PB: I have KDE installed on MMC2, and it is also the boot SD card. Now I want to make another boot SD to install XFCE, would this mess up anything, in particular the swap.img and local.img on the MMC1? I understand that, in this case, I will have to change the MMC2 everything I want to switch between KDE with XFCE. And I am going to follow Ty (Aisu)'s instruction. Any do's and dont's? TIA, bun