Norton Ghost 15.0 Won't Recognize C:\ Drive on Laptop

Norton Ghost 15.0 won't recognize the C:\ drive on my computer.  I am using Windows Vista Home edition, and my Toshiba laptop is set up to dual-boot Ubuntu and Windows Vista.  I am trying to use Norton Ghost to copy my entire hard drive onto a new, larger drive.  

 

Ghost recognizes my new drive, which is connected to the laptop via USB, but it won't recognize my C:\ drive.  C:\ doesn't appear in the Copy My Hard Drive wizard, and it doesn't appear in the Advanced -> Drives menu.  All that appears is my external drive.

 

What can I do?

Norton Ghost 15.0 won't recognize the C:\ drive on my computer.  I am using Windows Vista Home edition, and my Toshiba laptop is set up to dual-boot Ubuntu and Windows Vista.  I am trying to use Norton Ghost to copy my entire hard drive onto a new, larger drive.  

 

Ghost recognizes my new drive, which is connected to the laptop via USB, but it won't recognize my C:\ drive.  C:\ doesn't appear in the Copy My Hard Drive wizard, and it doesn't appear in the Advanced -> Drives menu.  All that appears is my external drive.

 

What can I do?