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!
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 Three: Create macOS Catalina Bootable USB Installer in Windows on Terminal. The USB installer has now been formated, it’s time to create and copy the installer with a command on Terminal. For this purpose, open Spotlight and type Terminal. The Mac is running OS X v10.6.8 or later (which includes any version of macOS). Below are the steps needed to create an USB flash drive El Capitan bootable installer. Download the InstallMacOSX.dmg file by clicking on the OS X El Capitan 10.11 link in the Apple document 'How to get old versions of macOS'.
To make a bootable copy of Catalina on a USB drive, make sure it has at least 12 GB of free memory. Since your USB drive will be formatted in the process, it’s also important to back up the data you store on it. If your USB drive is ready, follow these steps to create a bootable copy of Catalina: Download the Catalina installer. Some Mac users may wish to create a bootable MacOS Catalina installer drive, typically using a USB flash drive or with another similar small boot disk. Bootable USB installers offer an easy way to upgrade multiple Macs to macOS Catalina, to perform clean installs of MacOS Catalina, to perform maintenance from a boot disk like formatting disks.
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.
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.
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
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.