How to reinstall a CentOS 7 from an ISO from the command line inside a VM ?

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    Normally (as blametheadmin answered) you'd boot the VM from the ISO. Are you asking for some other way? – derobert Jan 18 '17 at 16:13

You can't reinstall the CentOS OS from a shell prompt inside the OS itself. You need to reboot the VM from the ISO and then select the Install option just like you were doing a first install.

  • Thanks, I don't know why this was negative. This is not new users friendly. – UberM Jan 18 '17 at 16:29

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