How To Create a Windows 8 Partition

How to create a Windows 8 PartitionWindows 8 Partitions and Volumes

 'Partition' is a beautifully descriptive word for dividing up a disk.  Sadly for me, these days Microsoft talks of 'Volumes' rather than 'Partitions'.

How to Manage Windows 8 Partitions


Disk Partition Basics

Launch Windows 8's Computer Management, and then select Disk Management.  To get started on this quest just type 'Computer' at the Metro-style UI.

Windows 8 Partition

System Reserved: This is a special 100 MB volume created when Windows 8 is installed, its purpose is to hold the System files securely.  The setup routine takes care of marking this partition primary as well as active.

Perhaps the main reason why Microsoft creates this System Reserved volume – separate from the C drive – is because here is where BitLocker stores encryption information safely.

System (Partition): Observe the word 'System' in the Status column, it contains the Boot Manager code (bootmgr) and the Boot Configuration Database.  Note: boot.ini and ntldr have been superseded in Vista and later Windows operating systems.

Boot (Partition): Here you find the Windows folder and all the operating system files.  On dual-boot computers pay close attention as to which partition is the current 'Boot'

Key Point: Even on multi-boot machines there is only one system partition.

'Shrink' Creates Another VolumeShrink Volume Windows 8

Problem: Only one huge volume (C:)

Solution: Shrink Volume.


  1. Launch the Disk Manager (See above)
  2. Right-click the (C:)
  3. Select: 'Shrink Volume'.  See screenshot right.
  4. Windows 8 displays: Querying Shrink Space.
  5. Enter the amount of space to shrink.

Shrink Volume Windows 8

Tip: Don't be too greedy.  Leave a little extra space on the (C:)

Follow Through: Create a new volume from the resulting free space.  Just right-click the green block that appears in Disk Manager.

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Reasons Why You May Need Another Partition

  • To install a second operating system and thus dual-boot.
  • To separate your application data from the operating system's files.
  • To store files that you share with other users separately.
  • To hold all your downloads in one area.
  • A special place where you synchronize files with the cloud.

Most of these reasons are just a matter of preference, some are not even 'best practice'.

Create a New Partition (Simple Volume)Shrink Volume Windows 8

While I talk of a new partition, Microsoft's terminology is of a New Simple Volume.

The good news is it's intuitive to create, just right-click in the green area of free space.  Select the first item on the drop-down menu.
New Simple Volume …

A partition, sometimes also called a volume, is an area on a hard disk that can be formatted with a file system and identified with a letter of the alphabet. For example, drive C on most Windows computers is a partition.

Create a New Partition During a Windows 8 InstallCustom Install Windows 8

If you are reusing an old Vista machine, then you may wish to start with a clean machine, and this involves reformatting or even deleting partitions. 

The key is to find the Custom: Install Windows button.  Then seek the link called:

 'Drive options (advanced)'.

New – For your new partition.

Delete – Zap the existing partition, remember this means you lose all that data!

Format – Again, all data will be deleted!

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Primary Partitions -v- Extended Partition

When Windows 8 employs Disk Management to create partitions on a basic disk, the first three partitions are primary partitions.  Should you need more, the fourth partition is created as an extended partition; in this light blue area you can create an unlimited number of extra Logical Drives.

An extended partition is a work-around to break the 4 primary partition rule. Logical drives store data in the same way as primary partitions, but they cannot be used to start an operating system.

Primary and Logical Drives Windows 8

Color Coding
Microsoft does a good job of color coding the different types of partition.  In case you were wondering, each disk can have 3 primary and one logical partition.

Summary of Windows 8 Partitions

Take the time to understand Windows 8's volumes and you will be rewarded by shrinking the C drive if you have a compelling reason to create another volume.

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Microsoft Windows 8 Install Related Topics

How to Install Windows 8  • Windows 8 Live ID Logon  • Win 8 Install  • Windows 8.1 Install

Windows 8 Uninstall  • Windows 8 Hyper-V  • Join Windows 8 to Domain  • Windows 8 Dual Boot

Windows 8 Remote Desktop  • Windows 8 RecImg – Recreate Image