Cannot shrink C:/ drive! HELP!!

I was trying to do a dual-boot for Vista and 7. So, I wanted to create another primary partition for Drive C but for some reason it wouldn't let me. The shrink button is faded out. The "Size of available shrink space in MB: and Total size after shrink in MB:" is also faded out. But the Total size is 246799MB! BTW, this is what I have right now on Disk 0: EISA config, Drive C (Boot Partition), Drive D (Primary) and Drive E (Logical) How do I create another Primary Partition? Please help!

Disk Management won't move system files to shrink a partition.

It's unusual, but there may be a system file right near the end of the partition.

You could try the Free Partition Wizard and see what that reveals:

Free Download Partition Wizard

SIW2 said:

Disk Management won't move system files to shrink a partition.

It's unusual, but there may be a system file right near the end of the partition.

You could try the Free Partition Wizard and see what that reveals:

Free Download Partition Wizard

Click to expand...

But I did it before, when I made Drive D (Primary Partition)

First, most Windows disk programs won't let you shrink a volume that's in use (as the C:\ drive is when you're running Windows). So trying a 3rd party utility would be the first step. I have no experience with the freeware tools for this - but I do know that Acronis Disk Director will do this (it's not free).

Next, there's a possibility that the software doing the resizing isn't smart enough to relocate stuff that's on the high end of the partition - so a thorough defragging is essential (and it makes the resizing operation easier). I have had problems in the past resizing partitions - and it only happened when I tried to do several of the operations involved in resizing at once.