CreateLCOWBlankRWLayer uses an LCOW utility VM to create a blank VHDX and format it ext4.

CreateLCOWUVM creates an LCOW utility VM.

CreateTempDir creates a temporary directory.

CreateWCOWBlankRWLayer uses HCS to create a temp test directory containing a read-write layer containing a disk that can be used as a containers scratch space.

CreateWCOWUVM creates a WCOW utility VM.