Repartitioning Hard Drive on Server


  • I am running Windows Server 2003 with Raid 5 originally partioned into C and D drives. OS is on the c drive with only 10GB of space. I ran out of space in C drive (still critical after cleaning) and still have a lot of space on the D drive. What are my options in allocating more space to the C drive? Thank You !

    Thursday, March 20, 2008 4:53 PM


All replies




    This forum is for SCE 2007 related issues. For problems with Windows server 2003, please check the resources available at:


    RAID discussion in Windows server 2003 newsgroup


    The newsgroups should be particularly helpful to you.


    Here I also found some related articles for your reference:


    RAID deployment



    Thanks and Regards.

    Monday, March 24, 2008 4:23 AM
  • very easy to solve this problem.

    It is the same to resize RAID virutal partition with physical disk partition, you just need to shrink a data (virtual) partition, after that extend the system partition with the unallocated space. More resources for you:

    How to resize RAID 5 partition

    How to repartition Server 2003

    how to extend c drive on server 2003

    How to resize partition for server 2003


    Wednesday, August 26, 2009 2:23 PM
  • In this situation, windows built-in Low Disk space warning will pops out randomly if the space is not been extended. Windows server 2003 has a built-in disk management tool which allows you to extend partition or shrink partition to have a larger or smaller partition but it is not available for the system partition. By the way, some third party server partition tool will help you a lot in extend server system partition and here is a detailed one:

    Wednesday, September 16, 2009 7:59 AM
  • Remember to backup system and files before any operations to the server.

    Don't break the RAID array when resizing the partition, just work as on physical disk partition, I suggest you check under disk management and make sure the configration of your RAID array. see this guide to resize RAID 5 partition

    Wednesday, November 18, 2009 8:14 AM
  • There are some guides, hope they will help other people who have the same problem.

    How to solve c drive running out of space problem?

    How to resize partition on RAID 5 ?

    How to extend c drive on Server ?

    Tuesday, April 13, 2010 1:25 PM
  • You can use Partition Assistant to repartition on Server 2003. Refer to more information here:

    Monday, May 03, 2010 7:37 AM
  • As applications continue to be installed into the Windows system, suddenly one day find the system partition do not have enough free disk space. I found an example: how to extend system partition in Windows.

    Thursday, May 27, 2010 2:57 PM
  • You just need to shrink partition D and extend the C drive with the unallocated space. With partition software, just drag and move in the disk map, very easy. There are many Windows Server repartition software, such as Acronis disk director, paragon partition manager, partition wizard, easeus partition master, partition assistant, etc. For features comparison, see

    As you are running Windows Server, I recommend using partition magic server, the unique features, hot resize and enhanced data protection is helpful. For detailed steps to repartition Windows server 2003

    Sunday, December 05, 2010 3:34 PM
  • Hi everyone,

    Although this question has been marked "Answers", I think there is a better solution to repartition hard drive on Server.

    You can repartition Server 2003 hard rive with some reliable Partition Magic Server software which enables you to keep all data intact.

    What's more, there is a detailed tutorial on how to repartition Windows Server 2000/2003/2008 hard drive:


    Wish it helpful.

    Friday, April 01, 2011 11:41 AM
  • U cannot back up a hard drive that is larger than 2 TB. You must partition the hard disk into drives that are 2 TB or less, and then add the new hard drives that you create to server storage.When an unformatted internal hard disk is detected on the Windows SBS 2011 Essentials, a health alert is raised that contains a link to the Add a New Hard Disk wizard. The Add a New Hard Disk wizard walks you through the formatting of the hard disk. When the wizard is finished, one or more, depending on the size of the disk, logical hard drives formatted will be created on the hard disk and formatted as NTFS. If the size of the hard disk is less than 2TB, only one logical drive is created. If it is larger than 2TB, multiple logical drives are created. The logical hard drive size is kept under 2TB to ensure that the server can be backed up using the Server Backup feature.If the hard drive is already partitioned and formatted into one or more partitions that are larger than 2 TB, you do not receive the alert that an unformatted hard disk generates. Instead, you received the message that a hard drive is too large to be backed up. You must repartition the hard drive into partitions that are 2 TB or less using Disk Management.

    Follow the steps:

    1. On the server, click Start, click Administrative Tools, and then click Server Manager.

    2. In Server Manager, click Storage, and then click Disk Management.

    3. Right-click the large drive, click Delete Volume, and then click Yes.

    4. Right-click the Unallocated hard disk drive, and then click New Simple Volume.

    5. In the New Simple Volume Wizard, create and format a volume that is 2 TB (2,000,000 MB) or less.

     U may also use AOMEI Backupper to achieve that goal.It provides U a lot of help in backup and repartition hard drive.


    Tuesday, August 20, 2013 8:01 AM
  • OK! Thanks! These answers really work!

    I have ever added enough free space to my C drive with the guidance of a partition resizing tool:

    PS: If you don’t want to lose anything important, just back it up well in advance! 

    Monday, February 10, 2014 1:49 AM
  • Shrink your D drive and add space to your C drive in Disk Management.

    Or directly use some professional partition resizing tools.

    Note: Always make data backups before you start to resize your partition in case of data loss.

    Tuesday, March 11, 2014 2:07 AM