Hello. I know this is quite an old Post but it is quite close to my issue. I managed to deploy a dualbootloader (grub legacy) with a Ubuntu and a Windows 7 OS. Now i just wanna replace the Windows 7 with another Image but i wanna keep the existing Bootloader and all other OS in it. Is there a way to deploy a single OS into this bootloader or do i have to deploy the whole thing again (Grub+Ubuntu+ Windows 7)? Also is it possible to deploy an OS and then integrate it into the original FOG Bootmenu (Not just an iso i mean the native os)?