This guide documents the process for migrating a Helix Core (P4D) service from a Windows server machine to Linux. It outlines the necessary steps to ensure a minimally disruptive transition for users through careful planning and execution. The migration process is designed to be nearly seamless, allowing P4D on Linux to operate in a case-insensitive mode similar to that of Windows. Key components of the migration include planning, provisioning new Linux server machines, installing Perforce Helix on Linux, and defining necessary adjustments to configurations. The guide emphasizes the importance of a dry run of the cutover to identify and rectify any data issues before the final transition. It also discusses the handling of custom triggers and extensions that may complicate the migration process. Overall, the document serves as a comprehensive resource for administrators tasked with executing a successful migration from Windows to Linux.