diff --git a/boot/default.ks b/boot/default.ks
index d595288..405eb59 100644
--- a/boot/default.ks
+++ b/boot/default.ks
@@ -21,29 +21,20 @@ if HOMECONNECTION:isconnected {
 print "============= BOOT SEQUENCE COMPLETE =============".
 
 
-function copy_scripts {
+local function copy_scripts {
     //
     // Copy all .ks-files from the archive to the CPU's internal storage.
     //
     parameter archive_dir is ARCHIVE:files.
 
     for item in archive_dir:values {
-        function iteration {  // allows for quick-bailing using 'return' (kOS doesn't have the 'continue' keyword
-            local item_path is "/" + path(item):segments:join("/").  // full path of item without volume id
-            if item:name[0] = "."  // skip Linux hidden files and directories (e.g. .git)
-                return.
-
-            // Recurse on directories
-            if not item:isfile {
-                copy_scripts(item:list).
-                return.
-            }
-
-            if item:extension <> "ks"  // skip non-script items (e.g. README.md)
-                return.
-            if CORE:volume:exists(item_path) and item:size = CORE:volume:open(item_path):size  // skip if file exists locally with the same size
-                return.
+        // Recurse on directories
+        if not item:isfile {
+            copy_scripts(item:list).
+        }
 
+        local item_path is "/" + path(item):segments:join("/").  // full path of item without volume id
+        if should_copy(item, item_path) {
             print "Copying " + item_path.
             copypath(item, path(CORE:volume):combine(item_path)).
             if item_path = CORE:bootfilename {
@@ -52,6 +43,33 @@ function copy_scripts {
                 reboot.
             }
         }
-        iteration().
     }
 }
+
+
+local function should_copy {
+    parameter item.
+    parameter item_path.
+
+    // Skip Linux hidden files and directories (e.g. .git)
+    if item:name[0] = "." {
+        return false.
+    }
+    // Skip non-script items (e.g. README.md)
+    if item:extension <> "ks" {
+        return false.
+    }
+    // Always copy files we don't have
+    if not CORE:volume:exists(item_path) {
+        return true.
+    }
+    // Copy file if local one has different size
+    if item:size <> CORE:volume:open(item_path):size {
+        return true.
+    }
+    // Copy file if local one has different contents
+    if item:readall:string <> CORE:volume:open(item_path):readall:string {
+        return true.
+    }
+    return false.
+}