HOWTO recover a corrupted SRX file system

In this post, I will show you how you can use a functional Juniper SRX to repair a corrupt SRX firewall by using a usb-drive.

The 1st steps are to have a similar model SRX and a usb-drive. On the working SRX, you will build snapshot and specify the usb-drive as the media type.

      request system snapshot media usb

This can take some time, so be patient.


Next, insert the usb-drive into the bad SRX and power on. The device should scan the usb bus and boot from this drive. The time could be upwards to 10-15mins before it has fully boot.

Next, login into the SRX  device;

It's a good time to look over the storage ;

And finally, you will do the 2nd snapshot but this time to media internal.

     request system snapshot media internal



 This could take some time so be patient.



This should net you a snapshot of the current junos version and configuration to the internal drive from the usb-drive that was insert.

NSE ( network security expert) and Route/Switching Engineer

kfelix  -----a----t---- socpuppets ---dot---com

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