Opencore Catalina just started upgrading my computer unexpectedly and I can't cancel it.

I just restarted my computer and on shutdown it said something about "Taking a minute.." like it was installing something.

On reboot, it seemed to take quite a while on black screen before it suddenly entered what looked like an OS upgrade screen but the language was in spanish.

I rebooted and noticed there was a Install Disk icon and the regular one but I couldn't choose the regular harddisk one. It was forcing me to the installation one.

Any idea what's happened or what's going on. It's...

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