So many laptop thefts out there and getting your personal information; what can you do to prevent this? Trust Platform Module ship allows you to improve encryption, ensure that even if your disk is removed from your laptop, it is still secure and greatly enhances security. TPM chip is supposed to do prevent yourself from reading a disk not attached to the motherboard. You should not only not have been able to read it once mounted in the cage, you should not have been able to copy it at all. You can decide to go with dd because it does a bit for bit copy, rather than needing access to the file system. This is important because the disk, for the most part, is encrypted. You can use dd to clone an encrypted disk. LinuxJournal.com shows you step by step how to do this.