Windows Custom ISO / WIM Sizer
Estimate the final .iso size for a custom Windows install image.
Compressed .wim
10.00 GB
Final ISO size
10.78 GB
Fits on DVD
No — needs USB
Fits on dual-layer DVD
No — needs USB
About this tool
Apply DISM compression (fast / max / recovery) to a source install.wim and add UEFI + boot overhead. Targets r/sysadmin 'Custom Windows ISO install failed on 11% for custom install.wim'.
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