Increase C drive partition on Amazon EC2

2011.02.08

1. Stop the instance.
2. Detach the root device.
3. Create the snapshot of the root device.
4. Create a new volume using the snapshot of the root device, but with a larger size.
6. Attach the new volume to your instance as the root device (/dev/sda1).
7. Start instance to make sure it works.
8. Go to diskmgmt.msc, right click on C drive and chose extend Volume. Complete the Wizard.
   It will sync the new alloted ebs space to boot partition.