diff --git a/Boot-HermitCore-from-a-raw-image.md b/Boot-HermitCore-from-a-raw-image.md
index 4dec00e..b5e52e2 100644
--- a/Boot-HermitCore-from-a-raw-image.md
+++ b/Boot-HermitCore-from-a-raw-image.md
@@ -3,10 +3,10 @@ Sometime is it useful to boot HermitCore from a raw image. For instance, [Google
 In this tutorial, an image will be created for the application _stream_. At first, we create with `dd` an raw file. A size of 1 Gb is the smallest possible size for the Google Compute Platform and *large* enough.
 
 ```bash
-$ dd if=/dev/zero of=stream.raw bs=1G count=1
+$ dd conv=notrunc if=/dev/zero of=disk.raw bs=1G count=1
 1+0 records in
 1+0 records out
-1073741824 bytes (1.1 GB, 1.0 GiB) copied, 2.10712 s, 510 MB/s
+1073741824 bytes (1.1 GB, 1.0 GiB) copied, 1.03282 s, 1.0 GB/s
 ```
 
 Like a normal hard disk, we have to partition the image. The following command create one big partition.