My brother-in-law has an old (8 yrs) Gateway desktop. The hard drive needs to be replaced. Can he just put in a new drive and use an Acronis boot disk to restore his old drive from a back up that's on an external drive? If so, would anything have to be done with the new drive before hand? BTW, the boot disk he has was made from an Acronis True Image Home 2011 installation on his laptop running Win 7. The desktop backup is of a Win XP OS that had the same version of Acronis. Is this a problem? And no, I don't why he didn't make a boot disk for his desktop!