OpenWrt will rather early in the boot cycle check if the user wants to enter the failsafe mode instead of a normal boot. On most routers, OpenWrt will blink an LED (usually “Power”) during the boot process after it gets control from the initial bootloader (like u-boot). (For DSA enabled devices it will enable LAN 1 only, see robimarko's answer). Sometimes you need to connect to a specific network port of your router to get connectivity. Make sure you use a wired connection, since the failsafe will disable your wireless connectivity. dev/root /rom squashfs ro,relatime 0 0 Entering failsafe mode The terminal should return something similar to this: To verify whether your device has the SquashFS root partition, check for “squashfs” either in the OpenWrt image name or perform the following check on your device: It is similar to a reset, however with failsafe, you can access your device and restore settings if desired, whereas a reset would just wipe everything.Ĭaveat: Failsafe mode is only available if you have installed firmware from a SquashFS image, that includes the required read-only root partition. When you reboot in failsafe mode, the device starts up in a basic operating state, with a few hard coded defaults, and you can begin to fix the problem manually.įailsafe mode cannot, however, fix more deeply rooted problems like faulty hardware or a broken kernel. after a configuration error, then failsafe mode is there to help you out. If your device becomes inaccessible, e.g. OpenWrt allows you to boot into a failsafe mode that overrides its current configuration.
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