To avoid damage to the file system, you must gracefully shut down the JUNOS software before powering off the router.
To stop the JUNOS software:
This command stops all system processes and halts the operating system. For example:
user@host> request system halt
Halt the system? [yes,no] (no) yes shutdown: [pid 3110] Shutdown NOW! *** FINAL System shutdown message from root@host *** System going down IMMEDIATELY user@host> Dec 17 17:28:40 init: syslogd (PID 2514) exited with status=0 Normal Exit Waiting (max 60 seconds) for system process `bufdaemon' to stop...stopped Waiting (max 60 seconds) for system process `syncer' to stop...stopped syncing disks... 4 done Uptime: 3h31m41s ata0: resetting devices.. done The operating system has halted. Please press any key to reboot.