diff --git a/cmake/gauze_run_start_script.cmake b/cmake/gauze_run_start_script.cmake
index b858895..02ea387 100644
--- a/cmake/gauze_run_start_script.cmake
+++ b/cmake/gauze_run_start_script.cmake
@@ -23,6 +23,11 @@ function(gauze_run_start_script)
     set(GAUZE_ANDROID_EMULATOR_GPU "host")
   endif()
 
+  if("${GAUZE_ANDROID_EMULATOR_PARTITION_SIZE}" STREQUAL "")
+    # https://developer.android.com/studio/run/emulator-commandline
+    set(GAUZE_ANDROID_EMULATOR_PARTITION_SIZE 200)
+  endif()
+
   # Use:
   # * GAUZE_ANDROID_ADB
   # * GAUZE_ANDROID_EMULATOR
@@ -32,6 +37,7 @@ function(gauze_run_start_script)
   # * GAUZE_START_LOG
   # * ANDROID-SDK_ROOT
   # * GAUZE_ANDROID_EMULATOR_GPU
+  # * GAUZE_ANDROID_EMULATOR_PARTITION_SIZE
   configure_file(${GAUZE_START_EMULATOR_SCRIPT} "${start_script}" @ONLY)
 
   set(bash_path "/bin/bash")
diff --git a/cmake/templates/start-emulator.sh.in b/cmake/templates/start-emulator.sh.in
index 6cb1566..7e41deb 100644
--- a/cmake/templates/start-emulator.sh.in
+++ b/cmake/templates/start-emulator.sh.in
@@ -16,5 +16,6 @@ export "ANDROID_SDK_ROOT=@ANDROID-SDK_ROOT@/android-sdk"
     -no-window \
     -port "@GAUZE_DEVICE_PORT@" \
     -gpu "@GAUZE_ANDROID_EMULATOR_GPU@" \
+    -partition-size "@GAUZE_ANDROID_EMULATOR_PARTITION_SIZE@" \
     1> "@GAUZE_START_LOG@" \
     2> "@GAUZE_START_ERR@" &
diff --git a/docs/prereq/android.rst b/docs/prereq/android.rst
index 5002b2b..e0ee0c4 100644
--- a/docs/prereq/android.rst
+++ b/docs/prereq/android.rst
@@ -59,8 +59,8 @@ Emulator can be stopped by ``kill -9`` command:
   <username> 9160 ... /.../android-sdk/tools/emulator64-arm -avd gauze_android-19_armeabi-v7a -no-window -port 5678 -gpu host
   > kill -9 9160
 
-Emulator GPU
-============
+Other options
+=============
 
 You can set ``GAUZE_ANDROID_EMULATOR_GPU`` to control what GPU type will be
 using while creating Android emulator:
@@ -72,4 +72,9 @@ using while creating Android emulator:
   For Travis CI:
 
   * use ``host`` on macOS machines
-  * use ``none`` on Linux machines
+  * use ``off`` on Linux machines
+
+You can set ``GAUZE_ANDROID_EMULATOR_PARTITION_SIZE`` to specify the system
+data partition size in MBs.
+
+* https://developer.android.com/studio/run/emulator-acceleration#command-gpu