From 95656827dd186d957430da5c0bc4a27b98b098f9 Mon Sep 17 00:00:00 2001
From: Tao Bao <tbao@google.com>
Date: Thu, 12 Sep 2019 13:03:06 -0700
Subject: Update the instruction for building recovery image on Pixels.

Test: N/A
Change-Id: I14d7bba5b214cc0bf43d6294cff1b7dcbea72ee8
---
 README.md | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 0ccc10b50..bd1cf7dea 100644
--- a/README.md
+++ b/README.md
@@ -4,19 +4,33 @@ The Recovery Image
 Quick turn-around testing
 -------------------------
 
-    mm -j && m ramdisk-nodeps && m recoveryimage-nodeps
+* Devices using recovery-as-boot (e.g. Pixels, which set BOARD\_USES\_RECOVERY\_AS\_BOOT)
 
-    # To boot into the new recovery image
-    # without flashing the recovery partition:
-    adb reboot bootloader
-    fastboot boot $ANDROID_PRODUCT_OUT/recovery.img
+      # After setting up environment and lunch.
+      m -j bootimage
+      adb reboot bootloader
+
+      # Pixel devices don't support booting into recovery mode with `fastboot boot`.
+      fastboot flash boot
+
+      # Manually choose `Recovery mode` from bootloader menu.
+
+* Devices with a separate recovery image (e.g. Nexus)
+
+      # After setting up environment and lunch.
+      mm -j && m ramdisk-nodeps && m recoveryimage-nodeps
+      adb reboot bootloader
+
+      # To boot into the new recovery image without flashing the recovery partition:
+      fastboot boot $ANDROID_PRODUCT_OUT/recovery.img
 
 Running the tests
 -----------------
+
     # After setting up environment and lunch.
     mmma -j bootable/recovery
 
-    # Running the tests on device.
+    # Running the tests on device (under normal boot).
     adb root
     adb sync data
 
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