new-machine-cymru: boot from virtual media

howto/new-machine-cymru.md

@@ -461,6 +461,47 @@ VirtualBox, which isn't in Debian ([anymore](https://bugs.debian.org/cgi-bin/bug
 Note that in my experience, the window starts off being minuscule. Hit
 the "maximize" button (a square icon) to make it bigger.
 
+#### Boot from virtual media
+
+Using the Java applet it's possible to boot the machine using an ISO
+or floppy image. This is useful for example when attempting to boot
+the Memtest86 program, when the usual Memtest86+ crashes or is unable
+to complete tests.
+
+The first step here is to compile and install this hack which allows
+us to use arrow keys (yes, arrow keys) to navigate the F11 boot menu:
+
+https://github.com/anchor/idrac-kvm-keyboard-fix
+
+The steps are:
+
+ 1. First install some dependencies:
+
+        sudo apt-get install build-essential git libx11-dev
+
+ 2. Clone the repository:
+
+        cd ~
+        git clone https://github.com/anchor/idrac-kvm-keyboard-fix.git
+        cd idrac-kvm-keyboard-fix
+
+ 3. Review the contents of the repository.
+
+ 4. Compile and install:
+
+        make
+        PATH="${PATH}:${HOME}/bin" make install
+
+ 5. In Firefox, open `about:preferences#applications`
+
+ 6. Next to "JNLP File" click the dropdown menu and select "Use other..."
+
+ 7. Select the executable at `~/bin/javaws-idrac`
+
+ 8. Close and launch the Virtual Console again
+
+TODO: Mapping a virtual drive in the Virtual Console.
+
 ### Virtual machine basics
 
 TODO: move this section (and the libvirt stuff above) to another page,