Backup your flash memory

Overview

This How-To is meant to be a starting point for people to learn to backup and restore the flash memory from IGEP Boards.

Requirements

There are some requisites to follow this guide:

• IGEP Board
• MicroSD card with the latest IGEP Firmware Yocto
• PC
• IGEP remote terminal, using a serial cable or Ethernet communication

Backup

• Boot your IGEP Board using a microSD card
• Log as a root user
• Mount flash memory partition using the following commands:

mkdir /tmp/mtdblock1
mkdir /tmp/mtdblock2
mount -t jffs2 /dev/mtdblock1 /tmp/mtdblock1
mount -t jffs2 /dev/mtdblock2 /tmp/mtdblock2

• Backup your flash memory:

mkdir /home/root/backup
tar -cvf /home/root/backup/igepinikernel.tar /tmp/mtdblock1/
tar -cvf /home/root/backup/rootfs.tar /tmp/mtdblock2

• Backup IGEP X-Loader binary:

cp /media/mmcblk0p1/MLO /home/root/backup/MLO

• Shutdown your system

Restore

• Boot your IGEP Board using the same microSD card used when you backup your system
• Log as a root user
• Erase flash memory using the following commands:

flash_eraseall /dev/mtd0
flash_eraseall /dev/mtd1
flash_eraseall /dev/mtd2

• Mount flash memory partition using the following commands:

mkdir /tmp/mtdblock1
mkdir /tmp/mtdblock2
mount -t jffs2 /dev/mtdblock1 /tmp/mtdblock1
mount -t jffs2 /dev/mtdblock2 /tmp/mtdblock2

• Restore igep.ini, Kernel and rootfs:

cd /
tar xvf /home/root/backup/igepinikernel.tar
tar xvf /home/root/backup/rootfs.tar

• Copy IGEP X-Loader binary to flash memory:

 writeloader -i /home/root/backup/MLO -o /dev/mtd0

• Shutdown your system

Test results

Once you restored your system image. Boot up IGEP Board using flash memory device and test the results.