However, please note that the target disk should have the same sector with the original disk. It is worth mentioning that this partition tool adopts sector-by-sector copying method, hence all sectors used or not will be cloned to guarantee that the target disk is exactly the same with the original disk after the operation. MiniTool Partition Wizard is a piece of professional disk partition manager that is able to clone hard drive within simple steps. By doing this, once the system gets messed up during the fixing process, you are able to revert everything to the previous state in just a few minutes. We recommend using MiniTool Partition Wizard Free to make a disk clone of the system drive. Warning: Before you start, make a backup of your computer in case that any unwanted error occurs.