3 files changed, 18 insertions, 7 deletions
diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c
index c9d01290..bfa8a32e 100644
--- a/src/Common/Dlgcode.c
+++ b/src/Common/Dlgcode.c
@@ -6889,12 +6889,12 @@ retry:
 	return 1;
 }
 
-
-BOOL UnmountVolume (HWND hwndDlg, int nDosDriveNo, BOOL forceUnmount)
+static BOOL UnmountVolumeBase (HWND hwndDlg, int nDosDriveNo, BOOL forceUnmount, BOOL ntfsFormatCase)
 {
 	int result;
 	BOOL forced = forceUnmount;
-	int dismountMaxRetries = UNMOUNT_MAX_AUTO_RETRIES;
+	int dismountMaxRetries = ntfsFormatCase? 5 : UNMOUNT_MAX_AUTO_RETRIES;
+	DWORD retryDelay = ntfsFormatCase? 2000: UNMOUNT_AUTO_RETRY_DELAY;
 
 retry:
 	BroadcastDeviceChange (DBT_DEVICEREMOVEPENDING, nDosDriveNo, 0);
@@ -6904,7 +6904,7 @@ retry:
 		result = DriverUnmountVolume (hwndDlg, nDosDriveNo, forced);
 
 		if (result == ERR_FILES_OPEN)
-			Sleep (UNMOUNT_AUTO_RETRY_DELAY);
+			Sleep (retryDelay);
 		else
 			break;
 
@@ -6940,6 +6940,16 @@ retry:
 	return TRUE;
 }
 
+BOOL UnmountVolume (HWND hwndDlg, int nDosDriveNo, BOOL forceUnmount)
+{
+	return UnmountVolumeBase (hwndDlg, nDosDriveNo, forceUnmount, FALSE);
+}
+
+BOOL UnmountVolumeAfterFormatExCall (HWND hwndDlg, int nDosDriveNo)
+{
+	return UnmountVolumeBase (hwndDlg, nDosDriveNo, FALSE, TRUE);
+}
+
 
 BOOL IsPasswordCacheEmpty (void)
 {
diff --git a/src/Common/Dlgcode.h b/src/Common/Dlgcode.h
index 7dee2db5..781efeee 100644
--- a/src/Common/Dlgcode.h
+++ b/src/Common/Dlgcode.h
@@ -334,6 +334,7 @@ int DriverUnmountVolume (HWND hwndDlg, int nDosDriveNo, BOOL forced);
 void BroadcastDeviceChange (WPARAM message, int nDosDriveNo, DWORD driveMap);
 int MountVolume (HWND hwndDlg, int driveNo, char *volumePath, Password *password, int pkcs5, int pin, BOOL truecryptMode, BOOL cachePassword, BOOL sharedAccess,  const MountOptions* const mountOptions, BOOL quiet, BOOL bReportWrongPassword);
 BOOL UnmountVolume (HWND hwndDlg , int nDosDriveNo, BOOL forceUnmount);
+BOOL UnmountVolumeAfterFormatExCall (HWND hwndDlg, int nDosDriveNo);
 BOOL IsPasswordCacheEmpty (void);
 BOOL IsMountedVolume (const char *volname);
 int GetMountedVolumeDriveNo (char *volname);
diff --git a/src/Common/Format.c b/src/Common/Format.c
index 37fa38da..3ebfef1e 100644
--- a/src/Common/Format.c
+++ b/src/Common/Format.c
@@ -641,7 +641,7 @@ error:
 
 		if (retCode != TRUE)
 		{
-			if (!UnmountVolume (volParams->hwndDlg, driveNo, FALSE))
+			if (!UnmountVolumeAfterFormatExCall (volParams->hwndDlg, driveNo))
 				MessageBoxW (volParams->hwndDlg, GetString ("CANT_DISMOUNT_VOLUME"), lpszTitle, ICON_HAND);
 
 			if (dataAreaSize <= TC_MAX_FAT_SECTOR_COUNT * FormatSectorSize)
@@ -663,7 +663,7 @@ error:
 			goto fv_end;
 		}
 
-		if (!UnmountVolume (volParams->hwndDlg, driveNo, FALSE))
+		if (!UnmountVolumeAfterFormatExCall (volParams->hwndDlg, driveNo))
 			MessageBoxW (volParams->hwndDlg, GetString ("CANT_DISMOUNT_VOLUME"), lpszTitle, ICON_HAND);
 	}
 
@@ -836,7 +836,7 @@ BOOL FormatNtfs (int driveNo, int clusterSize)
 	}
 
 	// The device may be referenced for some time after FormatEx() returns
-	Sleep (2000);
+	Sleep (4000);
 
 	FreeLibrary (hModule);
 	return FormatExResult;