Apple hasn’t shipped operating systems on physical media in a full decade, but there are still good reasons to want a reliable old USB stick for macOS Catalina. Luckily, it's not hard to make one—either with a handy graphical user interface or some light Terminal use. Here's what you need to get started:

• A Mac that you have administrator access to. We've created a USB stick from both Mojave and Catalina, but your experience with other versions may vary.
• A 16GB or larger USB flash drive or a 16GB or larger partition on some other kind of external drive. A USB 3.0 drive will make things significantly faster, but an older USB 2.0 drive will work in a pinch; 8GB drives worked for Mojave and older versions of macOS, but the Catalina installer is just a little too large to fit.
• The macOS 10.15 Catalina installer from the Mac App Store (in High Sierra or older macOS versions) or the Software Update preference pane in Mojave. The installer will delete itself when you install the operating system, but it can be re-downloaded if necessary.
• If you want a GUI, take a look at Ben Slaney's Install Disk Creator from MacDaddy. There are other apps out there that do this, but this one is quick and simple.

Make sure the USB drive is connected to the Mac. Next, click on the Apple logo from the top left and choose Restart. When you hear the startup sound or see the Apple logo, immediately press and hold the Option key. Select the bootable installer as the startup disk, and follow the instructions. How to Boot with macOS Catalina USB Install Drive To boot from the MacOS Catalina boot disk, connect it to a Mac, then reboot the computer and hold down the OPTION key to boot into the boot menu, where you will be able to choose the MacOS Catalina installer drive as a boot option. Connect the macOS Catalina install drive to the target Mac. Question: Q: Create bootable macOS Catalina USB on Windows 10 My Mac got a question mark and it is flashing all the times. And the device can not get into the desktop.

If you want to use this USB installer with newer Macs as they are released, you'll want to periodically re-download new Catalina installers and make new install drives. Apple rolls support for newer hardware into new macOS point releases as they come out, so this will help keep your install drive as universal and versatile as possible.

There's also one new consideration for newer Macs with Apple's T2 controller chip—as of this writing, that list includes the iMac Pro, the 2018 Mac Mini, the 2018 MacBook Air, and 2018 and 2019 MacBook Pros, though Apple keeps an updated list here. Among this chip's many security features is one that disallows booting from external drives by default. To re-enable this feature, hold down Command-R while your Mac reboots to go into Recovery Mode and use the Startup Security Utility to 'allow booting from external media.' If you're trying to install an older version of macOS, you may also need to go from Full Security to Medium Security to enable booting, but if you're just trying to install the current version of macOS, the Full Security option should be just fine. And if you're just doing an upgrade install rather than a clean install, you can run the Catalina installer from the USB drive from within your current installation of macOS, no advanced tweaking required.

The easy way

Once you've obtained all of the necessary materials, connect the USB drive to your Mac and launch the Install Disk Creator. This app is basically just a GUI wrapper for the terminal command, so it should be possible to make install disks for versions of macOS going all the way back to Lion. In any case, it will work just fine for our purposes.

Install Disk Creator will automatically detect macOS installers on your drive and suggest one for you, displaying its icon along with its path. You can navigate to a different installer if you want, and you can also pick from all the storage devices and volumes currently connected to your Mac through the drop-down menu at the top of the window. Once you're ready to go, click 'Create Installer' and wait. A progress bar across the bottom of the app will tell you how far you have to go, and a pop-up notification will let you know when the process is done. This should only take a few minutes on a USB 3.0 flash drive in a modern Mac, though using USB 2.0 will slow things down.

The only slightly less-easy way

The Install Disk Creator is just a wrapper for the terminal command to create macOS install disks, so if you’re comfortable formatting your USB drive yourself and opening a Terminal window, it’s almost as easy to do it this way. Assuming that you have the macOS Catalina installer in your Applications folder and you have a Mac OS Extended (Journaled)-formatted USB drive (which is to say, HFS+ and notAPFS) named 'Untitled' mounted on the system, you can create a Catalina install drive using the following command.

sudo /Applications/Install macOS Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled

The command will erase the disk and copy the install files over. Give it some time, and your volume will soon be loaded up with not just the macOS installer but also an external recovery partition that may come in handy if your hard drive dies and you're away from an Internet connection. If you would like to create an install drive for a macOS version other than Catalina, just tweak the paths above to refer to Mojave or High Sierra instead.

Whichever method you use, you should be able to boot from your new USB drive either by changing the default Startup Disk in System Preferences or by holding down the Option key at boot and selecting the drive. Once booted, you'll be able to install or upgrade Catalina as you normally would. You can also use Safari, Disk Utility, or Time Machine from the recovery partition to restore backups or troubleshoot.

