Originally posted by suppafreak
Might not work because the boot sector data will not copy to the new HD.
Not even that, You can't simply copy the Entire OS (Yes and the MBR) To a new Harddrive.
Instead you take out your current Harddrive, Put the new one in, Boot off a OS Disc such as windows xp or whatever you want to install, you format it install the OS then you put the original HD in and copy the data over.
You would then Format the Old HD in Disk Managment. (Making sure you got all the data you wanted from it beforehand.)