The Windows tool offers the choice of saving to a floppy or creating a disk image. Since I don't have a floppy drive, I saved the image & then burned it to CD.
The Diagnostic tool says that the drive must be before any other drive on which there is bootable stuff - which is the default C: and my CD drive is E:
Can anyone please tell me (in very easy terms!) how I change the setting to boot from E:
After I have done the diagnosis, is it a good idea to go back to the default boot sequence?