diff --git a/project-lakitu/chromeos-base/chromeos-init-systemd/chromeos-init-systemd-0.0.1-r27.ebuild b/project-lakitu/chromeos-base/chromeos-init-systemd/chromeos-init-systemd-0.0.1-r28.ebuild
similarity index 100%
rename from project-lakitu/chromeos-base/chromeos-init-systemd/chromeos-init-systemd-0.0.1-r27.ebuild
rename to project-lakitu/chromeos-base/chromeos-init-systemd/chromeos-init-systemd-0.0.1-r28.ebuild
diff --git a/project-lakitu/chromeos-base/chromeos-init-systemd/files/chromeos-mount-generator b/project-lakitu/chromeos-base/chromeos-init-systemd/files/chromeos-mount-generator
index 46f8176..64e7082 100755
--- a/project-lakitu/chromeos-base/chromeos-init-systemd/files/chromeos-mount-generator
+++ b/project-lakitu/chromeos-base/chromeos-init-systemd/files/chromeos-mount-generator
@@ -40,6 +40,14 @@
 #     /dev/disk/by-id/google-persistent-disk-0) will be formatted if need be and
 #     mounted at /var/log.
 #
+# cos.oem_dev=[path]
+#   This command line arguments indicates the block device that should be used
+#   for /usr/share/oem.
+#
+#  [path]:
+#    If empty, COS will use the default location as the 8th partition on the
+#    disk.
+#
 # When editing this file, keep in mind that we can't use heredocs here because
 # using heredocs creates a tempfile. A tmpfs isn't mounted at /tmp this early in
 # the boot process, causing /tmp to be read-only.
@@ -53,6 +61,7 @@
 STATEFUL_DEV=""
 MKFS_STATEFUL=""
 LOGS_DEV=""
+OEM_DEV=""
 
 # Parses arguments from the kernel command line and stores values in flag
 # variables.
@@ -72,6 +81,9 @@
       cos.logs_dev=*)
         LOGS_DEV="${arg#cos.logs_dev=}"
         ;;
+      cos.oem_dev=*)
+        OEM_DEV="${arg#cos.oem_dev=}"
+        ;;
       *)
         ;;
     esac
@@ -104,19 +116,22 @@
   local -r enable_dir="$4"
   local -r disk="$(basename ${dev})"
   local exec_opt="noexec"
-  # After sealing the OEM partition, it will be available through
-  # /dev/dm-[0-9]* instead of /dev/sda8
-  dev_holder_count=$(ls /sys/class/block/${disk}/holders | wc -l)
-  if [[ ${dev_holder_count} -gt 1 ]]; then
-    return
-  fi
+  if [[ -n "${OEM_DEV}" ]]; then
+    dev="${OEM_DEV}"
+  else
+    # After sealing the OEM partition, it will be available through
+    # /dev/dm-[0-9]* instead of /dev/sda8
+    dev_holder_count=$(ls /sys/class/block/${disk}/holders | wc -l)
+    if [[ ${dev_holder_count} -gt 1 ]]; then
+      return
+    fi
 
-  local dev_holder="$(basename /sys/class/block/${disk}/holders/*)"
-  if [[ ${dev_holder} != "*" ]]; then
-    dev="/dev/${dev_holder}"
-    exec_opt="exec"
+    local dev_holder="$(basename /sys/class/block/${disk}/holders/*)"
+    if [[ ${dev_holder} != "*" ]]; then
+      dev="/dev/${dev_holder}"
+      exec_opt="exec"
+    fi
   fi
-
   echo "
 [Unit]
 Before=local-fs.target