Hi, so I've recently got a Macbook Pro 2014 15" that's supported by OCLP. But, when I installed Mac OS Sonoma on USB drive and plugged it into my computer and booted from and installed Sonoma. It booted up to my main SSD where my original Mac OS copy is on there and it had a startup error. It said something like go to apple.co.uk/startup or something. I reinstalled Mac OS Big Sur and had no problems ever since. Is there anything I should do to prevent this, or if possible could someone send me a link to a video tutorial since I might be doing something wrong.
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