Cannot boot off USB after installing an OS

[Ray_Kiddy]

I saw the same and posted. Why would re-burning the media do this? Very bothersome…

Repair of Ubuntu (was: difficulties with install disk)

When I first installed Ubuntu 20.04.3 on my laptop, I had burned an ISO onto a thumb drive. This was my install media. It is a USB-A stick. I have a (6") USB-A → USB-C cable and it worked, but it took repeated tries to get the system to boot into disk-select mode. In the past, I had to re-install something. This was the not-working-with-wifi-pnm thing. I could not get the disk to mount. I had to re-burn the image onto the thumb drive, try a bunch more times. I am not sure if it was the newly-bu…