Hello, I quite often have to clone a Beaglebone and dd is far too much time consuming for me. For that, I process that way:
- make a reference installation on an eMMC (currently the single partition image from Robert Nelson) - use a separate SD card image and boot from this. - create a mount point on the SD card and mount eMMC to the mount point - tar cvfz archive.tgz -C <mount point> On the target system: - Boot from SD card - MLO and uImage are copied to eMMC from the ones on the SD card (this is a weak point but working for me) - fdisk eMMC for one partition and mkfs.ext4 - mount eMMC partition and untar tgz to it. - !!! remove ssh keys and generate new ones !!! - !!! edit uuid of the eMMC partition in uEnv.txt !!! I am starting this skript automatically after boot using a systemd process, when ready the board goes into powerdown. Whole flashing procedure takes about 2min. It is safe, if not working it can be re-done several times. Like to say from my experience that this is production grade. That is done with a skript: #!/bin/sh # reference: https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-SetupmicroSD/SDcard # precondition: make a tgz of an existing eMMC installation # boot from a SD card # mount the eMMC into a mounting point and then compress it with tar cvfz -C <mountpoint>/ set -x -e #umount mmc1 ntpdate -bv ptbtime2.ptb.de export DISK=/dev/mmcblk1 dd if=/dev/zero of=${DISK} bs=1M count=10 dd if=/opt/backup/uboot/MLO of=${DISK} count=1 seek=1 conv=notrunc bs=128k dd if=/opt/backup/uboot/u-boot.img of=${DISK} count=2 seek=1 conv=notrunc bs=384k sudo sfdisk --in-order --Linux --unit M ${DISK} <<-__EOF__ 1,,0x83,* __EOF__ mkfs.ext4 ${DISK}p1 -L rootfs sync mount ${DISK}p1 mmc1 tar xfm <previouly_archived_root_file_system> -C mmc1 BLKID=`blkid -o export /dev/mmcblk1p1 | grep -i uuid` UUID=$(echo $BLKID | tr '[:upper:]' '[:lower:]') sed -i "s/uuid=.*/$UUID/I" mmc1/boot/uEnv.txt rm -fv mmc1/etc/ssh/*key* ssh-keygen -t dsa -b 1024 -f mmc1/etc/ssh/ssh_host_dsa_key -q -N "" ssh-keygen -t rsa -b 1024 -f mmc1/etc/ssh/ssh_host_rsa_key -q -N "" ssh-keygen -t ecdsa -b 256 -f mmc1/etc/ssh/ssh_host_ecdsa_key -q -N "" umount mmc1 poweroff -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
