VDisk legacy boot fail with vhd but success with vdi

[nguyen ha thai trong]

OK, Maybe it not comfortable with my motherboard (Biostar Hi-Fi H87S3+).
But it really works with VDI (Fixed Size) in legacy model.
I tried install Mint 20.2 with VHD(Fixed Size) twice, all boot failed in legacy model.

Did you follow the instructions in the link below?
https://www.ventoy.net/en/plugin_vtoyboot.html