Why Compact Flash Recovery Might Be Necessary

For media redundancy, we recommend that you keep a secondary storage medium attached and updated at all times. Use the request system snapshot command to perform the update. (For instructions, see Configuring Boot Devices.)

If the primary compact flash disk fails at startup, the Services Router automatically boots itself from the removable compact flash or USB storage device. When a redundant storage medium is not available, the router is unable to boot and does not come back online. This situation can occur if the power fails during a JUNOS software upgrade and the physical or logical storage media on the router are corrupted.

If the primary storage medium becomes corrupted and no secondary medium is in place, you can reload the JUNOS software image onto the corrupted compact flash card with a desktop or laptop computer running either a UNIX, Microsoft Windows 2000, or Windows XP operating system.

This procedure does not recover any router configuration files. After you reinstall the JUNOS software, all the information on the original primary compact flash disk is lost.