Yesterday I installed Kali linux in macbook air having macos (sierra).today I downloaded Catalina through appstore . It downloads Catalina file around 7gb and to install it reboots
MAGIC
While rebooting it enters into Linux grub option.
Then I tried to reboot again with option button
It show Macintosh disk and I clicked it.then
Normal sierra opened
What about Catalina os . I have files of Catalina
MacBook – Upgrading from sierra to catalina while maintaining dual boot with kali
catalinamacbook pro
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Best Answer
the mac reboots at the upgrade installation, some installation routines happens after this reboot. With re-booting into grub you canceled the installtion. Deacitvate grub to do a full installtion with maybe needed firmware upgrade...