diff -Nru grub-installer-1.27ubuntu8/debian/changelog grub-installer-1.27ubuntu8.1/debian/changelog
--- grub-installer-1.27ubuntu8/debian/changelog	2008-05-02 11:52:56.000000000 -0500
+++ grub-installer-1.27ubuntu8.1/debian/changelog	2008-11-04 14:28:48.000000000 -0600
@@ -1,3 +1,11 @@
+grub-installer (1.27ubuntu8.1) hardy-proposed; urgency=low
+
+  * Backport fixes for booting degraded software RAID (LP: #290885).
+  * grub-installer: determine if installing to a /dev/md RAID device, and
+    iteratively write grub to each disk in the array.
+
+ -- Dustin Kirkland <kirkland@ubuntu.com>  Tue, 04 Nov 2008 14:28:31 -0600
+
 grub-installer (1.27ubuntu8) hardy-proposed; urgency=low
 
   * Let grub automatically detect the boot device when using Wubi
diff -Nru grub-installer-1.27ubuntu8/grub-installer grub-installer-1.27ubuntu8.1/grub-installer
--- grub-installer-1.27ubuntu8/grub-installer	2008-05-02 11:44:23.000000000 -0500
+++ grub-installer-1.27ubuntu8.1/grub-installer	2008-11-04 11:55:18.000000000 -0600
@@ -310,6 +310,7 @@
 # Identify partition table of the disk containing our boot partition
 bootfslabel=$(partmap $disc_offered || echo unknown)
 
+found=0
 # Check if the boot file system is on Serial ATA RAID
 frdev=""
 if type dmraid >/dev/null 2>&1; then
@@ -318,10 +319,26 @@
 			frdev=/dev/mapper/$frdisk
 			frbootpart=${disc_offered#$frdev}
 			frgrubroot=$(($frbootpart - 1))
+			frtype=sataraid
+			found=1
 			break
 		fi
 	done
 fi
+# Check if the boot file system is on an mdadm device
+if [ "$found" = "0" ] && type mdadm >/dev/null 2>&1; then
+	frdisk_list=
+	for frdisk in $(mdadm --detail "$bootfs_nodevfs" 2>/dev/null | \
+			grep " active sync " 2>/dev/null | \
+			sed "s/^.* active sync\s*//" 2>/dev/null \
+	); do
+		# Build a list of devices in the mirror
+		frdisk_list="$frdisk_list $frdisk"
+		frdev=
+		frtype="mdadm"
+		found=1
+	done
+fi
 
 info "Identified partition label for $bootfs: $bootfslabel"
 
@@ -582,6 +599,19 @@
 
 mkdir -p $ROOT/boot/grub
 
+write_grub() {
+	info "Installing GRUB to $frdev; grub root is $disc_offered"
+	# TODO: Check for errors during this process!
+	TERM=linux $chroot $ROOT \
+        grub --device-map=/dev/null >/var/log/grub-${frtype}.log 2>&1 </dev/null <<EOF
+device (hd0,$frgrubroot) $disc_offered
+device (hd0) $frdev
+root (hd0,$frgrubroot)
+setup (hd0)
+quit
+EOF
+}
+
 if [ -z "$frdisk" ]; then
 
 	# Install grub on each space separated disk in the list
@@ -645,18 +675,20 @@
 		error "Grub stage files not available"
 		exit 1
 	fi
-	mkdir -p /target/boot/grub
+	mkdir -p $ROOT/boot/grub
 	cp $ROOT/usr/lib/grub/$stagedir/* $ROOT/boot/grub
 
-	# TODO: Check for errors during this process!
-	TERM=linux $chroot $ROOT \
-        grub --device-map=/dev/null >/var/log/grub-dmraid.log 2>&1 </dev/null <<EOF
-device (hd0,$frgrubroot) $disc_offered
-device (hd0) $frdev
-root (hd0,$frgrubroot)
-setup (hd0)
-quit
-EOF
+	if [ "$frtype" = "mdadm" ]; then
+		for frdisk in $frdisk_list; do
+			frdev=$(echo "$frdisk" | sed "s/[0-9]\+$//")
+			disc_offered=$frdev
+			frbootpart=${frdisk#$frdev}
+			frgrubroot=$(($frbootpart-1))
+			write_grub
+		done
+	else
+		write_grub
+	fi
 
 fi