Problem Copy big Table sqlserver 2012

Hi Friends,

Its 4th day I am trying to copy  table having 7 million record with text field  into same database (sqlserver 2012)  , but fail although I am using blade server with 256 Gb memory and multiprocessor. My query as followed

select * into newtable from  maintable where flag=0 

(Just while ago   I  canceled above statement (query) which was working since last 14 hours on server)

Please help mean how I can copy.

thank you.

regards,

asad

asad