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<body class='hmmessage'><div dir='ltr'><font style="" color="#000000" face="Tahoma,sans-serif">Robert,<br><br> All that info is on the hamvoip site in howto's but I will repeat some highlights here.<br><br>To copy an image to an SD card you insert the card into a reader/writer (usually a USB FOB)<br><br>In Ubuntu it should mount the device. Do a 'df' at the Linux prompt to see how it is mounted. In my case on my Ubuntu laptop the main hard drive is /dev/sda1 and the SD card comes up a /dev/sdb<br><br>In any case make absolutely sure you have the right device. dd is NOT forgiving and will just a happily write to your hard drive or another device.<br><br>The assuming you are in the directory where the image resides you do the following:<br><br>dd if=nameofimage.img of=/dev/sdb<br><br>Of course you replace the filename and output device with your values.<br><br>To make an image from the SD card you would do the following:<br><br>dd if=/dev/sdb bs=1024 count=3900000 of=nameofimage.img<br><br>Again use your values.<br><br>Also be aware that the 1.2.1 code has a very nice backup system built-in Read the backup howto on the web page.<br><br>Also BBB related questions should be asked on the arm-allstar list. You can join the list from a link on the hamvoip.org web page.<br id="FontBreak"></font><br><b><font style="font-size:16pt;" size="4">73 Doug</font><font style="font-size:16pt;" size="4"><br></font><font style="font-size:16pt;" size="4">WA3DSP</font><font style="font-size:16pt;" size="4"><br></font><font style="font-size:16pt;" size="4">http://www.crompton.com/hamradio</font></b><font style="font-size:16pt;" size="4"><br></font><br><br><div>> Date: Wed, 14 Jan 2015 21:48:44 -0500<br>> From: N1XBM@amsat.org<br>> To: app_rpt-users@ohnosec.org<br>> Subject: [App_rpt-users] Need help DD command<br>> <br>> I recently set-up a BBB. When getting the image from www.hamvoip.net I <br>> tried use my new installation of Ubuntu 14.04, mostly because I am <br>> trying to learn Linux by just using it. I didn’t have any luck and just <br>> to keep the project moving I resorted back to windows to complete the <br>> image copy.<br>> <br>> I would like to learn how to copy a .img file to a micro sd card using <br>> DD. I would also like to know how to do the reverse of taking a micro sd <br>> card and making a .img file for backup.<br>> <br>> Is there anyone on the list willing to help me with this?<br>> <br>> Thank you<br>> <br>> Bob/N1XBM<br>> _______________________________________________<br>> App_rpt-users mailing list<br>> App_rpt-users@ohnosec.org<br>> http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users<br>> <br>> To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"<br>> You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem. <br></div> </div></body>
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