TS-4900 MicroSD Backup/restore

These instructions assume you have an SD card with one partition. Most SD cards ship this way by default. If the card has had its partition table modified this can be corrected with a tool like gparted or fdisk.

Plug the SD card into a USB reader and connect it to your Linux PC. These instructions assume your SD interface is /dev/sdc, but check dmesg in your PC to see what

Running these commands will reflash the SD card to our default latest image.

# Verify nothing else has this mounted
sudo umount /dev/sdc1

sudo mkfs.ext3 /dev/sdc1
sudo mkdir /mnt/sd
sudo mount /dev/sdc1 /mnt/sd/
wget ftp://ftp.embeddedarm.com/ts-socket-macrocontrollers/ts-4900-linux/distributions/yocto/fido/ts-x11-image-tsimx6-latest.tar.bz2

sudo tar -xf ts-x11-image-tsimx6-latest.tar.bz2 -C /mnt/sd
sudo umount /mnt/sd
sync

Note:

The ext4 filesystem can be used instead of ext3, but it may require additional options. U-Boot does not support the 64bit addressing added as the default behavior in recent revisions of mkfs.ext4. If using e2fsprogs 1.43 or newer, the options "-O ^64bit,^metadata_csum" must be used with ext4 for proper compatibility. Older versions of e2fsprogs do not need these options passed nor are they needed for ext3.

After it is written you can verify the data was written correctly. Reinsert the disk to verify any block cache is gone, then run these:

mount /dev/sdc1 /mnt/sd
cd /mnt/sd/
sudo md5sum -c md5sums.txt
umount /mnt/sd
sync

The md5sum command will report what differences there are, if any, and return if it passed or failed.