Installing Mint 20.2 from a USB stick on a clean iMac with 512 GB SSD seemed to go wonderfully and very rapidly. It booted to the USB, and installing Mint was rapid and apparently successful - right up to the end, when it stopped with:
- "Unable to install GRUB in /dev/sda
Executing 'grub-install /dev/sda' failed'
This is a fatal error.
I have since tried everything suggested (on the Telegram channel) but no luck.
Is it something to do with the iMac bios (of it has one) or a known issue? Can I manually install GRUB?
Regards
Martin