Dear all, I was trying to update the SD card with latest version of file system for my E310, I tried both "fdisk" and GParted to format the SD card and loaded the file system image (around 7.5GB) onto the SD card. However, when plugged the SD card into my E310 and type "boot", the error message shows like: Loading fpga image from SD to HW... bad MBR sector signature 0x0f00 ** Invalid partition 1 ** Seems that I have something wrong with my SD card partition. Does anyone could help me with it? Many thanks! Best, Mingda

On 01/25/2016 02:37 PM, Mingda via USRP-users wrote: > Dear all, > > I was trying to update the SD card with latest version of file system > for my E310, I tried both "fdisk" and GParted to format the SD card > and loaded the file system image (around 7.5GB) onto the SD card. > > However, when plugged the SD card into my E310 and type "boot", the > error message shows like: > > Loading fpga image from SD to HW... > bad MBR sector signature 0x0f00 > ** Invalid partition 1 ** > > Seems that I have something wrong with my SD card partition. > Does anyone could help me with it? > Many thanks! > > Best, > Mingda > > _ The images from here: http://files.ettus.com/e3xx_images/e3xx-release-4/ettus-e3xx-sg1/ Are "direct", in that they already have partition tables, and all the associated SD-card *image* goop on them. You should be able to unzip the image, then use 'dd' to copy the image onto the raw sd-card device on your host system--let's say that's /dev/sdb (just as an example--probably different on your system!!!): dd if=<theuncompressedimagefile> of=/dev/sdb bs=1M Then boot from the resulting image. There are faster ways, but I find this to be most reliable.

Hello Mingda: There is some documentation about this at the links below. http://files.ettus.com/manual/page_usrp_e3x0.html#e3x0_upgrade_sd_card https://gnuradio.org/redmine/projects/gnuradio/wiki/Copy_an_image_file_to_the_SD_card --Neel On 25 January 2016 at 11:45, Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wrote: > On 01/25/2016 02:37 PM, Mingda via USRP-users wrote: > >> Dear all, >> >> I was trying to update the SD card with latest version of file system for >> my E310, I tried both "fdisk" and GParted to format the SD card and loaded >> the file system image (around 7.5GB) onto the SD card. >> >> However, when plugged the SD card into my E310 and type "boot", the error >> message shows like: >> >> Loading fpga image from SD to HW... >> bad MBR sector signature 0x0f00 >> ** Invalid partition 1 ** >> >> Seems that I have something wrong with my SD card partition. >> Does anyone could help me with it? >> Many thanks! >> >> Best, >> Mingda >> >> _ >> > > The images from here: > > http://files.ettus.com/e3xx_images/e3xx-release-4/ettus-e3xx-sg1/ > > Are "direct", in that they already have partition tables, and all the > associated SD-card *image* goop on them. > > You should be able to unzip the image, then use 'dd' to copy the image > onto the raw sd-card device on your host system--let's say that's > /dev/sdb (just as an example--probably different on your system!!!): > > dd if=<theuncompressedimagefile> of=/dev/sdb bs=1M > > Then boot from the resulting image. > > There are faster ways, but I find this to be most reliable. > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >

Thanks you folks! I finally found it was a problem of swap operation. I firstly did 'dd' command but found the problem there and then tried fdisk command, however there is another swap operation required to modify the partition then 'dd'. Thank you soooooo much for big helps! Best, Mingda Sent from my iPhone On Jan 25, 2016, at 3:20 PM, Neel Pandeya <neel.pandeya@ettus.com<mailto:neel.pandeya@ettus.com>> wrote: Hello Mingda: There is some documentation about this at the links below. http://files.ettus.com/manual/page_usrp_e3x0.html#e3x0_upgrade_sd_card https://gnuradio.org/redmine/projects/gnuradio/wiki/Copy_an_image_file_to_the_SD_card --Neel On 25 January 2016 at 11:45, Marcus D. Leech via USRP-users <usrp-users@lists.ettus.com<mailto:usrp-users@lists.ettus.com>> wrote: On 01/25/2016 02:37 PM, Mingda via USRP-users wrote: Dear all, I was trying to update the SD card with latest version of file system for my E310, I tried both "fdisk" and GParted to format the SD card and loaded the file system image (around 7.5GB) onto the SD card. However, when plugged the SD card into my E310 and type "boot", the error message shows like: Loading fpga image from SD to HW... bad MBR sector signature 0x0f00 ** Invalid partition 1 ** Seems that I have something wrong with my SD card partition. Does anyone could help me with it? Many thanks! Best, Mingda _ The images from here: http://files.ettus.com/e3xx_images/e3xx-release-4/ettus-e3xx-sg1/ Are "direct", in that they already have partition tables, and all the associated SD-card *image* goop on them. You should be able to unzip the image, then use 'dd' to copy the image onto the raw sd-card device on your host system--let's say that's /dev/sdb (just as an example--probably different on your system!!!): dd if=<theuncompressedimagefile> of=/dev/sdb bs=1M Then boot from the resulting image. There are faster ways, but I find this to be most reliable. _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com<mailto:USRP-users@lists.ettus.com> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com