i ve installed ubilinux and found this in /etc/inttab
# Boot-time system configuration/initialization script.
# This is run first except when booting in emergency (-b) mode.
now i want to know how to start the emergency mode, because if i take the edison from work to home or back and i forgot to disable the network, the edison starts and the watchdog reboots it if he doesnt find a network and tries to get time over ntpd or tries to get an ip over dhcp.
You can force Debian's rescue mode in U-Boot. You'll need a terminal on the USB serial console (ttyMFD2). Then power Edison on, and quickly press Enter when prompted in U-Boot to press any key. Then type "setenv bootargs_target rescue" then "boot". Since the setting isn't being saved in NVRAM, this only affects the current boot.