How to Download macOS Mojave and Convert it into ISO Format

When this article is written, the new macOS Catalina 10.15.4 is available. And I am running macOS Catalina on my laptop. So basically, I cannot download macOS Mojave from my Catalina Hackintosh using AppStore. Well, I was planning to install macOS Mojave on my VMware on Windows PC. Fortunately, there is a way to download the macOS Mojave installation file and then convert it into an ISO file.

So this article will show you how to download a macOS Mojave installer and then convert it to ISO file. Follow these steps below:

Step 1. Download macOS Mojave Patcher

Basically, this patcher software will automate the macOS Mojave download process. Simply download the file below and run it on your Mac.

Step 2. Download macOS Mojave

Run the macOS Mojave Patcher you’ve just downloaded above.

Go to Tools and then click Download macOS Mojave button. Save the file to your download directory. Make sure you have the full size of the Install macOS file. It’s about 6 GB in size.

At this point, you have successfully downloaded the macOS Mojave installer. Now we are going to convert it into ISO format.

Step 3. Convert to ISO

There are several steps in this section. Most of them are done via Terminal. So let’s start.

Create a virtual disk for installation media (DMG)

hdiutil create -o /tmp/Mojave -size 8000m -layout SPUD -fs HFS+J

The command will create a disk image under /tmp folder called Mojave

Mount the disk image

hdiutil attach /tmp/Mojave.dmg -noverify -mountpoint /Volumes/install_build

Write the .app installer into the mount point

sudo /Users/dhani/Downloads/Install\ macOS\ --volume /Volumes/install_build

You will need to adjust the location of your .app file.

Unmount the Install macOS Mojave installer.

By default, after the above commands, macOS will automatically mount the macOS Mojave installer. We need to eject the Install macOS Mojave before proceeding to the next step. You can right-click on it (usually on your Desktop) and then click Eject “Install macOS Mojave”.

Convert DMG to ISO format

hdiutil convert /tmp/Mojave.dmg -format UDTO -o ~/Downloads/Mojave

The command will create Mojave.crd under your Download folder.

Change CDR to ISO

Finally, we only need to change the .cdr extension to .iso with this command

mv ~/Downloads/Mojave.cdr ~/Downloads/Mojave.iso

So now, you have successfully created Mojave.iso.

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