Zorin OS EFI/GRUB broken – BIOS sees the disk but can’t boot

Installing Zorin OS
1

My Zorin installation won’t boot.
The BIOS detects the internal drive, but the EFI/GRUB partition is messed up, so Boot Priority options disappeared and the system won’t load.

Zorin Live boots fine from USB/DVD, and Super Grub2 Disk can see vmlinuz, initrd, and the Zorin partitions.

Looks like a pure bootloader issue.

What’s the recommended way to rebuild the EFI partition and reinstall GRUB from a Zorin live session? Thanks

2

You can try to launch "boot repair" in a Zorin live session (boot from the Zorin USB stick and choose "Try Zorin").
Enter "boot repair" in the search field of the Zorin start menu (Zorin button in the panel).

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