Yes, I can well recommend this procedure:
a) Get on your Mac host to here:
Installing Windows 10 using the media creation tool ...
b) select the right windows version (for me "Windows 10" 64 Bit) and download the ISO
c) mount the ISO using the Mac finder tools
d) execute from your Win 8/8.1 explorer the Setup.exe obtained in step c)
e) patiently wait for the progress, without getting lured into any interaction, with one exception: somewhen after a Parallels roboot it tells "Parallels Tools 100% installed", and you can/should safely press "Reboot".
After three quarters of an hour the installation was finished. But my PM was swollen from 14 GB to 21 GB. I used the Windows Utility for "removing unneeded data" (or so, I know it only in German), including the function "remove unnecessary system data" (or so), but this found only 30 MB to set free. But when I scrolled down the items found, I stumbled upon "previous Windows installation" with a whopping 15 GB. After checking this item and executing "Ok", disk space was freed, but going to the Parallels menu Actions/Configuration revealed only 5 GB space possible to free. After I executed that, my PM was back again at 14 GB.
So after about an hour everything was fine again.
Click to expand...