This will allow you to boot from the USB drive and access the Hiren's BootCD tools.

He reached into his desk drawer, past the tangled USB cables and half-empty thermal paste tubes. His fingers found a scratched, silver disc labeled in fading marker: Hiren’s BootCD 13.1. It was an artifact from 2011, a digital Swiss Army knife from a time when software felt more like magic and less like a subscription.

UNetbootin also works, but Rufus is more reliable for older ISO hybrids.