TS-4900 eMMC Backup/restore: Difference between revisions
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'''Write the image:''' | |||
These commands assume you are booted to the SD card, and | These commands assume you are booted to the SD card, and | ||
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The md5sums command will report what differences there are, if any, and return if it passed or failed. | The md5sums command will report what differences there are, if any, and return if it passed or failed. | ||
'''Backup the image:''' | |||
First boot the board to any SD image. The SD should have enough space for the compressed image of your eMMC. From our default image this is ~500MB. To create an image to your SD card: | |||
<source lang=bash> | |||
mkdir /mnt/sd/ | |||
mount /dev/mmcblk1p1 /mnt/sd/ | |||
cd /mnt/sd/ | |||
tar -cjf /root/backup.tar.bz2 * | |||
umount /mnt/sd/ | |||
</source> | |||
Revision as of 10:53, 29 August 2016
Write the image:
These commands assume you are booted to the SD card, and
# Verify nothing else has this mounted
umount /dev/mmcblk2p1
mkfs.ext4 /dev/mmcblk2p1
mkdir /mnt/emmc
mount /dev/mmcblk2p1 /mnt/emmc
wget ftp://ftp.embeddedarm.com/ts-socket-macrocontrollers/ts-4900-linux/distributions/yocto/fido/ts-x11-image-tsimx6-latest.tar.bz2
tar -xf ts-x11-image-tsimx6-latest.tar.bz2 -C /mnt/emmc
umount /mnt/emmc
sync
After it is written you can verify the data was written correctly.
# Drop any block cache
echo 3 > /proc/sys/vm/drop_caches
mount /dev/mmcblk2p1 /mnt/emmc
cd /mnt/emmc/
sudo md5sums -c md5sums.txt
umount /mnt/emmc
sync
The md5sums command will report what differences there are, if any, and return if it passed or failed.
Backup the image: First boot the board to any SD image. The SD should have enough space for the compressed image of your eMMC. From our default image this is ~500MB. To create an image to your SD card:
mkdir /mnt/sd/
mount /dev/mmcblk1p1 /mnt/sd/
cd /mnt/sd/
tar -cjf /root/backup.tar.bz2 *
umount /mnt/sd/