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

Ron Economos w6rz at comcast.net
Thu Nov 16 18:12:38 EST 2017


Make sure you unmount the SD card file system first before using dd.

Ron

On 11/16/2017 02:24 PM, Mann, John - 0662 - MITLL via USRP-users wrote:
> I tried issuing a sync command after the dd command - no help.
>
> I also tried using bmaptool to burn the image.  It still doesn’t work.  And it still took around 10 minutes - no faster than dd.
>
> Both commands finish without any error messages.
>
> The image file's md5 checksum is correct, so the image did not get corrupted during the download.
>
> I have even tried 2 different SD cards.
>
> I'm running out of ideas... should I try a different host computer?  Any way to do this from Windows 7 or Windows 10?
>
> -----Original Message-----
> From: Philip Balister [mailto:philip at balister.org]
> Sent: Thursday, November 16, 2017 4:43 PM
> To: Anon Lister <listeranon at gmail.com>
> Cc: Mann, John - 0662 - MITLL <mannj at ll.mit.edu>; usrp-users <usrp-users at lists.ettus.com>
> Subject: Re: [USRP-users] Problem burning image to SD card for E312
>
> 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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