The ESXi-Customizer tool is UNSUPPORTED as of Aug 21st 2015. Any known or new issues will not be fixed. For more information please read this blog post! You are welcome to use the successor of ESXi-Customizer: The ESXi-Customizer-PS PowerCLI script. ESXi-Customizer is a user-friendly script that automates the process of customizing the ESXi install-ISO with drivers that are not originally included
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