Can I boot and use Catalina version from an external disk after I upgrade my computer to Big Sur?
Is there any update in the version of the system parts with Big sur update?
Thanks
MacBook Pro 13″, macOS 10.15
Yes, you can boot in Catalina from an external disk after installing Big Sur.
Depending on your mac model, you may have to allow booting from an external drive in Startup Security - that is true not just for Catalina, and it applies to macs with T2 chip (which is most of the intel macs from last two or three years, I believe).
To change the settings in Startup Security, follow the instructions here:
https://support.apple.com/en-us/HT208198
Yes, you can boot in Catalina from an external disk after installing Big Sur.
Depending on your mac model, you may have to allow booting from an external drive in Startup Security - that is true not just for Catalina, and it applies to macs with T2 chip (which is most of the intel macs from last two or three years, I believe).
To change the settings in Startup Security, follow the instructions here:
https://support.apple.com/en-us/HT208198
Can I boot and use Catalina from external disk after I upgrade my computer to Big Sur?
