Nick, I can't remember if I tried this with the latest Angstrom version (09.04), but the mmcblk1 should represent the eMMC if you booted off of a SD card (typically the boot device is mmcblk0). Also to state the obvious, you do need to be root in order to dd from the device. -Dale ps. I think that generally opinion on other posts was that this wasn't probably the preferred way to backup, but I don't recall what was advised. Definitely backing up a partition being actively used is risky, in other words, ensure the device/disk being backed up is unmounted.
On Saturday, November 16, 2013 10:11:34 PM UTC-6, [email protected] wrote: > > The steps below result in a *permission denied* error with accessing the > device file (/dev/mmcblk1). Does the device file represent the eMMC? > > > On Saturday, 7 September 2013 09:12:56 UTC+12, Dale Schaafsma wrote: >> >> Gerald, >> I can confirm that this works...note that I didn't test by going back to >> the eMMC but that could be done by copying the backup image to a bootable >> SD card and dd'ing it to the eMMC. >> >> This is my process: >> 1 - to backup (on BBB...takes about 10min): >> >> boot via SD card >> >> dd if=/dev/mmcblk1 bs=1M | ssh user@ip 'dd of=/home/user/backup.img bs=1M' >> >> 2 - to restore to a SD card (on Linux laptop...takes about 10-20min) >> >> dd if=/home/user/backup.img of=/dev/<sdcard device> bs=1M >> >> >> Also note that you can save just one partition and then it can be mounted >> on a Linux machine...for example: >> 1 - on BBB >> >> boot via SD card >> >> dd if=/dev/mmcblk1p2 bs=1M | ssh user@ip 'dd of=/home/user/backup.img >> bs=1M' >> >> 2 - on Linux machine >> >> sudo mount backup.img /mnt >> >> >> >> -Dale >> >> >> On Wednesday, September 4, 2013 1:41:51 PM UTC-5, Gerald wrote: >>> >>> I will add it to my long list of things. After you confirm that it works. >>> >>> Gerald >>> >>> >>> >>> On Wed, Sep 4, 2013 at 1:40 PM, Anewbie <[email protected]> wrote: >>> >>>> I had this exact same question as well. Thanks for posting. >>>> >>>> I found this link using Gerald Google search link. Look like a >>>> reasonable approach to back up the image: >>>> http://www.berriman.co.uk/how-to-backup-bbb-emmc-card/ . >>>> >>>> Perhaps this should be added to the BeableBone FAQ? ( >>>> http://circuitco.com/support/index.php?title=BeagleBone_Black_FAQ ) >>>> also might make sense to add the info here as well >>>> ( http://circuitco.com/support/index.php?title=Updating_The_Software ) >>>> >>>> Gerald, are you the best person to contact regarding this suggestion? >>>> (i.e. are you Gerald Coley referenced on the wiki? "If you have any >>>> questions or issues with the content on this Wiki, contact Gerald Coley") >>>> >>>> On Wednesday, September 4, 2013 12:42:01 PM UTC-4, Nik wrote: >>>>> >>>>> hey guys! >>>>> >>>>> the topic actually says it all... im looking for a way to save the >>>>> current state of my BBB to its sd card. im just tired of setting things >>>>> up >>>>> again every time i mess my BBB up and have to flash the eMMC again... >>>>> unfortunately im pretty new to linux as well so i would be really >>>>> greatful for some tips of you guys! >>>>> >>>>> thx >>>>> nik >>>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>> >>> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
