I recently purchased a Thinkpad Carbon X1 computer that does not have a CD drive. I tried to install Ubuntu, using Unetbootin; when I booted Unetbootin, it appeared to be installing Ubuntu 20.04 -- but the process went on for over a day, stuck at one point. Instead of terminating the attempted installation, I foolishly rebooted.
The result is, that the solid state storage was thoroughly corrupted.
Tomorrow, I'll purchase a USB flash drive, and turn it into an Ubuntu 20.04 installation device. (I have a Dell Latitude computer that runs Ubuntu 20.04 perfectly; I've downloaded the .iso file to be burned into a new Flash drive, and the necessary burner software.)
I plan to place the thus created Ubuntu flash drive into the Thinkpad and boot the Thnkpad.
I'm hoping that Ubuntu 20.04 will pop up, and that I'll be able to install Ubuntu 20.04 on the solid state storage device, turning the Thinkpad into a usable Ubuntu computer, from which I can remove the USB device.
Am I missing a few things?