From ec87a0ae603a284b6f7df998d4873ffe161ae49d Mon Sep 17 00:00:00 2001
From: Hawley Waldman <hawleyw@gmail.com>
Date: Tue, 10 Oct 2017 16:58:51 -0400
Subject: [PATCH] update info for older mac users in install.md (#4850)

---
 docker-for-mac/install.md | 40 ++++++++++++++++++++-------------------
 1 file changed, 21 insertions(+), 19 deletions(-)

diff --git a/docker-for-mac/install.md b/docker-for-mac/install.md
index 3aec63c2ff..ac953a9435 100644
--- a/docker-for-mac/install.md
+++ b/docker-for-mac/install.md
@@ -81,12 +81,13 @@ explanation and list of prerequisites.
 
 ##  What to know before you install
 
-* **README FIRST for Docker Toolbox and Docker Machine users**: If you are
-  already running Docker on your machine, first read
-  [Docker for Mac vs. Docker Toolbox](docker-toolbox.md) to understand the
-  impact of this installation on your existing setup, how to set your environment
-  for Docker for Mac, and how the two products can coexist.
-<p />
+> README FIRST for Docker Toolbox and Docker Machine users
+>
+>If you are already running Docker on your machine, first read
+[Docker for Mac vs. Docker Toolbox](docker-toolbox.md) to understand the
+impact of this installation on your existing setup, how to set your environment
+for Docker for Mac, and how the two products can coexist.
+
 * **Relationship to Docker Machine**: Installing Docker for Mac does not affect
   machines you created with Docker Machine. You'll get the option to copy
   containers and images from your local `default` machine (if one exists) to the
@@ -96,26 +97,27 @@ explanation and list of prerequisites.
   virtualization system running (HyperKit) which takes the place of the
   VirtualBox system. To learn more, see
   [Docker for Mac vs. Docker Toolbox](docker-toolbox.md).
-<p />
+
 * **System Requirements**: Docker for Mac will launch only if all of these
   requirements are met.
-  <p />
-  - Mac must be a 2010 or newer model, with Intel's hardware support for memory
+  
+  - Mac hardware must be a 2010 or newer model, with Intel's hardware support for memory
     management unit (MMU) virtualization; i.e., Extended Page Tables (EPT) and
-    Unrestricted Mode.
-  <p />
-  - OS X El Capitan 10.11 and newer macOS releases are supported. At a minimum,
+    Unrestricted Mode. You can check to see if your machine has this support by
+    running the following command  in a terminal: `sysctl kern.hv_support`
+
+  - macOS El Capitan 10.11 and newer macOS releases are supported. At a minimum,
     Docker for Mac requires macOS Yosemite 10.10.3 or newer, with the caveat
     that going forward 10.10.x is a use-at-your-own risk proposition.
-  <p />
-  - Starting with Docker for Mac Stable release 1.13 (upcoming), and concurrent
-    Edge releases, we will no longer address issues specific to OS X Yosemite
-    10.10. In future releases, Docker for Mac could stop working on OS X Yosemite
-    10.10 due to the deprecated status of this OS X version. We recommend
+
+  - Starting with Docker for Mac Stable release 1.13, and concurrent
+    Edge releases, we will no longer address issues specific to macOS Yosemite
+    10.10. In future releases, Docker for Mac could stop working on macOS Yosemite
+    10.10 due to the deprecated status of this macOS version. We recommend
     upgrading to the latest version of macOS.
-  <p />
+
   - At least 4GB of RAM
-  <p />
+
   - VirtualBox prior to version 4.3.30 must NOT be installed (it is incompatible
     with Docker for Mac). If you have a newer version of VirtualBox installed, it's fine.