Fix grub install condition.

diff --git a/create-image b/create-image
index b6fc7f6..04fe0ee 100755 (executable)
--- a/create-image
+++ b/create-image
@@ -144,7 +144,7 @@ class ImageCreator
           end
 
           puts "Update grub..."
           end
 
           puts "Update grub..."

-          unless File.exists? "#{dir}/boot/grub/grub.cfg"
+          unless File.exists? "#{dir}/usr/sbin/grub-mkconfig"

             system("chroot", dir, "apt-get", "-qy", "update") or raise "Failed to install grub-pc"
             system({'DEBIAN_FRONTEND' => 'noninteractive'}, "chroot", dir, "apt-get", "-y", "install", "grub-pc")
           end
             system("chroot", dir, "apt-get", "-qy", "update") or raise "Failed to install grub-pc"
             system({'DEBIAN_FRONTEND' => 'noninteractive'}, "chroot", dir, "apt-get", "-y", "install", "grub-pc")
           end