[SOLVED] After updating yesterday...

[Nachteule]

Hmmm, Input/output error sounds not good, could be hardware failure (sd-card broken)

Sure, if you don't have backup you have to configure system completely again.

Btw, never heard anything from making backups? XBian has brilliant backup function, you can make schedule image backups so if you would have one restoring sys is quite simple: just reflashing sd card with that backup