diff --git a/README.md b/README.md
index 62a5ae1..bf09a0b 100644
--- a/README.md
+++ b/README.md
@@ -9,13 +9,13 @@ one of its maintained forks.
 datadisk Cookbook
 =================
 
-This cookbook formats and mounts a second disk (datadisk) on the specified mountpoint. If you like living dangerously, you can try this with an existing dir by using ::existing_datadir, but that code is less polished (this is done in single user mode using rsync, which is somewhat finicky).
+This cookbook formats and mounts a second disk (datadisk) on the specified mountpoint. If you like living dangerously, you can try this with an existing dir by using `::existing_datadir`, but that code is less polished (this is done in single user mode using rsync, which is somewhat finicky).
 
 Requirements
 ------------
-- a second disk following the format of /dev/[sx]v?d[a-z], e.g. /dev/sdb or /dev/xvde, containing a partition without filesystem
+- a second disk following the format of `/dev/[sx]v?d[a-z]`, e.g. `/dev/sdb` or `/dev/xvde`, containing a partition without filesystem
 
-for the ::existing_datadir recipe:
+for the `::existing_datadir` recipe:
 - an OS using upstart
 - recent, working (believe is what you do in church!) backups (though tested and with several failsafes in place, this cookbook still does pretty scary stuff.)
 
@@ -76,8 +76,9 @@ Contributing
 ------------
 
 e.g.
+
 1. Fork the repository on Github
-2. Create a named feature branch (like `add_component_x`)
+2. Create a named feature branch (like `add_component_x`) 
 3. Write your change
 4. Write tests for your change (if applicable)
 5. Run the tests, ensuring they all pass
diff --git a/providers/storage.rb b/providers/storage.rb
index bf48a0c..92a231c 100644
--- a/providers/storage.rb
+++ b/providers/storage.rb
@@ -16,12 +16,12 @@ def whyrun_supported?
   partition = "#{disk}1"
 
   execute "partition the disk" do
-    command "echo -e "n\np\n1\n\nw" | fdisk #{disk}"
-    not_if { File.exist?(partition) }
+    command "echo -e 'n\np\n1\n\n\nw\n' | fdisk #{disk}"
+    not_if { ::File.exist?(partition) }
   end
 
   execute "format the disk" do
-    command "mkfs -t ext3 #{partition}"
+    command "mkfs -t ext4 #{partition}"
     not_if { disk.nil? || ::File.directory?("#{datadir}") }
   end