Will red cross tell you if your donated blood is positive for hiv?

Yes: In the first place, they wouldn't draw your blood if it is + , they screen all donors and make sure it is free of infection!

Yes: "Donors who are confirmed positive for any infectious disease are notified and have the opportunity to receive counseling with a specially trained, professional Red Cross donor counselor. " see REF: http://www.redcrossblood.org/donating-blood/donation-faqs