In our previous post, we shared an easy method to Create Bootable USB Installer for any macOS on Windows 10. We also shared a method on How to Create a Bootable Disk of MacOS X: 2 Easy Steps using a MAC system. Today, we will dive into a much deeper method on How To Create macOS Catalina Bootable USB on Windows!

1. How To Create Macos Catalina Bootable Usb Installer For Hackintosh
2. Create Macos Catalina Usb Installer Drive

Create macOS Catalina Bootable USB on Windows: Required Files

How to create a macOS Catalina installer. 1) Download the Install macOS Catalina application from the Mac App Store. If you want to download a Beta version instead, the process is slightly different: Paid developers can download the Beta Access Utility from the Apple Developer portal downloads section. Once installed on your computer, it will. Creating a bootable macOS Catalina USB install drive is an effective way to generate a clean installation of macOS on your Mac. This hands-on tutorial will work with both the macOS Catalina. Within the Applications folder, you will find the installer for macOS Catalina. It will have a name similar to “Install macOS Catalina Beta” or “Install macOS Catalina,” depending on whether you’re using the beta or the release version. Once you locate the installer, right-click on it and select Show Package Contents from the popup menu. How to create the macOS Catalina USB installer. Log on to the Mac computer and mount the USB device. Launch the Terminal and enter the command below to convert the USB device to installer media.

1. macOS Catalina DMG file for a clean installation. (Download links have been provided below)
2. A good internet connection to download the macOS Catalina DMG file. The file is around 8GBs, so you will need a good internet connection. Alternatively, you can use the Internet Download Manager tool that will help you enhance your downloading speed. I have provided the download links below.
3. A USB Drive (Pen-Drive or External Disk). Your USB device must be of sufficient memory for the installation.
4. TransMac tool from Acute Systems. This tool is a Windows application that may replicate and manage folders and files around Apple drives and apparatus, such as Mac-formatted hard drives, flash drives, and other memory devices, also, to open and burn disk images and .dmg along with .sparseimage documents.

How To Create macOS Catalina Bootable USB on Windows: Step by Step

This is a 4 step process, so please make sure you do not skip any part of it and eventually get frustrated with the failure. I have also shared a complete video tutorial on How To Create macOS Catalina Bootable USB on Windows: Step by Step, you can find the video at the end of this post.

Step 1: Download the required files to Create macOS Catalina Bootable USB on Windows

• TransMac tool from Acute Systems- This file is password protected and the password is www.techrechard.com. You can extract this file using WinRAR download free and support: WinRAR (win-rar.com).
• IDM 6.27 Build 2 Registered (32bit + 64bit Patch) [Techrechard.com] – This file is password protected and the password is www.techrechard.com. You can extract this file using WinRAR download free and support: WinRAR (win-rar.com).

How To Create Macos Catalina Bootable Usb Installer For Hackintosh

Step 2: Install TransMac Tool on your Windows 10

After downloading the TransMac tool from the above links, you can simply proceed with the installation. You will see the following contents:

After the files have downloaded, click SETUP.

And click, Next.

Accept the terms and conditions.

Choose the directory for installation.

Leave the default ticks and click Next.

And you see that within no time the setup is complete.

Step 3: Open TransMac Tool

Once the installation is over, the transmac tool will open itself. And you will see the following message.

Since we are running the trial version of TransMac, you need to wait for 7 seconds and it will open up automatically. After the 7 seconds are over, you can simply click, Run.

Now insert your pendrive, usb drive or any external disk.

And click Tools, followed by Refresh drive list.

Once you click refresh drive list, you will see your USD device attached.

Step 4: Complete the installation

Now, right click your USB and click Restore with Disk Image.

Now, you will be prompted an error that you need to run TransMac using administrator access. So you simply click YES.

Now, wait again for 7 seconds.

Now, right click on your USB device and click Restore from Disk Image again. You will be prompted with a warning and you can click Yes.

Now you select the Catalins DMG file and upload it.

Now click OK,

Now you will get your last warning that the USD device will be formatted. You can simply click YES.

The restoration process will begin and it will take around 20-30 minutes, depending upon your USD speed. For me, it took around 17 minutes.

Once complete, you will see.

Now the Restore process is complete, and you can use this USB as macOS Catalina Bootable USB. To check the contents of this USB, you will need a MAC system. If you do not have a spare MAC, no need to worry. I will show you the contents of this USB created.

NOTE: This USB will not work on Windows anymore. If you plug it again on your desktop, it will ask you to format the drive. So do not worry. The contents of this USB will be visible only on a MAC system.

As you can see the contents of the USB device. Now, you can use this as a macOS Catalina Bootable USB.

After this process is complete, you can use this USB to install macOS Catalina on your MAC system using the BIOS mode. You simply need to boot your MAC using this USB device at startup.

Here are some other posts that you might be interested in-

How to change the working of the function keys in Catalina?
How to Install macOS Catalina on VirtualBox on Windows: 8 Step Ultimate Guide
How to Install macOS Catalina on Unsupported Mac: 9 Easy Steps
How To Download Macos Catalina Vmware and Virtualbox Image – Latest Version
How To Download Macos 10.15 Catalina Iso + Dmg + Vmdk
How to Speed Up macOS Catalina? 7 Easy Methods

How To Create macOS Catalina Bootable USB on Windows: Conclusion

I hope you have enjoyed this article and have successfully created macOS Catalina Bootable USB on Windows. If you find any issues, you can leave your comments below. I have also created a complete video tutorial that you use and learn How To Create macOS Catalina Bootable USB on Windows below.

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.

Create Macos Catalina Usb Installer Drive

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.

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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.

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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.