Here is an email i got from Western Digital, that confused me even more??? what is a "partition"? Still not sure how to be able to use the other 250GB's left over on the new 500GB drive....
Dear, Miss Broadview
Thank you for contacting Western Digital Customer Service and Support. My name is Tirso.
I apologize for the inconvenience.
The cloning process makes an exact copy of the source drive to the destination drive. This implies that the partition of the drive being a 250 GB's hard drive is what will be cloned in your case. That means that your 500 GB's drive will still only show 250 GB's partition after the cloning. The remaining space will be unallocated space in your drive. You will need to partition the remaining space after the drive has been cloned in order to be able to use that space. When a smaller drive is cloned into a bigger drive it does not mean that the drive will become smaller, it just means that the partition will be cloned the same as the source drive.
Before you proceed to clone your drive please make sure to do research on the software that you are going to use for cloning.
Sincerely,
Tirso
Western Digital Service and Support
http://support.wdc.com