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My C drive is 18GB. I have other 18GB unpartined space on same HD.

I know that in vista i have the option to expand the disk by going in diskmanagement . How can i do in window 2003

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GParted is your friend.

The GParted application enables you to change the partition organization on a disk device while preserving the contents of the partitions.

With GParted you can accomplish the following tasks:

* Create a partition table on a disk device.
* Enable and disable partition flags such as boot and hidden.
* Perform actions with partitions such as:
      o create or delete
      o resize or move
      o check
      o label
      o copy and paste
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+1 because "GPartED is your friend" is EXACTLY what went through my mind, word for word. :) – Ƭᴇcʜιᴇ007 Jan 13 '10 at 3:28
Having a Linux Live CD, such as SystemRescueCD and various other alternatives that are out there, is a must. It will allow you to do all kinds of system maintenance both when you can and can't get into Windows. If you don't have one of these discs I suggest you spend the time to download it and burn it right now. You will be glad you did in the future. GParted is included on the one I linked to. – Marcin Jan 13 '10 at 3:39

Gparted will be able to do this.

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In some rare cases using GParted on the system disk results in undesirable side-effects.

From Extend a Windows Server 2003 disk volume:

Another option is to take advantage of the new Diskpart.exe utility that comes standard with Windows Server 2003. This utility allows you to create, delete, and manage partitions on your hard drive.

To use Diskpart.exe, follow these steps:

  1. Open a command prompt by going to Start | Run.
  2. Enter diskpart in the Open text box, and press [Enter].
  3. At the DISKPART prompt, enter list volume.
  4. Enter select volume x, where x is the volume number listed that you want to expand.
  5. Enter extend, and press [Enter].

When you're finished, use the Disk Management snap-in to check out your new volume. It should now take up the rest of the available space on the device.

Do I need to mention backups, before such an operation.

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Expending C: on the fly? – Bobby Jan 13 '10 at 12:59
Yes, on the fly. – harrymc Jan 13 '10 at 13:24
I tried this and it did not work. Diskpart does not allow you to extend the main partition on which you have installed windows. – Mugen Aug 12 '11 at 9:53
@Mugen: You may try to move the page file to another partition, but this may or may not help. This article only says that sometimes the system cannot be extended. In that case, you will need a 3rd-party product. – harrymc Aug 12 '11 at 10:36

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