[SOLVED] duplicate/clone an xbian installation

[effemmeffe]

Hello, mk01.
I was trying to set up a live backup of my entire sd card, so I wrote this mesage: http://forum.xbian.org/thread-598-post-10917.html#pid10917
In the thread I got the suggestion to use the command line: dd if=/dev/mmbclk0 of=/media/usb/backup.img and so I did it.
Now I have a cronjob that does that command and I was confident that my sd wwas backupped.
Then I stumbled in this thread and now I have one doubt: is my backup working or I have to change it?