After updating to APFS on HS I received the following error when trying to use Bootcamp through Parallels 12 "Unable to connect to Hard Disk 0" (normal Bootcamp still works fine). I tired remaking the VM with no luck. After doing some digging in diskutil I discovered my Macintosh HD partition is now a "synthesized" partition with sub-partions (check the attached image). I can't recall my disk ever being like this 10.12 and below... but I also didn't try and memorize it. Seemed like an interesting find in itself. My guess is that Parallels isn't able to find disk0s4 because of this new system, but I'm guessing AND not sure if something else is at work. Figured it'd be best to throw this out and see if anybody has some thoughts. I've seen that Parallels is working for others, but I'm not sure if they're running the VM off of a file in macOS (as I suspect) or Bootcamp. Trying to get a sense of: 1) during the update to HS did my disk got updated oddly? Are others seeing this format? (run "sudo diskutil list" in terminal) 2) Is this something others have run into? 3) Is this something that just needs Parallels to address in an update? Appreciate the thoughts!