I'm sorry if I'm posting this in the wrong place or if I have just lost my mind, but I'll continue.
Earlier today I was installing Arch on my USB according to the official Samsung Series 3 install guide. Somewhere along the line, my computer rebooted for some reason and I had trouble continuing the installation after that point, so I decided just to start completely over again just in case I had done something wrong. Somewhere in all of the reboots involved in getting into developer mode, I'm pretty sure there was a chromebook update. I started the install again, and this time it's telling me the "parted" command is unknown. I'm in root mode in crosh and can't think of anything else I've done wrong. Did ChromeOS decide to stop recognizing parted in the last couple hours?
Edit: I erased and reformatted my USB before I tried the install again, so it shouldn't have anything to do with partitions.