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+<!-- retain these comments for translator revision tracking -->
+<!-- $Id$ -->
+
+
+  <sect2 arch="sparc" id="invoking-openboot"><title>Invoking OpenBoot</title>
+
+<para>
+
+OpenBoot provides the basic functions needed to boot the &arch-title;
+architecture.  This is rather similar in function to the BIOS in the
+x86 architecture, although much nicer.  The Sun boot PROMs have a
+built-in forth interpreter which lets you do quite a number of things
+with your machine, such as diagnostics, simple scripts, etc.
+
+</para><para>
+
+To get to the boot prompt you need to hold down the
+<keycap>Stop</keycap> key (on older type 4 keyboards, use the
+<keycap>L1</keycap> key, if you have a PC keyboard adapter, use
+the <keycap>Break</keycap> key) and press the
+<keycap>A</keycap> key. The boot PROM will give you a prompt,
+either <userinput>ok</userinput> or <userinput>&gt;</userinput>. It is
+preferred to have the <userinput>ok</userinput> prompt. So if you get
+the old style prompt, hit the <keycap>n</keycap> key to get the new
+style prompt.
+
+</para><para>
+
+If you are using a serial console, send a break to the machine. With Minicom,
+use <keycap>Ctrl-A F</keycap>, with cu, hit <keycap>Enter</keycap>, then type
+<userinput>%~break</userinput>. Consult the documentation of your terminal
+emulator if you are using a different program.
+
+</para>
+  </sect2>
+
+  <sect2 arch="sparc" id="boot-dev-select-sun">
+  <title>Boot Device Selection</title>
+
+<para>
+
+You can use OpenBoot to boot from specific devices, and also to change
+your default boot device.  However, you need to know some details
+about how OpenBoot names devices; it's much different from Linux
+device naming, described in <xref linkend="device-names"/>.
+Also, the command will vary a bit, depending on what version of
+OpenBoot you have.  More information about OpenBoot can be found in
+the <ulink url="&url-openboot;">Sun OpenBoot Reference</ulink>.
+
+</para><para>
+
+Typically, with newer revisions, you can use OpenBoot device such as
+<quote>floppy</quote>, <quote>cdrom</quote>, <quote>net</quote>,
+<quote>disk</quote>, or <quote>disk2</quote>.  These have the obvious
+meanings; the <quote>net</quote> device is for booting from the network.
+Additionally, the device name can specify a particular partition of a disk,
+such as <quote>disk2:a</quote> to boot disk2, first partition.  Full
+OpenBoot device names have the form
+
+<informalexample>
+<screen>
+<replaceable>driver-name</replaceable>@
+<replaceable>unit-address</replaceable>:
+<replaceable>device-arguments</replaceable>
+</screen></informalexample>.
+
+In older revisions of OpenBoot, device naming is a bit different: the
+floppy device is called <quote>/fd</quote>, and SCSI disk devices are of
+the form <quote>sd(<replaceable>controller</replaceable>,
+<replaceable>disk-target-id</replaceable>,
+<replaceable>disk-lun</replaceable>)</quote>.  The command
+<userinput>show-devs</userinput> in newer OpenBoot revisions is useful
+for viewing the currently configured devices.  For full information,
+whatever your revision, see the
+<ulink url="&url-openboot;">Sun OpenBoot Reference</ulink>.
+
+</para><para>
+
+To boot from a specific device, use the command <userinput>boot
+<replaceable>device</replaceable></userinput>.  You can set this
+behavior as the default using the <userinput>setenv</userinput>
+command.  However, the name of the variable to set changed between
+OpenBoot revisions.  In OpenBoot 1.x, use the command
+<userinput>setenv boot-from
+<replaceable>device</replaceable></userinput>.  In later revisions of
+OpenBoot, use the command <userinput>setenv boot-device
+<replaceable>device</replaceable></userinput>. Note, this is also
+configurable using the <command>eeprom</command> command on Solaris,
+or modifying the appropriate files in
+<filename>/proc/openprom/options/</filename>, for example under Linux:
+
+<informalexample><screen>
+# echo disk1:1 &gt; /proc/openprom/options/boot-device
+</screen></informalexample>
+
+and under Solaris:
+
+<informalexample><screen>
+eeprom boot-device=disk1:1
+</screen></informalexample>
+
+</para>
+  </sect2>