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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.
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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
