minikube: not able to start minikube on mac

Hi, I am trying to setup minikube on my mac machine

Below are environment:

nhs-MBP:~ anhtrang$ minikube version
minikube version: v0.26.1
anhs-MBP:~ anhtrang$ echo "";

anhs-MBP:~ anhtrang$ echo "OS:";
OS:
anhs-MBP:~ anhtrang$ cat /etc/os-release
cat: /etc/os-release: No such file or directory
anhs-MBP:~ anhtrang$ echo "";

anhs-MBP:~ anhtrang$ echo "VM driver":
VM driver:
anhs-MBP:~ anhtrang$ grep DriverName ~/.minikube/machines/minikube/config.json
    "DriverName": "virtualbox",
anhs-MBP:~ anhtrang$ echo "";

anhs-MBP:~ anhtrang$ echo "ISO version";
ISO version
anhs-MBP:~ anhtrang$ grep -i ISO ~/.minikube/machines/minikube/config.json
        "Boot2DockerURL": "file:///Users/anhtrang/.minikube/cache/iso/minikube-v0.26.0.iso",

Got following error:

nhs-MBP:~ anhtrang$ Starting local Kubernetes v1.10.0 cluster...
-bash: Starting: command not found
anhs-MBP:~ anhtrang$ Starting VM...
-bash: Starting: command not found
anhs-MBP:~ anhtrang$ E0420 08:24:57.963653   81977 start.go:159] Error starting host: Temporary Error: Error configuring auth on host: OS type not recognized.

Please advise