Archive for the ‘pfSense’ Category.

DD over SSH

I wanted to copy my pfsense disk without taking down the machine. (Moving from 3.5″  to 2.5″ disk for increased power savings)  So I’m using DD and piping it over SSH to my file server. No progress bar but my drive is small.

dd if=/dev/sda | ssh root@freenas "dd of=/backup/pfsense.img"

found out adding ‘bs=4k’ or larger made transfer go little faster

dd if=/dev/sda bs=32k | ssh root@freenas "dd of=/backup/pfsense.img"

I topped out around 200mbit, with my router CPU maxed out. Must be SSH’s encryption overhead.

Credit –
DD Man Page –


Hello World! This will be the most boring post ever. For who ever reads this post, my goal with the website is to store notes, steps on how I solved problems, tips, and other computer related things. There has been many times blogs have shown me the way to fix complicated computer issues. So now on I will try to post every computer issues I have with a solution so maybe I can help someone with the same issue.