Hello MDLf ; I was trying to make multiboot USB drive with my sandisk (8 gb) the thing is when I load windows 7.iso with YUMI on my usb .. it turnes out to be OK but then as it allows multiboot , I also added a windows server 2008.iso with YUMI(with the windows 7/8 boot option) the windows 7 which I already had got overwriten !! Did I do something wrong ? now I can see 2 options when I boot from USB (1.windows 7 & 2.windowsserver2008) but both of them start windows server installation.!