Oh really this backup is likely to lose money? I'm doing my backup in this way. So what is the best way to backup ? Advice please ?
As I already said:
It depends on which wallet you are using.- Armory?
- Bitcoin-Qt?
- Electrum?
- MultiBit?
- blockchain.info?
- YACC?
Neither you, nor the OP have indicated yet which wallet you are using. The required backup strategy will differ depending on which wallet you are using.