cloning hard disk for recovery

[Paul Lemmons <paul.lemmons@xxxxxxxxx>]

My hard disk is squealing like a rodent on fire. I think I am an 
trouble. I believe I can read the whole drive so I can get the data from 
it. I have seen a number of references to using dd to clone a disk. That 
is what I am hoping to do. Here are the steps I am planning to do, 
please redirect me as needed because I have not had to do this before.

1) Install new hard disk along side the current hard disk
2) dd if=/dev/hda of=/dev/hdb conv=noerror,sync
3) remove bad hard disk
4) re-cable the new hard disk using old hard disk connection
5) pray
6) reboot

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