diff --git a/lib/cli/writer.js b/lib/cli/writer.js
index 103c0d43..173d7dcb 100644
--- a/lib/cli/writer.js
+++ b/lib/cli/writer.js
@@ -75,7 +75,15 @@ exports.writeImage = (imagePath, drive, options, onProgress) => {
   }).then(() => {
     return diskpart.clean(drive.device)
   }).then(() => {
-    return fs.openAsync(drive.raw, 'rs+')
+    /* eslint-disable no-bitwise */
+    const flags = fs.constants.O_RDWR |
+      fs.constants.O_EXCL |
+      fs.constants.O_NONBLOCK |
+      fs.constants.O_SYNC |
+      fs.constants.O_DIRECT
+    /* eslint-enable no-bitwise */
+
+    return fs.openAsync(drive.raw, flags)
   }).then((driveFileDescriptor) => {
     return imageStream.getFromFilePath(imagePath).then((image) => {
       if (!constraints.isDriveLargeEnough(drive, image)) {