Minikube: Cleanup everything to start new machine (#12749)

* Minikube: Cleanup everything to start new machine

* Quick fixes

Author: iamneha

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

@@ -114,4 +114,19 @@ To install Minikube manually on windows using [Windows Installer](https://docs.m
 
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+## Cleanup everything to start fresh
 
+If you have previously installed minikube, and run:
+```shell
+minikube start
+```
+
+And this command returns an error:
+```shell
+machine does not exist
+```
+
+You need to wipe the configuration files:
+```shell
+rm -rf ~/.minikube
+```