About Windows8.1 installing Windows 10 preview from a VHD point of attention

Some time ago, Windows10 preview version came out, I believe many people want to try this system. A new system for installing Windows on a VHD is a good choice. Below, talk about the place to pay attention to. ( the content below is only suitable for efi+gpt+windows8.1 environments )

Tools:
1: Create a VHD file directly on system Disk Management and attach the VHD, an empty virtual disk appears.
2:gimagex 2.0.17, install the image in the Install.wim extracted to the VHD mounted virtual magnetic the disk.
3: Bootice, which modifies the BCD and adds a WINDOWS10 boot entry.

Note the point:
1:VHD file name try not to have spaces (you can also try the next VHDX, because the VHD changes the size of the trouble point, while the VHDX dynamically expands when you create the VHDX when you find particularly fast, and the VHD file is created slower).
The boot file in 2:BCD is best written in Winload.efi.
3: Do not need to replace the bootmgr file under windows8.1 with Windows10 bootmgr file, because the measurement is not required. (If you want to replace it, you don't have permission to start, you have to change the file's user and then assign write permissions to the user).

About Windows8.1 installing Windows 10 preview from a VHD point of attention