I am attempting to install Funtoo Linux on a USB Thumb drive but during the boot, I'm greeted with a Kernel Panic. The thumb drive itself is not listed among the available devices which may hold file system with a bootable OS. This is although the running kernel has been selected from a menu provided by grub installed on the drive.
I have attempted to cover my bases in the kernel choosing as many USB options as seem sensible, please see the attached.
Please suggest how to proceed, thank you.