Not upset but I am touchy about gpt results. The ending wasn't the key part, the <cat> was the key part. I added img because that's the only image type I can think of that makes sense to write to sda in that way.
Why would anyone write an mp3 to a block device bit by bit
Of course. That's the right way to do it. I was pointing out that what was written isn't right in any situation and the smallest change to make it make sense would be adding <cat> in the middle
Turns out my answer was wrong too :D. Should have been <image.img cat >/dev/sda. Oh well
