diff --git a/Boot-HermitCore-from-a-raw-image.md b/Boot-HermitCore-from-a-raw-image.md
index a5e6634..6121dfe 100644
--- a/Boot-HermitCore-from-a-raw-image.md
+++ b/Boot-HermitCore-from-a-raw-image.md
@@ -41,6 +41,8 @@ $ sudo losetup --find --show -o 1048576 stream.raw
 /dev/loop2
 ```
 
+**Note:** The numbers of the loop devices depend on your systems and if you already setup another loop device.
+
 The option `-o` defines the offset from start of the file. The offset 1048576 is actually 1024^2 = 1MB and that's the start of our partition. Now, we are able to format our partition.
 
 ```bash