vssadmin
For working with shadow copies!
List all shadow copy storage associations
vssadmin list shadowstorage
List shadow copies
vssadmin list shadows
Create a shadow copy
vssadmin create shadow /for=C:
Copy data out of a shadow copy
copy \\?GLOBALROOT\Device\HarddiskVolumeShadowCopy1\somefolder\file c:\temp\file\
warning
How do you do this in PowerShell? With Robocopy or what? I can't make it work!!!!1111!!!!1!