ESD Installer
Install Windows directly to a disk partition without USB media
ESD Installer is a native, open-source Windows deployment utility that applies a Windows image directly to a selected existing disk partition, configures boot files, verifies the result, and prepares the computer to boot into the new system without a separate installation USB drive. Three native editions are provided: Windows 10/11 (C#, .NET 8, WinUI 3), Windows 8/8.1 (C#, .NET Framework 4.6.1, WPF), and Windows 7 SP1 (C#, .NET Framework 4.8, WPF). ESD Installer supports ISO/WIM/ESD inspection, real disk and partition enumeration, UEFI/GPT and BIOS/MBR validation, 42 localized application and installer languages, detailed logs, and safety-first immutable planning. ...