[Installation] NVMe Drive as Boot Drive

A node can have Non-Volatile Memory Express (NVMe) drive as its
boot drive by:

- Enabling UEFI mode.
- Modifying Kernel boot parameters.

Story: 2004780
Task: 28922

Change-Id: I1e0a2e841b94226bc9ea578765b968986d25bb8d
Co-authored-by: Don Penney <don.penney@windriver.com>
Signed-off-by: Abraham Arce <abraham.arce.moreno@intel.com>

doc/source/installation_guide/index.rst

@@ -113,6 +113,30 @@ be deployed, include:
 The recommended minimum requirements for the physical servers are
 described later in each StarlingX Deployment Options guide.
 
+^^^^^^^^^^^^^^^^^^^^^^^^
+NVMe Drive as Boot Drive
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+To use a Non-Volatile Memory Express (NVMe) drive as the boot drive for any of
+your nodes, you must configure your host and adjust kernel parameters during
+installation:
+
+- Configure the host to be in UEFI mode.
+- Edit the kernel boot parameter. After you are presented with the StarlingX
+  ISO boot options and after you have selected the preferred installation option
+  (e.g. Standard Configuration / All-in-One Controller Configuration), press the
+  TAB key to edit the Kernel boot parameters. Modify the **boot_device** and
+  **rootfs_device** from the default **sda** so that it is the correct device
+  name for the NVMe drive (e.g. "nvme0n1").
+
+  ::
+
+     vmlinuz rootwait console=tty0 inst.text inst.stage2=hd:LABEL=oe_iso_boot
+     inst.ks=hd:LABEL=oe_iso_boot:/smallsystem_ks.cfg boot_device=nvme0n1
+     rootfs_device=nvme0n1 biosdevname=0 usbcore.autosuspend=-1 inst.gpt
+     security_profile=standard user_namespace.enable=1 initrd=initrd.img
+
+
 *******************
 Virtual Environment
 *******************