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Looking to create Mac OS Big Sur iso for vmware

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Hello. I am trying to make a Big sur iso following this guide:

But it seems like it is outdated and the BaseSystem.dmg is missing

The files I have downloaded are








Any workaround to this?



How to Create a MacOS Big Sur ISO File

We will be focusing on making an ISO file for macOS Big Sur, but you can use this same approach for making an ISO file of MacOS Catalina and macOS Mojave too.

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

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

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

hdiutil detach /Volumes/MacBigSur/

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


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

  1. Get the MacOS Installer application that you wish to use:
  2. The MacOS installer app should be in the /Applications folder and be labeled as “Install macOS Big Sur.app” or similar, keep it there and make note of the file name
  3. Next launch the Terminal application by hitting Command+Spacebar and typing “Terminal” and hitting the return key, or by launching it directly from the Utilities folder
  4. First, we must create a temporary disk image:
  5. Next, mount the disk image:
  6. Now we’ll use the createinstallmedia utility that is part of the MacOS Installer application to copy the installer files to the disk image you just created:
  7. Hit return and enter the admin password to authenticate, let this process complete as it makes the installer that will turn into the ISO. When finished, we then unmount the disk image volume:
  8. Next, we’ll convert the freshly created MacOS Installer disk image file to a CDR / ISO file that will appear on the desktop:
  9. Finally, we change the file extension from .cdr to .iso:

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