I tried to clone my 200GB to a 1TB using Acronis True Image 2009. I tried this several times w/ three different hard drives,all new.
Each time got "missing operating system " when I booted up the new drive. All the data ,ie text,songs & photo did transfer but for some reason apparently the MBR or boot sector could not be found.
I tried using Recovery Console to fix mbr & fixboot. Tried reformating the HD. No luck.
Finally found the fix. I had been setting up the TI program to transfer the info from source to target drive "proportionately" each time. When I set the transfer to be done "as is" the cloned drive was bootable. Finally success!
Now the only downside was that only 200 GB was usable on the TB drive. The rest,close to 800 GB was unallocated. But not to worry because the fix was easy.
So I had to resize the partition. Using Easeus from Download .com , I was eassily able to move the partition to the right so the formally unallocated space was added to the newly named C drive such that all the drive space was now fully usable.
Maybe this will help somebody.