Acronis True Image Server User’s Guide
Restoring a disk (partition) from an image
Select partition type
If you need only the data, you don't have to create another primary partition. In
this case, you can restore the partition as logical to access the data only.
But if you are to restore a system partition, you should select the Primary type for
it. Finally, if you want to load operating system from it, select Active as well.
Selecting Active for a partition without an installed operating system might prevent your PC
from booting.
Selecting a file system
Though this is required rather seldom, you can change partition file system during
its restoration.