750MB free space on trisquel card?

According to this page http://www.fsf.org/blogs/membership/trisquelcard I am supposed to see 750MB free space left on my trisquel card so I can save files/configs.

But what I see is a 160MB mounted home.

What am I missing here?

This is Taranis Trisquel running live.

Thanks!

Filesystem Size Used Avail. Use% Mounted on
aufs 926M 41M 886M 5% /
none 919M 304K 919M 1% /dev
/dev/sdb1 1,7G 1,7G 31M 99% /cdrom
/dev/loop0 1,5G 1,5G 0 100% /rofs

/dev/sdb2 160M 129M 32M 81% /home

none 926M 996K 926M 1% /dev/shm
tmpfs 926M 24K 926M 1% /tmp
none 926M 320K 926M 1% /var/run
none 926M 0 926M 0% /var/lock
none 926M 0 926M 0% /lib/init/rw