I have just purchased a new computer which came with Windows 7 home premium 64bit preinstalled with a 1T hard drive. I want to partition the available 931g hard drive into two partitions. I followed the instructions in Disk Management and shrunk the 931g partition by creating a 459.04g partition (blue line at top) and another simple partition of 451.38g which says it is unallocated and has a black line at the top. HOW do I make the unallocated partition active (I have followed the new partition wizard but end up with a message box which eventually tells me no.) I have repartitioned hard drives in the distant past but used a program for that purpose which I no longer have. Any advice would be appreciated Thanks. Berni