Hard Drive

I have a 650GB Sata H.D.How can I partition it to half this?

Use Disk Management that is built in all Windows OS or use third party applications.

Here are a few third party applications.

• EaseUS Partition Master Home Edition
• Partition Wizard Home

Along with Cliff's excellent advice...here's a youtube clip.

How to partition a hard drive on Windows 7 - YouTube

You could try partition your hard drive in windows7 build-in disk management, right click the exsited partition and select shrink partition, after that you will release an segment of unallocated space->you could create partition on this unallocated space.

If disk management could not achieve your goal, you could choose partition magic software: New Upgrade Partition Magic for Windows7 and Vista

I have a 650GB Sata H.D.How can I partition it to half this?

You don't - if I take your question literally. But I assume you mean you have a 650Gb drive, and you want to partition it into two 325Gb partitions.

Is there data already on this drive?

If so, I recommend EaseUS Partition Master.

To partition windows why not choose Partition Mgic For Windows 7, it is pretty good for win7

Thanks for your help Bill.

I use Easeuse partition manager.
Works like a charm