2019 is one of the great years for computer users and smartphones user. Because the world of technology is now in progress, as we know that in 2019 Apple Inc announced in world developers conference, macOS Catalina. Therefore, besides macOS Catalina announced iOS 13 with its significant new features. And with the announcing of macOS Catalina Microsoft also announced its new updates for the public, Windows 10 new features, with the same equality of macOS Catalina or macOS Mojave Dark Look and Light Look. And for Samsung smartphones, they announced the Android P version. However, we got the idea to install macOS Catalina 10.15 on VirtualBox and VMware. And here I will show you How to Create a macOS Catalina USB Drive installer. The way of creating a macOS Catalina USB installer is easy the same as macOS Mojave.

Create macOS Catalina USB Installer

However, the macOS Catalina version for the operating system is still not released for the public. But they can upgrade there macOS Mojave version directly through the internet into macOS Catalina 10.15. In July 2019 they will release the full version for Macintosh users. By the way, while installing any kind of operating system on a computer you need a Bootable USB Drive, and here I will show you the easiest way just follow the steps and read the article.

As you know there are different kinds of creating macOS Catalina 10.15 USB Drive. But one of the easiest ways to create Bootable USB using Terminal on macOS, whether you can use Disk Utility. I recommend you to choose Disk Utility because the procedure is a bit easy. And using Terminal is somehow complicated.

Create macOS Catalina USB Installer – System requirements of macOS Catalina 10.15

Before checking macOS Catalina on your system, there are some good points to know about your Mac computer version. However, macOS Catalina is heavy and for its installation, you need a nice computer, with high graphics, Processor, and RAM. Below I will declare some Mac computers that you can install macOS Catalina 10.15 on it.

• MacBook: 2015 or newer
• MacBook: Air, MacBook Pro 2012 or newer
• Mac Mini: Late 2012 or newer
• iMac: 2012 or newer
• iMac Pro: All models can support macOS Catalina 10.15
• Mac Pro: 2013 or newer

The great changes that come on macOS Catalina 10.15 Beta are:

• Catalyst
• Gatekeeper
• Voice Control
• Sidebar
• Changes in Application
• iTunes
• Find My Mac
• Reminders
• Removed Components

macOS Catalina creating USB Drive required files:

• At least 16 GB USB drive or more than 16 GB
• macOS Catalina 10.15 image file

By the way, if you don’t know the ways of installing macOS Catalina on VirtualBox and VMware Player. However, You can also check the below links and download macOS Catalina 10.15 Virtual machine images.

Download macOS Catalina 10.15 Beta 1

• Step #1. Enter to Apple Developer, and go ahead for download macOS Catalina or if you are not a member of Apple developer. Then go ahead and create an account to download macOS Catalina 10.15 Beta 1.
• Step #2. After signing in Apple Developer, go ahead and under featured click on download link.
• Step #3. After that, download is finished get start

In this case, you have gone through Apple Developer to download the latest update of macOS Catalina. Therefore, from Apple Developer you can use upgrading from macOS Mojave to macOS Catalina 10.15. Remember one thing upgrading can be risky for you so, I suggest to have a backup of your important files. However, in the next step you must have a clean installation of macOS Catalina on your computer. For that, you need a Bootable created USB. And insert the USB drive to your computer, then install macOS Catalina and enjoy using the new and fresh operating system.

How to create macOS Catalina USB Installer

• Step #1. Insert the USB drive to your computer.
• Step #2. I mentioned above also that the process of creating a macOS Catalina USB drive with Disk Utility is easy. Therefore, go to the search bar and type there “Disk Utility”. Erase USB drive with “Mac OS Extended (Journaled)” then complete the process of Disk Utility for macOS Catalina USB Drive.

Format the USB Drive

• After the USB Drive, formatted click Done

Create Macos Catalina Bootable Usb On Windows

Click Done

• Now navigate to search spotlight and type “Terminal” then hit enter.

Create Mac Os Catalina Bootable Usb Drive

• When the terminal opened copy the below command and paste into the terminal then press enter. The process of creating will take some minute, wait until it should complete 100%. When it completed close the terminal window.

Copy the command

Once the Bootable USB drive is created, open the clover configurator. With the clover configurator, you need to mount the EFI partition. When the clover configurator opened on the left-handed click on “Mount EFI”, then Mount the EFI on install macOS 10.15 Beta. Click on “Mount Partition” then type the password and click OK.

Mount Partition

Bottom Line

By the way, that’s all about How to create a macOS Catalina USB Installer. And the process of creating macOS Catalina Beta USB Installer is easy, and I also explained that step by step. Therefore, if you faced any kind of problem feel free and comment below. Give us feedback and subscribe to our Blog.