOS Catalina? How did you fix them? Leave a comment below!

Can you install macOS Catalina on an external SSD connected to your Mac? Yes, it's definitely possible. However, since Apple initiated a relatively new partition scheme (APFS) with macOS High Sierra, the process is slightly different than with older versions of macOS. This article shows you how to set up a new SSD with macOS Catalina that you can boot from.

Why Installing macOS Catalina on External SSD?

macOS can be installed on an external storage device by default, such as HDD, SSD or USB flash drive. And this priciple also applies to macOS Catalina. For permance consideration, external SSD is much better becaus of faster reading and writing speed. The good news is that external SSD is much cheaper than before and the price gap is much smaller.

Now, the big question is why you don't want to install macOS Catalina on your main hard drive. After all, if you're upgrading to macOS Catalina, you want your Mac to boot to it all the time, don't you? Not necessarily. There are several reasons why you might not want to disturb your current installation, whether it's Catalina or an older version of macOS. Here are some possible reasons.

● You might want to try macOS Catalina without having to uninstall and roll back to Mojave or High Sierra if you change your mind. Uninstalling and rolling back to an older version of macOS is time-consuming and a tedious process that is prone to errors, so you may not want the hassles that come with it.

● Your Mac (Mostly Mac Mini or iMac) is built upon on a HDD and it runs slowly. You are looking for a way to boost the performance without untouching the internal drive.

● Since there are bound to be bugs in early versions of any new OS, you might want to avoid the hassle of having it as your default OS. This way, you can update it as new versions are released, then install it as your main OS when you're happy with the stability of the software.

● You may want to have the SSD run macOS Catalina on more than one machine. Since your SSD is essentially an external drive that is portable, you may want to switch it between one Mac and the other. Instead of installing Catalina on both, you have the flexibility of simply connecting the SSD to one of the Macs when you want to boot from it.

● It's also possible that you want to run a different set of apps and, therefore, need more memory. If you use a larger-capacity SSD, this will allow you to load a ton of heavy apps like Photoshop and so on, which might not be possible with your current hard drive because it is already full of data.

How to Pick up the Right External SSD for Catalina

Mac computers are made different from PCs. It has its own hardware port and unique standards. So not all external SSDs are suitable for Macs. To maximize the performance of SSD, it should be USB 3.0 compatible, if you have enough budget, ThunderBolt port is more welcome as it has much faster reading and writing speed. Besides, the volume should be 128 GB or larger. Below is a list of best external SSDs for Mac:

Further reading: How to check hardware port on your Mac

  • Adata SD600Q External SSD 240GB (USB 3.2, $39.16)
  • SanDisk 500GB Extreme Portable External SSD (USB-C, $84.99)
  • Samsung X5 Portable SSD 500GB (Thunderbolt 3, $199.99)
  • LaCie Portable SSD STHK1000800 1TB (USB-C, $178.31 )
  • G-Technology 0G06053 Portable External SSD 1TB (USB 3.0, $189.95)
  • WD 500GB My Passport Go SSD (USB 3.0, $69.99)
  • Seagate One Touch SSD External 1TB (USB 3.0, $144.99)

Notice: The SSD you are going to use or purchase should be compatible with your Mac.

Preparation before Getting Started

To instal Catalina on external SSD, there are quite a few things you should set up previously. The preparatory steps are very important because if you don't get them right, the time spent on the rest of the process will be completely wasted and you'll have to do it all over again. For that reason, make sure you follow the steps exactly as outlined. macOS Catalina is built on a different drive partition scheme, the APFS file system. This was introduced in Catalina for Mac but it's been in iOS for quite some time. In an effort to unify its desktop and mobile operating systems, Apple has now rolled out the new system to both branches of its core OS.

1. Download Catalina DMG File: For macOS installation, you have to create a bootable Catalina USB first. To do this, you need to get a copy of the Catalina dmg file.

Download link: /macOS_Catalina_DMG.rar

2. Format External SSD to APFS: APFS is the file system that holds macOS Catalina installation. The SSD is formatted to exFAT when it is shipped. You can format the external drive to APFS with Disk Utility app.

Connect the SSD to your Mac and launch Disk Utility. Select the external drive in the left-side panel and click Erase. In the pop-up, name your drive, select APFS, and GUID Partition Map.

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3. Backup important data on your Mac: To avid data loss, it is highly recommended backing up your important data on internal SSD with Time Machine or Cloud Drive.

Catalina Mac Installer

How to Create macOS Catalina Bootable USB Installer

After completing the above preparation, it is time to get into the part for creating a bootable Catalina USB installer. This can be done easily with the help of UUByte DMG Editor, a cross-platform program for making bootable USB drive from macOS dmg file.

Step 1: Please download UUByte DMG Editor on a PC or Mac and follow the on-screen tips to install this utility on your computer..

Step 2: Plug in an external USB flash drive and eject other USB devices at the same time. Now, open UUByte DMG Editor and click Burn tab.


Step 3: In Burn page, click Browse button to add macOS dmg file you downloaded to the program. After a few seconds, you can see the USB drive in secord field.

Step 4: Set a name for the new volume and click Burn button to start writing Catalina DMG file to USB drive. The file is around 8GB so it takes about 10 minutes to finish the task. Please be patient!

Creating macOS Big Sur install USB on Windows 10 is simple with the help of UUByte DMG Editor. It is one of the best tools for managing DMG file on a Windows PC.

How to Install Catalina on External SSD

You have done all the crucial steps in above part and the final step is how to install macOS Catalina on External SSD. This process is quite simple.

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First, connect the SSD to your Mac. Then restart your Mac and hold the Option key until you see the Apple logo. In the Startup Disk, click the external drive name.

When the boot resumes, you should boot into macOS Catalina installation wizard. At this stage, you should pick up the external SSD to install Catalina.

Another way to boot Catalina is from System Preferences. Here, go to the Startup Disk section, select your external SSD, and then hit Restart. Do not hold the Option or Alt key down if you're using this method.

Troubleshooting If Catalina Installation Failed

USB not bootable: If the USB drive is not showing up in Startup Manager, this means the USB drive is not recognized as a bootable device. Please download Catalina DMG file from another source and burn it again with UUByte DMG Editor. Sometimes, the partition table is missing in corrupted or damaged dmg file.

Can not boot into Catalina partition after installation: On latest T2 chip, Mac does not allow booting from external storage device by default. You have to enable 'Allow booting from external media' in Startup Security Utility, where you can launch it in macOS Recovery by pressing and holding Command + R immediately at startup.


Once you have macOS Big Sur installer USB ready, you can insert it into any Mac and run the program to install Apple's latest desktop operating system. Big Sur is officially coming in the fall and has a ton of updated features on nearly all fronts, including the OS interface, Safari, Siri, Messages for desktop, etc. But you should also know that since the currently available DMG is only a public beta tester version, it is bound to have bugs and other issues. If you're on the beta program, you can use the feedback app to let Apple know what the issue is. Unfortunately, that also means that there's nothing you can do about it if you're not on the beta program.