macOS 10.13: Windows 10 installation with Boot Camp I tried to install Windows 10 via Boot Camp, but got stuck at the creating a new partition part. The error states:


  An error occurred while partitioning the disk. Please run disk utility
  to check and fix the error.


Here's what I did:


Run first aid on my internal drive
Decrypted the internal drive
Start in Cmd + S mode and run the /sbin/fsck -fy command
Reinstall Mac OS High Sierra


After all this, I still get the same partitioning error as before.

How can I install Windows 10 properly with Boot Camp?
This question is possibly related to 
  Disk Could Not Be Partitioned - First Aid not helping — I'm duplicating my
  answer here.


I had very similar problem. After contacting Apple Support and following their instructions, I've reinstalled macos (instructions here). This is not a wipeout reinstall, but do make a backup. 

After the reinstall partitioning worked like a charm. 

And so do Bootcamp installation.