Oh, one more thing: > The entry should look like this: > > menuentry "Debian 7.0 wheezy installer, x86_64" { > linux /debian_iso/install.amd/vmlinuz priority=low vga=788 -- > initrd /debian_iso/install.amd/initrd.gz > } This will set the installer to "expert mode", leave out priority=low to avoid that.