Recover Juniper SRX from failed boot

[Edit 2018-05-14] This article describes how to boot into the backup partition from u-boot. If your primary still boots, try “request system reboot media internal” (Branch SRX) or “request system reboot media disk” (High-End SRX) instead. Thanks to batdosi for this. They also mention sysctl from shell, that may be another way to set the […]