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WinDiskWriter is a macOS utility that creates bootable USB Windows installers, compatible with PCs, Intel Macs, and some virtual machines, and supports both UEFI and Legacy BIOS boot modes. It can patch Windows 11 installers to bypass TPM, RAM, and Secure Boot requirements, add EFI support for Windows Vista and 7, and automatically split large installer images (>4GB) for FAT32 compatibility. The result is a universal USB drive that lets you install Windows across a wide range of hardware configurations.
AI named WinDiskWriter in March 2026.