Minikube: Cleanup everything to start new machine

Author: iamneha

content/en/docs/tasks/tools/install-minikube.md

@@ -111,4 +111,9 @@ To install Minikube manually on windows using [Windows Installer](https://docs.m
 
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+## Cleanup everything to start fresh
+If you have installed minikube before and when running `minikube start` is throwing error `machine does not exist` then simply wipe existing configuration files.
 
+```shell
+rm -rf ~/.minikube
+```