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azrael2001ca

macrumors newbie
Original poster
Oct 27, 2019
13
1
Hi All.

I have a 2014 iMac running Catalina fully updated.

When Big Sur came out I figured I would try and install it on an external drive just to see what it is like before making a leap.

I've downloaded from System Update, and go to install on my Catalina backup. It does its black magic and then says it has to reboot. Ok. So I restarted, and when it booted up it came back to my main internal drive. I checked to make sure that my boot disk was my Catalina backup in System Preferences -> Startup Disk.

Restarted.

Came back to my internal drive. Ran the installer again, and when it restarted, I held down the option key to give me the ability to choose the drive. Never got the screen showing which drive I wanted and it booted into the internal Catalina drive.

I am frustrated and stumped.

Any ideas?

Regards
 
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