I have added both Western Digital and Maxtor drives to my HP. Both mfg's included software to copy info from old to new drive. Worked great for me to maintain a BU system drive. I don't pirate, but I do tend to tinker a bit too much, so a backup is almost a necessity.
Also, Norton Ghost has always been my regular tool for creating backup's of both my data and system drives.
After I finally started reading the tech dox with the software, I figgered out what was causing all the grief when I tried to boot after using. Ya gotsta disconnect oner or t'other of the system drives.
Knock on wood... never had a bad clone yet!