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myspaghetti / macos-virtualbox

Push-button installer of macOS Catalina, Mojave, and High Sierra guests in Virtualbox on x86 CPUs for Windows, Linux, and macOS
GNU General Public License v2.0
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Create macOS Big Sur installer in macOS RECOVERY ( without Full macOS or VM ) #543

Closed heinthanth closed 2 years ago

heinthanth commented 2 years ago

I've read the scripts and able to create macOS installer USB using asr, diskutils in recovery shell ( like the script use ).

But with macOS big sur, I only get InstallAssistant.pkg. How can I use it to create bootable USB installer in recovery shell.

( In real mac, we can just install the pkg and /Applications/Install*.app/Contents/Resouces/createinstallationmedia. But dunno how in recovery shell. )

Not an issue with the script. Just want to figure out and contribute.

myspaghetti commented 2 years ago

The recovery environment is not able to execute every executable that runs on macOS. From my limited experience, createinstallationmedia does not work on the recovery shell, but I haven't tried it with Big Sur. I'll give it a go as a possible shortcut for installing Big Sur and Monterey.

myspaghetti commented 2 years ago

I tried extracting InstallAssistant.pkg in the recovery environment but it didn't extract SharedSupport.dmg so obviously the installer wouldn't run, and I have a feeling that even if it did extract successfully it would have failed like previous versions. Still, I'm open to this method if it ever actually works.