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version 1.6, 2017/04/02 02:16:09 version 1.7, 2017/04/06 05:37:39
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 <p>  <p>
 The Raspberry Pi 3 requires closed but redistributable files on the  The Raspberry Pi 3 requires closed but redistributable files on the
 system disk to load into the VC4 GPU which starts the ARM cores.  system disk to load into the VC4 GPU which starts the ARM cores.
 The boot ROM will only try to load these files off an SD card unless a  By default the boot ROM will only try to load these files off an SD card.
 special config.txt value is set to irreversibly enable USB boot mode.  
 These files are present in the install media but there is no driver  These files are present in the install media but there is no driver
 for SD/MMC yet so a USB disk drive and manual steps are required.  for SD/MMC yet so a USB disk drive and manual steps are required.
   To load the firmware off the SD card and have the root disk on USB
   after installing OpenBSD reboot and interrupt U-Boot before the timeout
   expires and instruct U-Boot to prefer USB over the SD card:
 </p>  </p>
   
   <blockquote><pre>
   Hit any key to stop autoboot:  0
   U-Boot&gt; setenv boot_targets usb0 mmc0 pxe dhcp
   U-Boot&gt; saveenv
   U-Boot&gt; boot
   </pre></blockquote>
   
 <p>  <p>
 Opteron A1100 machines on the other hand come with a UEFI firmware  Opteron A1100 machines on the other hand come with a UEFI firmware
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