I used the flash drive above, having read in the sticky thread that somebody had found that it worked fine (since TravelDrives aren’t that easy to come by in the UK, with the exception of Amazon).
Having tried it, it didn’t work. I have followed all the steps very carefully. I just get the Apple logo and normal startup process with no sign that it is even noticing the patchstick.
Since another user has successfully managed to get up and running with the same flash drive, I don’t believe that compatability is the issue. Can you please provide me with some guidance on what to do next?