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Hey, Does anybody know how to go from Big Sur to some old operating system like Mojave, Sierra etc.
Because when I tried to open the "Mojave Installer" It said that that operating system is too old or something. Then Catalina. It also said it was too old. I dunno what to do about that.
This is the text that appears :
This copy of the “Install macOS”
application is too old to be opened on this version of
macOS.
One can Not install an Older version of macOS ( Sierra, Mojave, Catalina ) on top of the Newest version of macOS Big Sur. The only way to achieve this is to Erase the existing version of macOS and install the older version.
Is this a Brand New computer with the new Apple Silicon M1 chip or Intel ? If Apple Silicon M1 - it came with Big Sur and there is no other macOS the can be installed on it.
Notation: One must determine the Age of the machine >> About this Mac << from Desktop Icon. Then an only then can we determine just how far back the machine can go versus macOS.
One can Not install an Older version of macOS ( Sierra, Mojave, Catalina ) on top of the Newest version of macOS Big Sur. The only way to achieve this is to Erase the existing version of macOS and install the older version.
Is this a Brand New computer with the new Apple Silicon M1 chip or Intel ? If Apple Silicon M1 - it came with Big Sur and there is no other macOS the can be installed on it.
Notation: One must determine the Age of the machine >> About this Mac << from Desktop Icon. Then an only then can we determine just how far back the machine can go versus macOS.
Welcome and Thank you too!
Do come back to these Forums if / when additional questions my arise. There are many Contributors who are willing to assist.
Big Sur to Older OS
