New Partition - PowerShell


The New-Partition cmdlet creates new partitions on an existing disk in the system. Partitions are logical divisions within a physical disk that can be formatted with a file system and used to store data. This cmdlet is useful for managing disk space, creating multiple volumes on a single disk, and organizing data effectively.


New-Partition -DiskNumber <Int32> -Size <UInt32> [-DriveLetter <Char>]
            [-Force] [-FileSystem "NTFS" | "FAT32" | "exFAT" | "XFS" | " ext2" | "ext3" | "ext4" | "linux-swap" | "HFS+" | "ReFS" | "REFS3" | "Resilient File System"]
            [-Gpt] [-Label <String>] [-NewFileSystem] [-Offset <UInt32>] [-PartitionStyle]
            [-WriteReserved <UInt32>]


| Option/Flag | Description |
| -DiskNumber | Specifies the disk number to create the partition on. |
| -Size | Specifies the size of the partition in megabytes (MB). |
| -DriveLetter | Assigns a drive letter to the newly created partition. |
| -Force | Forces the creation of the partition even if it results in data loss. Use with caution. |
| -FileSystem | Sets the file system type for the partition. NTFS is the default. |
| -Gpt | Creates a GUID Partition Table (GPT) partition. MBR is used by default. |
| -Label | Assigns a label to the partition for identification. |
| -NewFileSystem | Formats the partition with the specified file system after creation. |
| -Offset | Sets the offset of the partition from the beginning of the disk in MB. |
| -PartitionStyle | Specifies the partition style. Options are MBR or GPT. |
| -WriteReserved | Reserves a specified amount of space in the partition in KB for system use. |


Example 1: Create a 100 MB partition on Disk 0

New-Partition -DiskNumber 0 -Size 100

Example 2: Create a 500 MB partition with the drive letter “E:” on Disk 1 and format it with NTFS

New-Partition -DiskNumber 1 -Size 500 -DriveLetter "E" -FileSystem NTFS -NewFileSystem

Example 3: Create a 100 GB GPT partition with the label “Data” on Disk 2

New-Partition -DiskNumber 2 -Size 100000 -Gpt -Label "Data"

Common Issues

  • Insufficient disk space: Ensure that there is enough free space on the selected disk to accommodate the new partition.
  • Partition size too large: The partition size cannot exceed the available space on the disk.
  • Invalid file system specified: The specified file system must be supported by the operating system.
  • Drive letter collision: The specified drive letter may be already assigned to another volume. Choose a unique letter.


The New-Partition cmdlet can be combined with other commands to manage partitions and storage. For example:

  • Get-Partition: Retrieve information about existing partitions.
  • Format-Volume: Formats the newly created partition with a file system.
  • Mount-Volume: Assigns a mount point to the partition and makes it accessible.
  • Format-Volume
  • Get-Partition
  • Mount-Volume
  • Resize-Partition
  • Set-Partition