This restricts access to the bootloader of the device though this has also turned to be the bone of contention between the Prime users and Asus. (goodereader.com)
Use this post if you want to learn how to successfully unlock the bootloader of your device without bricking it. (android.gs)
Now, in order to use and apply the one click root method for your Nexus 10, you will first have to unlock the bootloader of your device; for doing that you can use our suitable guide (use the link from the introduction) from where you can learn everything about the mentioned operation. (android.gs)