[USRP-users] Problem burning image to SD card for E312

Philip Balister philip at balister.org
Thu Nov 16 16:42:40 EST 2017


On 11/16/2017 04:37 PM, Anon Lister wrote:
> Make sure to run sync after to dd.

Interesting, I thought dd would run below the buffer cache layer.

> 
> Also curious as to reason for the recommendation against dd?
> 

bmaptool is faster. bmaptool also checks to see if the device has a
mounted file system, so prevent you form overwriting something like
/dev/sda. Basically, safer and faster.

Philip


> On Nov 16, 2017 12:35 PM, "Philip Balister via USRP-users" <
> usrp-users at lists.ettus.com> wrote:
> 
>> Try bmaptool. dd is a bad idea, yeah I killed my hard drive once.
>>
>> https://wiki.gnuradio.org/index.php/Copy_an_image_file_to_the_SD_card
>>
>> The might even be package with Ubuntu. After writing, re-insert the card
>> in the writer and see if it mounts the partitions.
>>
>> Philip
>>
>> On 11/16/2017 10:54 AM, Mann, John - 0662 - MITLL via USRP-users wrote:
>>> Running Ubuntu 16 on my host computer...
>>>
>>> I downloaded the image from:
>>>
>>> http://files.ettus.com/e3xx_images/e3xx-release-4/ettus-
>> e3xx-sg3/http://files.ettus.com/e3xx_images/e3xx-release-
>> 4/ettus-e3xx-sg3/sdimage-gnuradio-dev.direct.xz
>>>
>>> Then I decompressed the xz file using xzdec:
>>>
>>> xzdec sdimage-gnuradio-dev.direct.xz >> sdimage-gnuradio-dev.direct
>>>
>>> And burned the sd image using the dd command:
>>>
>>> sudo dd if=sdimage-gnuradio-dev.direct of=/dev/sdb1 bs=1M
>>>
>>> The dd command apparently finishes without error after about 10 minutes,
>> and I can see flashing lights on the SD card USB adapter, so I'm pretty
>> sure it is getting written to the correct place.
>>>
>>> But the card does not work in the E312.  When I turn it on, the 4 LEDs
>> next to the Tx/Rx ports light up, but there is no activity on the console
>> window.  I have another SD card that boots up fine, so I know the E312 is
>> fine.  There is clearly something wrong with the SD card.  When I plug the
>> old working card into my Ubuntu host machine, I can actually see the files
>> on the card.  When I plug the newly burned card back into the Ubuntu
>> machine, I see nothing.
>>>
>>> Any idea what I am doing wrong?
>>>
>>> John Mann
>>> MIT Lincoln Laboratory
>>>
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>>
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> 




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