I downloaded the iso and properly put it on my flashdrive. It will not boot from the drive, but reverts back to my main os, linux mint. I went and downloaded the mint iso and that boots from my flashdrive just fine, so I am assuming there is an issue with the pureos iso or that it is incomplete. I did try redownloading the pureos iso.
I did not know how to check it previously. Looked it up, and the SHA256SUM's do match. I tried using etcher to flash the file over to the usb, and I used whatever is native to mint. Like I said though, I did it for a linux mint iso and that one worked.