Create Snapshot Image in Auto Mode

Last modified by Microchip on 2026/08/17 10:50

Boot and Enter Restore Mode

Power on the system to start the boot process. When prompted, enter the root password to log in as the root user.


To enter Backup mode, run the following command:

# echo mem>/sys/power/state

The system then enters RESTORE mode.

Boot and enter BSR mode

Exit RESTORE and Save Snapshot Image

The system automatically asserts a CPU reset and the Read-Only Memory (ROM) boot sequence starts.

During this process:

  • at91bootstrap exits Double Data Rate (DDR) self-refresh
  • at91bootstrap analyzes memory maps and saves only the valid Dynamic Random-Access Memory (DRAM) contents as snapshot image

Saving a snapshot image to the SD™ card takes a few seconds.

Exit BSR and Save Snapshot Image


Finally, power off the board.