When ordering, clients can select a operating system which will be automatically installed.
To configure the client selectable operating systems, open the module page (Addons → NOC-PS For WHMCS), navigate to Settings and click Import or Update NOC-PS Operating Systems into configurable option group.
A new configurable option group will be created. Assign this group to your server products.
Setting: No Operating System
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You can add the option "None" for no automated OS installation. That makes sense when clients want to install the OS over KVM.
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