How to Create a macOS Big Sur ISO File Using Terminal

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How to Create a macOS Big Sur ISO File Using Terminal
There is multiple cause why chances are you’ll need to create a macOS Big Sur ISO file. Maybe you want to set up macOS into digital machines comparable to VMWare and Parallels Desktop for intensive testing. Maybe you might be keen to make an alternate installer media on an exterior onerous drive. Whatever may very well be your cause for making a macOS Big Sur ISO file, you’d be glad to realize it’s doable to fine-tune a totally useful ISO file with out having to make use of any third-party device. If you might be all set, let me information you thru!

Make a macOS Big Sur ISO File Using Terminal App

So, how do you get an ISO file on Mac? Thanks to the built-in app referred to as Terminal, you can also make a workable ISO file via the command line. For the parents who’re questioning as to why the complete course of requires the necessity of Terminal or a third-party app, it’s as a result of the macOS installer utility is definitely an .app file (and never a disk picture).

It’s price declaring that you need to use the identical course of to create ISO file for the earlier generations of macOS like macOS Catalina and Mojave as properly. So, even if you need the file for the older generations of macOS, the next steps can take you thru. With that mentioned, let’s get going!

  1. To get began, head over to Mac App Store and obtain the installer app for macOS Big Sur. Once the macOS installer app (named as macOS Big Sur.app) is downloaded, you will discover it contained in the Applications folder.

macOS Big Sur

2. Now, open the Terminal app. You can launch it from the Applications > Utilities folder. Alternately, you may press Command+Space and seek for the Terminal app to rapidly discover it.

Launch Terminal app on Mac

3. Next, it’s time to create a brief disk picture. Launch terminal and run the next command.

hdiutil create -o /tmp/MacBigSur -size 12500m -volname MacBigSur -layout SPUD -fs HFS+J

Create a temporary disk image

4. Next up, you want to mount the disk picture:

hdiutil connect /tmp/MacBigSur.dmg -noverify -mountpoint /Volumes/MacBigSur

Now mount the disk image

5. Up subsequent, copy the installer recordsdata to the disk picture we have now simply created utilizing the createinstallmedia utility which is a part of the macOS Installer utility.

sudo /Applications/Install macOS Big Sur/Contents/Resources/createinstallmedia --volume /Volumes/MacBigSur --nointeraction

Now copy the installer file

6. Now, press return after which sort the admin password to authenticate. Now, you want to anticipate a while till the installer is created.  Once the method is accomplished, you’ll need to unmount the disk picture quantity.

hdiutil detach /Volumes/MacBigSur/

Time to unmount the disk image

7. Next, convert the newly created macOS Insaller disk picture file to an ISO/CDR file. Now, it would present up on the desktop.

hdiutil convert /tmp/MacBigSur.dmg -format UDTO -o ~/Desktop/MacBigSur.cdr

Make sure to convert the newly created macOS Insaller disk image file to an ISO:CDR file

8. Next up, change the file extension from .cdr to .iso.

mv ~/Desktop/MacBigSur.cdr ~/Desktop/BigSur.iso

Next up, change the file extension from .cdr to .iso.

That’s all there may be to it! You have efficiently made a macOS Big Sur ISO file (named as BigSur.iso) in your Mac.

How to Create a macOS Big Sur ISO File

Create a macOS Big Sur ISO File with Terminal

So, that’s how one can create a useful ISO file utilizing the Terminal app in your Mac. It’s good that the primary get together app works reliably in making an ISO file as you don’t should search for third-party software program and even dole out some bucks. As somebody who closely depends on Terminal for getting it executed, I have to say which you could depend on the app to reside as much as the duty as a rule.

Though it’s additionally doable to transform dmg and CDR recordsdata to ISO with the assistance of Disk Utility, the entire course of doesn’t really feel simple. Therefore, I don’t suggest it. By the way in which, have any questions or suggestions? Be certain to place your ideas throughout associated to this matter. Also, don’t overlook to learn our protection of different articles on macOS Big Sur, together with our assortment of greatest Big Sur widgets, fixing battery drain points on Big Sur, and extra.

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