Yay! I have Linux running on my Jornada 720!
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This is great since it's the best PDA around for flexibility as a mobile administrator's tool.
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I used the directions from this link:
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<a href="http://homepage1.nifty.com/kyou-kyou/jornada/en/howto_install001.html">http://homepage1.nifty.com/kyou-kyou/jornada/en/howto_install001.html</a>
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I used my Vaio PCG-GRT170 laptop and a Kingston 128MB flash card.
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I have a 512MB card on the way so that I can add a lot more software.
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A couple of gotchas I discovered....

include so far:
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<li>So, it boots up to X with a background of a photo of the landscape of Mars. But now windows or menu items.</li>
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<li>By posting to the Jornada Linux mailing list, I was informed to give the following keystrokes to bring up an XTERM window:
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ALT+SHIFT+X</li>
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<li>The command line environment seems to have a screwed up keymap, because many keys don't come out right. I think this may be defaulting to German or some other, I'm delving into the corrections</li>
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<li>So far there is no PM (power Management) this means I can cleanly turn off the device, I have to pull both batteries, but there is a PM kernel in the works.</li>
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Luckily this appears to be a living project, so there's hope that it will get better and better. I will be testing the built-in modem, infrared, serial/usb port, sound playback and recod options, and networking and wireless
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