How to make an image of your Linux Install

I'm looking to physically replace my current linux boot hard drive with a new hard drive, but want to 'copy' the existing boot drive contents onto that new drive. I assume the best way to do this is to create an image of the current one and then restore it onto the new drive. I'd appreciate some details on doing this. In particular, I assume that the fstab will need to be edited for the new drive after restoring the image onto it. Thanks!