diff --git a/twrp.cpp b/twrp.cpp
index dac0093..bb062f7 100755
--- a/twrp.cpp
+++ b/twrp.cpp
@@ -117,8 +117,50 @@
 	if (!TWFunc::Path_Exists(fstab_filename)) {
 		fstab_filename = "/etc/recovery.fstab";
 	}
+
+	// Begin SAR detection
+	{
+		TWPartitionManager SarPartitionManager;
+		printf("=> Processing %s for SAR-detection\n", fstab_filename.c_str());
+		if (!SarPartitionManager.Process_Fstab(fstab_filename, 1, 1)) {
+			LOGERR("Failing out of recovery due to problem with fstab.\n");
+			return -1;
+		}
+
+		mkdir("/s", 0755);
+
+#if defined(AB_OTA_UPDATER) || defined(__ANDROID_API_Q__)
+		bool fallback_sar = true;
+#else
+		bool fallback_sar = property_get_bool("ro.build.system_root_image", false);
+#endif
+
+		if(SarPartitionManager.Mount_By_Path("/s", false)) {
+			if (TWFunc::Path_Exists("/s/build.prop")) {
+				LOGINFO("SAR-DETECT: Non-SAR System detected\n");
+				property_set("ro.twrp.sar", "0");
+				rmdir("/system_root");
+			} else if (TWFunc::Path_Exists("/s/system/build.prop")) {
+				LOGINFO("SAR-DETECT: SAR System detected\n");
+				property_set("ro.twrp.sar", "1");
+			} else {
+				LOGINFO("SAR-DETECT: No build.prop found, falling back to %s\n", fallback_sar ? "SAR" : "Non-SAR");
+				property_set("ro.twrp.sar", fallback_sar ? "1" : "0");
+			}
+			SarPartitionManager.UnMount_By_Path("/s", false);
+		} else {
+			LOGINFO("SAR-DETECT: Could not mount system partition, falling back to %s\n", fallback_sar ? "SAR":"Non-SAR");
+			property_set("ro.twrp.sar", fallback_sar ? "1" : "0");
+		}
+
+		rmdir("/s");
+
+		TWFunc::check_and_run_script("/sbin/sarsetup.sh", "boot");
+	}
+	// End SAR detection
+
 	printf("=> Processing %s\n", fstab_filename.c_str());
-	if (!PartitionManager.Process_Fstab(fstab_filename, 1)) {
+	if (!PartitionManager.Process_Fstab(fstab_filename, 1, 0)) {
 		LOGERR("Failing out of recovery due to problem with fstab.\n");
 		return -1;
 	}