The VHD uses the child VHD to easily implement a second backup/restore. The principle is: for example, the initial creation of a VHD file ("Parent VHD"), the installation system, driver, and so on, in the same directory to create a "child VHD file", each read operation is in the "Parent VHD", and the write operation is in the child VHD. Here's how to do this:
1. Run "Vhd_onekey" (Download: Baidu network disk), click "Differential VHD/VHDX", set as follows--
(Be sure to note: "Parent VHD" and "Child VHD" must be in the same directory)
2. The above operation can be completed in an instant, the new "sub VHD" can be added to the Startup menu below. Add a Startup menu method see the previous article!
3. In accordance with the previous article and this article, a total of two startup menus were created: The parent VHD, the child VHD, used to go to the child VHD, and if you need to revert to the starting state, delete the "sub-VHD" file under WinPE and remove the corresponding boot menu (similar to the Add method).
Can be backup, restore at any time, convenient and quick, this method is called "difference", emphasis on understanding the principle, in order to save more time in use.