diff --git a/Boot-HermitCore-from-a-raw-image.md b/Boot-HermitCore-from-a-raw-image.md
index 21e5441..bf5acb3 100644
--- a/Boot-HermitCore-from-a-raw-image.md
+++ b/Boot-HermitCore-from-a-raw-image.md
@@ -85,4 +85,4 @@ $ sudo umount /mnt
 $ sudo qemu-nbd -d /dev/nbd0 
 ```
 
-Now, you are able to upload the raw image to Google Compute Platform and to create an instance from this file.
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+Now, you have to pack the image with `tar -cSzf disk.tar.gz disk.raw`, to upload the tar file to Google Compute Platform and finally to create an instance from this file.
\ No newline at end of file