diff --git a/boot_control_chromeos.cc b/boot_control_chromeos.cc
index b390f61..3f1eac4 100644
--- a/boot_control_chromeos.cc
+++ b/boot_control_chromeos.cc
@@ -19,10 +19,12 @@
 #include <memory>
 #include <string>
 #include <utility>
+#include <vector>
 
 #include <base/bind.h>
 #include <base/files/file_path.h>
 #include <base/files/file_util.h>
+#include <base/strings/string_split.h>
 #include <base/strings/string_util.h>
 #include <chromeos/constants/imageloader.h>
 #include <rootdev/rootdev.h>
@@ -36,6 +38,7 @@
 #include "update_engine/common/utils.h"
 
 using std::string;
+using std::vector;
 
 namespace {
 
@@ -44,7 +47,7 @@
 const char* kAndroidPartitionNameKernel = "boot";
 const char* kAndroidPartitionNameRoot = "system";
 
-const char kPartitionNamePrefixDlc[] = "dlc_";
+const char kPartitionNamePrefixDlc[] = "dlc";
 const char kPartitionNameDlcA[] = "dlc_a";
 const char kPartitionNameDlcB[] = "dlc_b";
 const char kPartitionNameDlcImage[] = "dlc.img";
@@ -145,6 +148,31 @@
   return current_slot_;
 }
 
+bool BootControlChromeOS::ParseDlcPartitionName(
+    const std::string partition_name,
+    std::string* dlc_id,
+    std::string* dlc_package) const {
+  CHECK_NE(dlc_id, nullptr);
+  CHECK_NE(dlc_package, nullptr);
+
+  vector<string> tokens = base::SplitString(
+      partition_name, "/", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
+  if (tokens.size() != 3 || tokens[0] != kPartitionNamePrefixDlc) {
+    LOG(ERROR) << "DLC partition name (" << partition_name
+               << ") is not well formatted.";
+    return false;
+  }
+  if (tokens[1].empty() || tokens[2].empty()) {
+    LOG(ERROR) << " partition name does not contain valid DLC ID (" << tokens[1]
+               << ") or package (" << tokens[2] << ")";
+    return false;
+  }
+
+  *dlc_id = tokens[1];
+  *dlc_package = tokens[2];
+  return true;
+}
+
 bool BootControlChromeOS::GetPartitionDevice(const string& partition_name,
                                              unsigned int slot,
                                              string* device) const {
@@ -152,17 +180,13 @@
   if (base::StartsWith(partition_name,
                        kPartitionNamePrefixDlc,
                        base::CompareCase::SENSITIVE)) {
-    // Extract DLC module ID from partition_name (DLC module ID is the string
-    // after |kPartitionNamePrefixDlc| in partition_name).
-    const auto dlc_module_id =
-        partition_name.substr(strlen(kPartitionNamePrefixDlc));
-    if (dlc_module_id.empty()) {
-      LOG(ERROR) << " partition name does not contain DLC module ID:"
-                 << partition_name;
+    string dlc_id, dlc_package;
+    if (!ParseDlcPartitionName(partition_name, &dlc_id, &dlc_package))
       return false;
-    }
+
     *device = base::FilePath(imageloader::kDlcImageRootpath)
-                  .Append(dlc_module_id)
+                  .Append(dlc_id)
+                  .Append(dlc_package)
                   .Append(slot == 0 ? kPartitionNameDlcA : kPartitionNameDlcB)
                   .Append(kPartitionNameDlcImage)
                   .value();
diff --git a/boot_control_chromeos.h b/boot_control_chromeos.h
index f3682e9..109197f 100644
--- a/boot_control_chromeos.h
+++ b/boot_control_chromeos.h
@@ -59,6 +59,7 @@
   friend class BootControlChromeOSTest;
   FRIEND_TEST(BootControlChromeOSTest, SysfsBlockDeviceTest);
   FRIEND_TEST(BootControlChromeOSTest, GetPartitionNumberTest);
+  FRIEND_TEST(BootControlChromeOSTest, ParseDlcPartitionNameTest);
 
   // Returns the sysfs block device for a root block device. For example,
   // SysfsBlockDevice("/dev/sda") returns "/sys/block/sda". Returns an empty
@@ -74,6 +75,13 @@
   int GetPartitionNumber(const std::string partition_name,
                          BootControlInterface::Slot slot) const;
 
+  // Extracts DLC module ID and package ID from partition name. The structure of
+  // the partition name is dlc/<dlc-id>/<dlc-package>. For example:
+  // dlc/dummy-dlc/dummy-package
+  bool ParseDlcPartitionName(const std::string partition_name,
+                             std::string* dlc_id,
+                             std::string* dlc_package) const;
+
   // Cached values for GetNumSlots() and GetCurrentSlot().
   BootControlInterface::Slot num_slots_{1};
   BootControlInterface::Slot current_slot_{BootControlInterface::kInvalidSlot};
diff --git a/boot_control_chromeos_unittest.cc b/boot_control_chromeos_unittest.cc
index 6a60009..1c40dce 100644
--- a/boot_control_chromeos_unittest.cc
+++ b/boot_control_chromeos_unittest.cc
@@ -18,6 +18,8 @@
 
 #include <gtest/gtest.h>
 
+using std::string;
+
 namespace chromeos_update_engine {
 
 class BootControlChromeOSTest : public ::testing::Test {
@@ -67,4 +69,22 @@
   EXPECT_EQ(-1, bootctl_.GetPartitionNumber("A little panda", 0));
 }
 
+TEST_F(BootControlChromeOSTest, ParseDlcPartitionNameTest) {
+  string id, package;
+
+  EXPECT_TRUE(bootctl_.ParseDlcPartitionName("dlc/id/package", &id, &package));
+  EXPECT_EQ(id, "id");
+  EXPECT_EQ(package, "package");
+
+  EXPECT_FALSE(
+      bootctl_.ParseDlcPartitionName("dlc-foo/id/package", &id, &package));
+  EXPECT_FALSE(
+      bootctl_.ParseDlcPartitionName("dlc-foo/id/package/", &id, &package));
+  EXPECT_FALSE(bootctl_.ParseDlcPartitionName("dlc/id", &id, &package));
+  EXPECT_FALSE(bootctl_.ParseDlcPartitionName("dlc/id/", &id, &package));
+  EXPECT_FALSE(bootctl_.ParseDlcPartitionName("dlc//package", &id, &package));
+  EXPECT_FALSE(bootctl_.ParseDlcPartitionName("dlc", &id, &package));
+  EXPECT_FALSE(bootctl_.ParseDlcPartitionName("foo", &id, &package));
+}
+
 }  // namespace chromeos_update_engine