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<sect2 arch="sparc" id="boot-tftp"><title>Booting with TFTP</title>
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&boot-installer-intro-net.xml;
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<para>
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On machines with OpenBoot, simply enter the boot monitor on the
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machine which is being installed (see
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<xref linkend="invoking-openboot"/>).
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Use the command <userinput>boot net</userinput> to boot from a TFTP
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and RARP server, or try <userinput>boot net:bootp</userinput> or
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<userinput>boot net:dhcp</userinput> to boot from a TFTP and BOOTP
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or DHCP server. Some older OpenBoot revisions require using
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the device name, such as <userinput>boot le()</userinput>; these
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probably don't support BOOTP nor DHCP.
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</para>
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</sect2>
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<sect2 arch="sparc"><title>Booting from a CD-ROM</title>
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&boot-installer-intro-cd.xml;
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<para>
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Most OpenBoot versions support the <userinput>boot cdrom</userinput>
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command which is simply an alias to boot from the SCSI device on ID 6
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(or the secondary master for IDE based systems). You may have to use
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the actual device name for older OpenBoot versions that don't support
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this special command. Note that some problems have been reported on Sun4m
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(e.g., Sparc 10s and Sparc 20s) systems booting from CD-ROM.
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</para>
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</sect2>
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<sect2 arch="sparc" condition="supports-floppy-boot">
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<title>Booting from Floppies</title>
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<para>
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To boot from floppy on a Sparc, use
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<informalexample><screen>
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Stop-A -> OpenBoot: "boot floppy"
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</screen></informalexample>
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Be warned that the newer Sun4u (ultra) architecture does not support
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floppy booting. A typical error message is <computeroutput>Bad magic
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number in disk label - Can't open disk label package</computeroutput>.
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Furthermore, a number of Sun4c models (such as the IPX) do not support
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the compressed images found on the disks, so also are not supported.
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</para><para>
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Several Sparcs (e.g. Ultra 10) have an OBP bug that prevents them from
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booting (instead of not supporting booting at all). The appropriate
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OBP update can be downloaded as product ID 106121 from
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<ulink url="http://sunsolve.sun.com"></ulink>.
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</para><para>
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If you are booting from the floppy, and you see messages such as
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<informalexample><screen>
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Fatal error: Cannot read partition
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Illegal or malformed device name
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</screen></informalexample>
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then it is possible that floppy booting is simply not supported on
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your machine.
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</para>
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</sect2>
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<sect2 arch="sparc"><title>IDPROM Messages</title>
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<para>
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If you cannot boot because you get messages about a problem with
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``IDPROM'', then it's possible that your NVRAM battery, which holds
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configuration information for you firmware, has run out. See the
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<ulink url="&url-sun-nvram-faq;">Sun NVRAM FAQ</ulink> for more
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information.
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</para>
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</sect2>
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