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Size

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Applies To: Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Vista

Size specifies the size of the partition to create, in megabytes (MB).

Values

size_in_megabytes

Specifies the size of the partition that you create, in megabytes.

For example, to create a 2 gigabyte (GB) partition, set Size to 2000.

Note

Do not create a value for Size that entirely fills or exceeds the available space, because Windows® reserves a small amount of space to manage partitions. For example, if you create an extended partition with 2000 MB, and you create two logical partitions with the size of 1000 MB each inside that partition, the second partition is not created. An error is logged, and installation is terminated.

  • To fill the available space on the drive with a primary partition, use the CreatePartition:Extend setting. Do not set CreatePartition:Size.

  • To fill the available space on an extended partition with a logical partition, set CreatePartition:Size to a small value, such as 100. Set ModifyPartition:Extend to true. Do not set CreatePartition:Extend. For more information, see How to Configure More than Four Partitions on a BIOS-Based Hard Disk.

  • Do not set both CreatePartition:Size and CreatePartition:Extend. If a value for Size is specified and CreatePartition:Extend is set to true, no partition is created. An error is logged, and installation is terminated.

Valid Configuration Passes

windowsPE

Parent Hierarchy

Microsoft-Windows-Setup | DiskConfiguration | Disk | CreatePartitions | CreatePartition | Size

Applies To

For a list of supported Windows editions and architectures that this component supports, see Microsoft-Windows-Setup.

XML Example

Setting a Primary Partition to Fill the Available Space on a Drive

The following XML output for the DiskConfiguration setting shows how to create two partitions on a hard drive on a BIOS-based system. The first partition is 300 MB. The second partition extends to fill the remainder of the hard disk. This is shown in the following illustration.

<DiskConfiguration>

  <Disk wcm:action="add">
    <DiskID>0</DiskID> 
    <WillWipeDisk>true</WillWipeDisk> 
    <CreatePartitions>

      <!-- System partition -->
      <CreatePartition wcm:action="add">
        <Order>1</Order> 
        <Type>Primary</Type> 
        <Size>300</Size> 
      </CreatePartition>

      <!-- Windows partition -->
      <CreatePartition wcm:action="add">
        <Order>2</Order> 
        <Type>Primary</Type> 
        <Extend>true</Extend> 
      </CreatePartition>

    </CreatePartitions>
    <ModifyPartitions>

      <!-- System partition -->
      <ModifyPartition wcm:action="add">
        <Order>1</Order> 
        <PartitionID>1</PartitionID> 
        <Label>System</Label> 
        <Format>NTFS</Format> 
        <Active>true</Active> 
      </ModifyPartition>

      <!-- Windows partition -->
      <ModifyPartition wcm:action="add">
        <Order>2</Order> 
        <PartitionID>2</PartitionID> 
        <Label>Windows</Label> 
        <Letter>C</Letter> 
        <Format>NTFS</Format> 
      </ModifyPartition>
    </ModifyPartitions>
  </Disk>


  <WillShowUI>OnError</WillShowUI> 
</DiskConfiguration>


<ImageInstall>
  <OSImage>
    <InstallTo>
      <DiskID>0</DiskID> 
      <PartitionID>2</PartitionID> 
    </InstallTo>
  </OSImage>
</ImageInstall>

Setting a Logical Partition to Fill the Available Space in an Extended Partition

The following XML output for the DiskConfiguration setting shows how to create an extended partition that fills the remainder of the drive on a BIOS-based system. The extended partition includes two logical partitions. The first logical partition is 15 GB. The second logical partition extends to fill the remainder of the extended partition. This is shown in the following illustration.

