When you created the ZorinOS USB with Rufus, did you choose partition scheme as GPT for UEFI (or MBR for legacy BIOS), whichever is correct for your system?
Also. Have you looked at this: Before you install
When you created the ZorinOS USB with Rufus, did you choose partition scheme as GPT for UEFI (or MBR for legacy BIOS), whichever is correct for your system?
Also. Have you looked at this: Before you install