We can’t find a USB flash drive
The funny part of any hardware error is when you see its right there, and the computer says it’s not there. The same happens here, so let’s look at the possible solutions. 1] Check if USB is accessible on the computer The first thing to check if you can access the USB drive from the computer. Open the File Explorer, and see if the USB drive is listed. 2] Try a different USB drive If it works, and the problem remains the same, try a different USB drive with even more significant storage space. Makes sure to check its working on a different computer. 3] USB 3.0 port or USB 2.0 port issues While USB 3.0 ports are compatible with USB 2.0 ports, it doesn’t write off the fact that it can be a problem. It is best to use a compatible drive. 4] Bad sectors on the USB drive Before creating the bootable USB drive, the installer formats it. It is usually the quick format which doesn’t check for any error. I would suggest to deep format the drive, which will also check for bad sectors. 5] USB flash drive set as the primary drive Rare, but if for some reason USB flash drive is set as the primary drive, it will not show up in the list. It is also possible that the USB drive has a primary disk into it. So here is how to undo it. We will use the DISKPART tool here. One of these solutions will make sure the USB drive appears in the list. Let us know how it worked for you.