From 587e6db4f16291d8b6f22d0937a4bff87bc8ffc0 Mon Sep 17 00:00:00 2001
From: Mounir IDRASSI <mounir.idrassi@idrix.fr>
Date: Wed, 22 Jul 2020 17:04:32 +0200
Subject: Windows: Warn about Fast Startup if it is enabled during system
 encryption or volume creation and propose to disable it

---
 src/Common/BootEncryption.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/Common')

diff --git a/src/Common/BootEncryption.cpp b/src/Common/BootEncryption.cpp
index 502b4e06..0f415394 100644
--- a/src/Common/BootEncryption.cpp
+++ b/src/Common/BootEncryption.cpp
@@ -5673,6 +5673,16 @@ namespace VeraCrypt
 		
 		if (!rescueIsoImagePath.empty())
 			CreateRescueIsoImage (true, rescueIsoImagePath);
+
+		// check if Fast Startup is enabled and if yes then offer to disable it
+		BOOL bHibernateEnabled = FALSE, bHiberbootEnabled = FALSE;
+		if (GetHibernateStatus (bHibernateEnabled, bHiberbootEnabled) && bHiberbootEnabled)
+		{
+			if (AskWarnYesNo ("CONFIRM_DISABLE_FAST_STARTUP", ParentWindow) == IDYES)
+			{
+				WriteLocalMachineRegistryDwordValue (L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Power", L"HiberbootEnabled", 0);
+			}
+		}
 	}
 
 	bool BootEncryption::IsPagingFileActive (BOOL checkNonWindowsPartitionsOnly)
-- 
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