TS-7180 eMMC Backup/restore: Difference between revisions
From embeddedTS Manuals
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To write a new filesystem to the TS-7180: | To write a new filesystem to the TS-7180, first boot to an SD card or USB stick. Then re-image the eMMC: | ||
<source lang=bash> | <source lang=bash> | ||
# The eMMC is /dev/mmcblk1. | |||
# | # | ||
# | # Ensure the media has an MBR (not GPT) partition table with exactly one partition. | ||
# Re-partition the device with fdisk or gparted if it isn't already partitioned correctly. | |||
sudo mkdir /mnt/emmc/ | sudo mkdir /mnt/emmc/ | ||
sudo mkfs.ext4 -O ^metadata_csum,^64bit /dev/mmcblk1p1 | sudo mkfs.ext4 -O ^metadata_csum,^64bit /dev/mmcblk1p1 | ||
# If the above command fails, | # If the above command fails, complaining of an invalid filesystem option, it is fine to omit that flag: | ||
# | # An older mkfs.ext4 that doesn’t understand it also can’t create a backwards compatibility issue. | ||
sudo mount /dev/mmcblk1p1 /mnt/emmc/ | sudo mount /dev/mmcblk1p1 /mnt/emmc/ | ||
tar -xjf /path/to/ts7180-new-image.tar.bz2 -C /mnt/emmc | tar -xjf /path/to/ts7180-new-image.tar.bz2 -C /mnt/emmc | ||
Revision as of 18:16, 1 October 2021
The simplest way to backup/restore the eMMC is through u-boot. If you boot up and stop in u-boot you can run this command:
ums 0 mmc 1
This will make the board act as a USB mass storage device with direct access to the emmc disk. On a linux workstation, to backup the image:
dmesg | tail -n 30
# Look for the last /dev/sd* device connected. This should also match the eMMC
# size of around 3.78GiB. On my system, this is /dev/sdd.
sudo mkdir /mnt/emmc/
sudo mount /dev/mmcblk1p1 /mnt/emmc/
cd /mnt/emmc/
tar -cjf /path/to/ts7180-backup-image.tar.bz2
cd ../
umount /mnt/emmc/
sync
To write a new filesystem to the TS-7180, first boot to an SD card or USB stick. Then re-image the eMMC:
# The eMMC is /dev/mmcblk1.
#
# Ensure the media has an MBR (not GPT) partition table with exactly one partition.
# Re-partition the device with fdisk or gparted if it isn't already partitioned correctly.
sudo mkdir /mnt/emmc/
sudo mkfs.ext4 -O ^metadata_csum,^64bit /dev/mmcblk1p1
# If the above command fails, complaining of an invalid filesystem option, it is fine to omit that flag:
# An older mkfs.ext4 that doesn’t understand it also can’t create a backwards compatibility issue.
sudo mount /dev/mmcblk1p1 /mnt/emmc/
tar -xjf /path/to/ts7180-new-image.tar.bz2 -C /mnt/emmc
umount /mnt/emmc/
sync