I've been trying to install ubuntu from my usb flash drive but it keeps giving me the same "unknown keyword" error. I've already tried to change the names in xlinux.cfg and the others, but what comed up was that when I removed the flash drive from my PC it was getting corrupted (I noticed from the wrong content from isolinux.cfg and missing files).
Since I presume it's my flash drive's fault, I've thought if there's no way to install ubuntu in my HDD from inside the windows 10 running on my desktop.
EDIT: I don't think I let clear that I am trying to install ubuntu on my second computer, whose HDD are clean. My main computer, which I was referring to, has only windows 10.