Originally Posted by Uday123
How to add the extra 1GB space to / (root) partition (i.e. /dev/hda3)?
I recommend that you boot your VM from System Rescue CD
. The process should be similar to however you installed Linux on your VM, assuming you installed from a CD-ROM or an ISO. I have never used XEN, so I cannot give you the exact steps.
Once you have booted System Rescue CD, use partimage to create an image of each partition (except the swap partition). Then create a new VM with the desired hard drive size. Boot the new VM using System Rescue CD and use partimage to restore the image. When you reboot the VM, you should see a larger hard drive.