Ubuntu 12.04.01 Hard Drive Drop In [closed]

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http://unix.stackexchange.com – Possible Duplicate: Moving linux install to a new computer I have two similar machines running Ubuntu Server 12.04.01. They are not the same machine, but similar. Can I take the hard drive out of one machine and drop it in the other machine? The other machine has a little bit better specs, but the older machine has the configurations just as I want them. What might I encounter other than Ubuntu having to find the new hardware? (HowTos)