Hi When I bought my computer I got 2 1 TB drives. I installed Windows and all my software on drive C:\ all my data is on Drive D:\. Almost 2 years later I've only used 102 GB of Drive C:\ but Drive D:\ is a little over half full. I'll probably never run out of space on it but I'd like to partition Drive C:\ into 2 drives so I can use it for storage too. I know how to do it I've done it with other drives and never had any problems but... I have 2 questions. Is there any chance that doing this on my Windows drive will screw up the Windows installation? And how will this effect my Acronis backups? If the new C:\ drive is a different size will it still restore the OS to the smaller partition from my existing backups made when the drive was all in one piece? Or is there any chance that I could screw up Windows and have Acronis not restore it to the smaller partition. I just went through this with Ghost not working, I don't want to do that again. Thanks for the help Mike .