First of all, I would like to thank JFX, the developer of WinNTSetup, for developing this excellent software!
Of course, I have a doubt. I used WinNTSetup and used the MinWin function to release the ESD image. Of course, I also checked some optimizations before the release, such as "turn off OneDrive". But after entering the desktop, the original C disk becomes X disk, and this drive letter is really very strange. I didn't use VHD, I just used WinNTSetup in the WindowsPE environment and released the ESD image with the MinWin function, but I don't know why disk C became disk X. I still very much hope that JFX can fix this problem, which may benefit all WinNTSetup users.
In any case, thank you very much for JFX's great contribution to the Internet!