Creating EFI Partition for Windows: Examples in PowerShell and Batch Scripts

Introduction

In this article, we will explore the process of creating an EFI (Extensible Firmware Interface) partition for Windows operating systems. The EFI partition plays a crucial role in the boot process, as it contains the necessary files for the system to start up. Understanding how to create and manage the EFI partition is essential for system administrators and engineers working with Windows.

Examples:

1. Creating an EFI Partition using PowerShell:

   • Open PowerShell with administrative privileges.
   • Run the following command to list all the disks:

     Get-Disk

   • Identify the disk number on which you want to create the EFI partition.
   • Run the following command to select the disk:

     $disk = Get-Disk -Number <disk number>

   • Create a new partition using the selected disk:

     New-Partition -DiskNumber $disk.Number -UseMaximumSize -IsActive -AssignDriveLetter

   • Format the partition as FAT32:

     Format-Volume -Partition $disk.Partitions[0].PartitionNumber -FileSystem FAT32 -NewFileSystemLabel "EFI"

2. Creating an EFI Partition using Batch Script:

   • Open Command Prompt with administrative privileges.
   • Run the following command to list all the disks:

     diskpart
     list disk

   • Identify the disk number on which you want to create the EFI partition.
   • Run the following commands to select the disk, create a new partition, and format it as FAT32:

     select disk <disk number>
     clean
     convert gpt
     create partition efi size=100
     format quick fs=fat32 label="EFI"
     assign letter=S