--- grub-mkrescue.in?revision=1.5-orig	2008-01-24 01:01:13.000000000 +0100
+++ grub-mkrescue.in?revision=1.5	2008-01-24 01:08:35.000000000 +0100
@@ -46,6 +46,7 @@
   --pkglibdir=DIR         use images from directory DIR instead of ${pkglibdir}
   --grub-mkimage=FILE     use FILE as grub-mkimage
   --image-type=TYPE       select floppy or cdrom (default)
+  --image-size=1440       size of the image size (720, 1440 or 2880 KiB).
 
 grub-mkimage generates a bootable rescue image of the specified type.
 
@@ -54,6 +55,7 @@
 }
 
 image_type=cdrom
+image_size=1440
 input_dir=${pkglibdir}
 grub_mkimage=grub-mkimage
 
@@ -82,6 +84,14 @@
             echo "Unknown image type \`$image_type'" 1>&2
             exit 1 ;;
         esac ;;
+    --image-size=*)
+    	image_size=`echo "$option" | sed 's/--image-size=//'`
+        case "$image_size" in
+          720|1440|2880) ;;
+          *)
+            echo "Invalid image size \`$image_size'" 1>&2
+            exit 1 ;;
+        esac ;;
     -*)
 	echo "Unrecognized option \`$option'" 1>&2
 	usage
@@ -125,7 +135,7 @@
 core_img=`mktemp`
 ${grub_mkimage} -d ${input_dir}/ -m ${memdisk_img} -o ${core_img} memdisk cpio biosdisk ${modules}
 rm -f ${memdisk_img}
-cat ${input_dir}/boot.img ${core_img} /dev/zero | dd bs=1024 count=1440 > $floppy_image
+cat ${input_dir}/boot.img ${core_img} /dev/zero | dd bs=1024 count=${image_size} > $floppy_image
 rm -f ${core_img}
 
 if [ "x${image_type}" = "xfloppy" ] ; then