fix for issue 2610

src/platform/installer/chromeos-install

Index: src/platform/installer/chromeos-install
diff --git a/src/platform/installer/chromeos-install b/src/platform/installer/chromeos-install
index f0ba5c8ac2bb83c2cb1d9daf8653f378e84b24a0..3ef48d71df477bc52241d2991222a6802b599382 100755
--- a/src/platform/installer/chromeos-install
+++ b/src/platform/installer/chromeos-install
@@ -24,6 +24,8 @@ DEFINE_boolean run_as_root ${FLAGS_FALSE} \
   "Allow root to run this script (Careful, it won't prompt for a password!)"
 DEFINE_boolean yes ${FLAGS_FALSE} \
   "Answer yes to everything"
+DEFINE_boolean recovery ${FLAGS_FALSE} \
+  "Install from a recovery image. Default: False"
 
 # Parse command line
 FLAGS "$@" || exit 1
@@ -208,6 +210,12 @@ ROOTFS_IMG=$(make_partition_dev ${SRC} 3)
 OEM_IMG=$(make_partition_dev ${SRC} 8)
 ESP_IMG=$(make_partition_dev ${SRC} 12)
 
+# For recovery image, copy from ROOT-B and KERN-B to destination
+if [ "$FLAGS_recovery" -eq "$FLAGS_TRUE" ]; then
+  KERNEL_IMG=$(make_partition_dev ${SRC} 4)
+  ROOTFS_IMG=$(make_partition_dev ${SRC} 5)
+fi
+
 if [ $(uname -m) = "armv7l" ]; then
   PMBRCODE=/dev/zero
 else