HP Laptop F3BU0MLC; W10pro; zorin 17 pro install only onto usb nvme 235GB

[Forpli]

I think this is the tutorial you mean

[How To] Convert Zorin Grub EFI to MBR and reverse

There may be instances where a user must change their Zorin OS install from EFI to MBR (legacy) or MBR to EFI. Often, this may be in order to ensure a consistent booting experience if more than one OS is installed. You want all installed OS's to preferably use the same Boot format. To convert from MBR to EFI (Replace sdX with your actual drive I.D. like sda or nvme0n1...): sudo grub-install --boot-directory=/boot --bootloader-id=ubuntu --target=x86_64-efi --efi-directory=/boot/efi /dev/sdX …