Create a macOS Catalina USB Installer Using Disk Creator One of the easiest ways to create a bootable installer for any macOS update, including Catalina, is to use the Disk Creator app. It’s a simple program that allows you to load your update and then create an installer based on that update. Jun 27, 2019 A macOS Catalina USB install drive is a great tool to have on hand to for quick and easy macOS 10.15 reinstalls. We show you how in this video tutorial.

If you have more than one Mac you want to upgrade to macOS 10.15 Catalina but don't want to waste so much bandwidth downloading it for each machine, one option is to create a bootable installer on a spare USB flash drive. Here's how to do it with the Terminal.

One of the problems with the release of a major operating system update like macOS Catalina is the amount of times it has to be downloaded. As Apple usually intends each Mac or MacBook needing to be updated to download it, the process isn't really efficient enough for instances where many Mac desktops need the upgrade, like in a school or business if there isn't device management or macOS Content Caching for whatever the reason.

The strain could also be felt by users who own multiple Macs but also have a limited data allowance from their Internet provider, or a small amount of bandwidth that could make updating multiple machines take a very long time and saturate the available connection.

While in the olden days it was possible to get the software update on physical media, Apple doesn't offer that option anymore. However, it is still possible to create your own media, such as a spare USB thumb drive, that can do the same job.

The first hurdle is to actually get the macOS Catalina installer onto a Mac. This is an unavoidable part of the process and will require just over 8 gigabytes of drive capacity to store.

Go to the Mac App Store and search for Catalina using the search bar, then click on View next to the macOS Catalina listing. Alternately, open the Mac App Store Preview page for macOS Catalina here then select View in Mac App Store.

Click on Get. This will load up the Software Update utility, which will ask if you want to download macOS Catalina. Click Download.

After the download has finished, macOS will automatically start the installer. Press Command-Q to quit the installer before it continues, as the update will be deleted upon installation.

Creating the Bootable Drive

You need an external drive to turn into a bootable version, and since it needs to be portable, your best choice is a USB thumb drive with a capacity of 16GB or more. Be aware that the drive will be wiped as part of the process, so ensure there isn't any precious data on the drive that could be lost if it isn't backed up elsewhere.

Connect the external drive to your Mac, and make a note of the external drive's name as it appears within macOS. This is important, as using the wrong name could lead to another connected drive being wiped by mistake.

Open Terminal within the Utilities folder within the Applications folder and enter in the following command by copying and pasting it directly into the window. Make sure to change the element titled 'USBdrive' for the name of the drive you intend to become the bootable installer.

Once pasted and corrected, press enter, then enter your password for macOS and press enter again.

Terminal will then warn of the USB drive being wiped as part of the process. Type 'Y' and press enter. Leave the Mac alone as it formats and copies over the installer.

Once Terminal says 'Install media now available,' it is safe to right-click the removable drive on the desktop renamed 'Install macOS Catalina' and select the 'Eject' command. It is now safe to remove the drive from the Mac.

Upgrading another Mac

Before proceeding, ensure there are adequate backups available for the Mac you are about to upgrade before the process starts.

With the target Mac you want to upgrade turned off, connect your external drive. When turning on the Mac, hold down the Option key on the connected keyboard to bring up the Startup Manager.

The Startup Manager is used to boot from a different drive from the default. In this case, select 'Install macOS Catalina.'

The Mac will then bring up a macOS Utilities window. To perform a straight update, select 'Install macOS' and follow the prompts.

The macOS Utilities menu also allows you to erase the Mac's drive, which you can optionally do if you do not wish to save any of the data and want a completely clean slate for the installation.

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To create a bootable USB for MacOS Catalina on Windows has in no way been easier as it has a technical technique attached! If you’re looking ahead to create a bootable macOS Catalina 10.15 USB installation force, you’ve arrived in the right place. The technique which I actually have explained in these days’ tutorial is straightforward and quick to put into effect.

The bootable macOS Catalina USB installation drive can be both used to check on your other mac or you could additionally deploy it on a separate power. This technique will work for developer & public beta as well as the very last model which is going to be launched this fall.

How To Make Usb Bootable Os

If you want to smooth install macOS Catalina to your Mac or install it on a separate partition, you will in all likelihood need to use a bootable USB force. Using the USB pressure, you may boot your Mac, begin device healing and layout your gadget before installing the operating machine. Here is how you could effortlessly create a macOS Catalina bootable USB drive, with just a few Terminal instructions.

MacOS Catalina is the most recent version of the running machine that runs on the Mac. MacOS Catalina’s call was inspired by the aid of Santa Catalina Island, popularly known as Catalina and one of the Channel Islands off the coast of Southern California. In macOS Catalina, Apple has eliminated the iTunes app that is been a staple of the Mac running machine seeing that 2001. iTunes was cut up into 3 apps: Music, Podcasts, and TV.

You have a clue there are several ways to create MacOS Catalina USB Installer but one of the best and easiest way using Terminal on MacOS 10.15. However, you can use Disk Utility and I recommend you to choose Disk Utility because the procedure is quite easy and using Terminal is somehow complicated.

Required Files

• 16GB USB Flash Drive
• MacOS Catalina Image file

Download MacOS Catalina Image File

To create a bootable USB for MacOS Catalina you will need to download its image file, as you know on Windows there are a limit ways to install macOS Catalina. So, you can download MacOS Catalina from App Store or you can download MacOS Catalina using your developer account.

1. To download MacOS Catalina go to apple developer and download MacOS Catalina. If you don’t have a developer account then create a new account and go ahead.
2. Once you sign in with your developer account then search for macOS Catalina and click the Download button.
3. Now, wait for a while to complete the download file.

Or you can download the MacOS Catalina DMG file from the below link. the download file is saved and secure on Google Drive and MediaFire from Malware and viruses. in case, you don’t want to download from the app store then you can create a MacOS Catalina USB drive using a DMG file.

Partition USB Disk on Windows using CMD

1. Connect your USB.
2. Go to the start menu and run CMD as an administrator.
3. Then, type List Disk.
4. Afterward, type Select Disk 1 and press enter key.
5. Now, type Clean to format USB drive and press enter key.
6. After that, you need to create a partition, therefore, type Create partition primary and press enter key.
7. Then, type select partition 1 and press enter key.
8. Now, type format=fs NTFS quick and press enter key.
9. Finally, type active and press enter.

Create Bootable Disk For Mac

Create a Bootable USB for MacOS Catalina on Windows

Once you download the MacOS Catalina image file and you create a partition for your USB then follow the below instruction to create a bootable USB for MacOS Catalina on Windows. as I mentioned, we will create a USB drive using Disk Utility.

Step1: Connect your USB drive and go to Disk Utility. if you haven’t formatted your USB then you can format it here on Disk utility. Therefore, format your USB properly and make sure it doesn’t have an important file.

Make Bootable Cd

Step2: Now, open terminal on your Mac. you can do it by searching terminal on the spotlight or go to applications and find terminal.

Step3: In the terminal, enter the below command and press return. here, it will as you to enter your Mac password.

How To Make Bootable Hdd

Step4: Once the process is done then your MacOS Catalina bootable USB is ready now you can install it on your computer.

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How To Make A Bootable Disk For Mac Catalina

Conclusion

How To Make Bootable Disk

This is all about MacOS Catalina bootable USB installer, this is the easiest method and you can create a bootable USB for MacOS Catalina on Windows. after that, using USB you can install MacOS Catalina several times on your Mac or you can update your Mac to MacOS Catalina. Besides that, if you have any question then feel free to ask me in the comment box.