-# Discover disk images by looking for .img.md5sum files in $imagedir
-imgmd5=$(ls $imagedir/*.img.md5sum 2>/dev/null | head -n 1)
+# Discover disk images by looking for .iso.md5sum files in $imagedir
+imgmd5=$(ls $imagedir/*.iso.md5sum 2>/dev/null | head -n 1)