Do i need to go again in H1B lottery ?

Hello Friends, i got selected in H1B lottery for the first time after 2 consecutive attempt. my petition got approved for only one year which was from Oct 2015-Sep 2016. i also went for stamping and got visa stamped for same one year.

I never travelled and joined the company in USA due to some personal problem. now i am interested and opting for USA.

do i need to to go for lottery again or my petition can be transfered ? few people say you need to go in lottery again as your petition itself was for one year. but few says it can be transfered till or before 6 years . this has confused me.

No need of lottery. You can have it transferred without issues.