H-1B is approved, can i travel on B1?

H-1B is approved from Oct. 1, 2012. Can I travel to US on Business Visa (B1) and then do change of status from B1 to H-1B? If Yes, when can i file for COS after entering US?

Yes, it is possible on paper. But, you need to understand the risks associated with it…Because, you are changing your visa type and the purpose of your travel to US. You may have to defend your COS decision, next time you travel outside of US or why you are applying for COS…