Set up macOS on a 2009 iMac using a bootable USB drive.
Set up macOS on a 2009 iMac using a bootable USB drive.
It's unclear if Macs supported installing the OS from USB back then. It seems a DVD might have been the only option.
You can start Macs using devices as old as the early G4s via USB. Any Intel iMac should work fine. Do you know anyone who might lend one?