<DiskConfiguration>

  <Disk wcm:action="add">
    <DiskID>0</DiskID> 
    <WillWipeDisk>true</WillWipeDisk> 
    <CreatePartitions>

      <!-- Recovery partition -->
      <CreatePartition wcm:action="add">
        <Order>1</Order> 
        <Type>Primary</Type> 
        <Size>3000</Size> 
      </CreatePartition>

      <!-- Utility2 partition -->
      <CreatePartition wcm:action="add">
        <Order>2</Order> 
        <Type>Primary</Type> 
        <Size>250</Size> 
      </CreatePartition>

      <!-- System partition -->
      <CreatePartition wcm:action="add">
        <Order>3</Order> 
        <Type>Primary</Type> 
        <Size>100</Size> 
      </CreatePartition>

      <!-- Extended partition -->
      <CreatePartition wcm:action="add">
        <Order>4</Order> 
        <Type>Extended</Type> 
        <Extend>true</Extend> 
      </CreatePartition>

      <!-- Windows partition -->
      <CreatePartition wcm:action="add">
        <Order>5</Order> 
        <Type>Logical</Type> 
        <Size>15000</Size> 
      </CreatePartition>

      <!-- Logical2 partition -->
      <CreatePartition wcm:action="add">
        <Order>6</Order> 
        <Type>Logical</Type> 
        <Size>100</Size> 
          <!-- Note: To create a logical partition that fills 
                     the rest of the extended partition, create the 
                     data partition with an initial size of 100 MB.
                     This will be changed in the ModifyPartition section. -->
      </CreatePartition>

    </CreatePartitions>
    <ModifyPartitions>

      <!-- Recovery partition -->
      <ModifyPartition wcm:action="add">
        <Order>1</Order> 
        <PartitionID>1</PartitionID> 
        <Label>Recovery</Label> 
        <Format>NTFS</Format> 
        <TypeID>0x27</TypeID>
      </ModifyPartition>

      <!-- Utility2 partition -->
      <ModifyPartition wcm:action="add">
        <Order>2</Order> 
        <PartitionID>2</PartitionID> 
        <Label>Utility2</Label> 
        <Letter>U</Letter> 
        <Format>NTFS</Format> 
        <TypeID>0x27</TypeID>
      </ModifyPartition>

      <!-- System partition -->
      <ModifyPartition wcm:action="add">
        <Order>3</Order> 
        <PartitionID>3</PartitionID> 
        <Label>System</Label>
        <Format>NTFS</Format> 
        <Active>true</Active> 
      </ModifyPartition>

      <!-- Extended partition:
           This partition does not need receive a partition number, 
           nor does it need to be modified -->

      <!-- Windows partition -->
      <ModifyPartition wcm:action="add">
        <Order>4</Order>
        <PartitionID>4</PartitionID> 
        <Label>Windows</Label> 
        <Letter>C</Letter> 
        <Format>NTFS</Format> 
      </ModifyPartition>

      <!-- Logical2 partition -->
      <ModifyPartition wcm:action="add">
        <Order>5</Order> 
        <PartitionID>5</PartitionID> 
        <Label>Logical2</Label> 
        <Letter>L</Letter> 
        <Format>NTFS</Format> 
        <Extend>true</Extend>
          <!-- Note: When modifying a logical partition, setting
                     "ModifyPartition|Extend=true" sets the partition to  
                     fill the remainder of the extended partition.
                     This overrides the "CreatePartition|Size" value. -->
      </ModifyPartition>

    </ModifyPartitions>
  </Disk>
  <WillShowUI>OnError</WillShowUI> 
</DiskConfiguration>


<ImageInstall>
  <OSImage>
    <InstallTo>
      <DiskID>0</DiskID> 
      <PartitionID>4</PartitionID> 
    </InstallTo>
  </OSImage>
</ImageInstall>

For full XML examples and recommended partition configurations, see How to Configure UEFI/GPT-Based Hard Disk Partitions or How to Configure BIOS/MBR-Based Hard Disk Partitions.

See Also

Concepts

CreatePartition

Other Resources

How to Configure More than Four Partitions on a BIOS-Based Hard Disk