So then for Step 2 IF one needs to boot from this USB: Is that all it takes? If so, then that's Step 1. I understand that all I need to do is create a SNAPSHOT from the GUI (or likely equivalent operations from the CLI). I have a working SRX340 and am planning to upgrade the firmware.īecause the firmware upgrade is quite a few levels "up", I want to have a bootable USB. " If you have a high end device you can create bootable USB using the image on Juniper site." I don't know what this means. I agree with the confusion re: being able to boot from USB and being able to upgrade from USB. But many of the terms are a bit strange for me at this point. I can see that this thread is loaded with good information. Once the device will reboot completely it will ask for user name, and it will allow you to go inside CLI> of the device. Once the installation is complete, the device will reboot automaticaly and prompt for ejecting the USB so that it can boot from the Compact-flash as shown below.Įp: /mnt/etc/db/pkg/*/+COMMENT: No such file or directory machdep.bootsuccess: 0 -> 1 machdep.nextbootdev: usb -> compact-flashĮject the installation media and hit to reboot? Press Y to format the compact-flash and reinstall the Junos packages on it. WARNING: The installation will erase the contents of your disks. = Bootstrap installer starting =ĭiscovered that flash disk = ad0, hard disk = ad2 Trying to boot from USB Loading /boot/defaults/nf Then you will observe a message that the device is booting from USBįreeBSD/PowerPC U-Boot bootstrap loader, Revision 2.2 Once it completes, unplug the USB and plug into a another firewall (slot0 of routing engine) in which compact flash is corrupted and then reboot the device. Run this command from shell prompt:% dd if=/var/tmp/test/install-media-package-name of=/dev/da0 bs=64k.Run this command from shell prompt:% dd if=/dev/zero of=/dev/da0 count=20 (Make sure that the USB is on slot0 of routing engine).Use FTP to copy the installation media into the firewall’s /var/tmp/test.Create the directory /var/tmp/test/: % mkdir /var/tmp/test/.Login into a working firewall using root username and password.Download install media file from the Juniper support website.Perform the following procedure to prepare a USB Boot disk with install-media file: The Junos software is kept as a backup in USB so that if there is any damage to the installed software it can be revived from the USB drive itself. The emergency boot disk repartitions the primary disk and reloads a fresh installation of the Junos Software. If the router’s Junos Software is damaged hence preventing the Junos Software from loading completely, you can use the emergency USB boot disk to revive the router. Verify that the USB is mounted to the cd lsĦ.Exit shell and install the request system software add /tmp/usb/ no-validate no-copyįor additional details regarding a software installation, refer to the instructions at Installing the Software.ħ.Upon completion, reboot the request system reboot da0s1)ĥ.Mount the USB to the mount -t msdosfs /dev/ mount -t msdosfs /dev/da0s1 /tmp/usb (there is a space between the label name and /tmp) Locate difference in outputs to locate drive label. For example, slot 0 would return the following: Please find the detaield steps to Install Software via CLI from Junos software copied to USB stickįollow these steps to install the software via the CLI from a USB stick:ġ.Download the Junos upgrade file to the USB stick.Ģ.Locate the USB device ID that Junos is associating to the USB start ls /dev/ģ.Insert the USB device into the USB slot.
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