I have previously 3 OS installed on my MBP 2010 13”, MacOS High Sierra, Windows 10 and Linux (Peppermint OS). So I decided to change my linux to ZorinOS and trying to flash it.
However, I think the installer overwrite the MacOS important boot folders/files. Now, every time I turn on the MacBook, it directs me to “GNU GRUB version 2.04”
I can see and try to type in this mode, but I have no idea of what to do with the BASH-like line editing.
I want to get back High Sierra MacOS x back please 😔
Thank you very much in advance for whoever willing to help