floatinteger

Many thanks to both for the helping I think encryption is not a solution since the disk can be cloned in raw mode using clonezilla, and installing a yubikey is impossible since the person needs access to the computer if wants to install another disk or something. To now, my only way is as I said, test the tie of the mainboard or hard disk serial, but I don't know hot to, so if someone can help.... Thanks

Many thanks for your answer, localzuk, I really appreciate your time and interest. TPM could be a great solution, but it means adding more hardware since it's not included on motherboard, so it's discard (I need a method that doesn't require special hardware) I can't install a physical lock on the case, neither lock bios or boot menu. The user must be able to use the computer, add new drives or even format hard drive using a tool in a usb drive if he needs. It's even desirable (althought not 100% needed) that user can make a backup of the system disk via cloning, and restoring it when needed. BUT I don't want the user to clone disk and use the operative system and all configurations and programs in a different machine, since it's intended to be used only on this computer (I hope that my explanation is ok, hehe) I know that there is no infallible method for this, but is better having a security method that can be skipped to have no security method at all. If I add some kind of protection, at least the user will have to make some research. I've been reading something about hostid, and if I can tie the operative system to something depending on hardware, it is an important "first step". Many thanks again, I hope someone can lend me a hand. Regards

Hello there, I would like to protect a Linux system from cloning, I don't mind if the cloned hard drive works in the same computer, but I need to avoid it to work in other one, even if it uses exactly same mainboard model and rest of computer parts. I want the cloned system to get frozen or simply restart continously if it's used in another computer. I found a thread in other forum that talks about a test of the NIC interface's MAC. It could be a good solution. The issue is that I have no information at all about how to do it, nor the software to use. Of course, I would like it to be as "unbreakable" as possible. Many regards in advance