Hi all,
I have formatted my Mac mini and reinstalled Big Sur. Then, I cloned it on my 500GB SSD drive in order to boot from there because it works faster with Xcode and Swift programming.
Unfortunately the booting process does not work.
I had dual boot with Catalina and it worked like a charm. Now, when I press the "Option" button during startup, nothing happens and it goes straight to Mac mini.
I used Carbon Copy Cloner.
Can anyone please give me a solution because I am stuck!
Thank you in advance,
Nikos
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