Hello everyone. Need some help remembering how Apple does things.. I would like to do the following... 1.) Download a copy of macOS Sierra from Apple. 2.) Store that copy locally on my MBP for future use. 3.) Create a bootable installer, so if my computer ever dies, I can easily re-install macOS Sierra I have always found how Apple does their OS's to be very confusing, and I know over the years it have changed even more so. I miss the days when you had your OS on DVD and had that piece of mind that you always had a way to start over. Can someone help me accomplsih the above? Thanks.