Windows Imaging Format
File format
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The Windows Imaging Format is a file-based disk image format. It was developed by Microsoft to help deploy Windows Vista and subsequent versions of the Windows operating system family, as well as Windows Fundamentals for Legacy PCs. Wikipedia
Developed by: Microsoft
Filename extension: wim,.swm,.esd
Magic number: MSWIM\0\0\0 / WLPWM\0\0\0 for wimlib pipable variant