Why didnt Dumbledore tell everyone about horcruxes?

Even if nobody believed him about Horcruxes or he didn’t know about the Horcrux until after CoS there was still the Prophecy which the Department of Mysteries had. The prophecy stated that the Dark Lord would just mark him and that he wouldn’t die until Harry killed him.

Why did Dumbledore not tell Harry How do you destroy a Horcrux?

Dumbledore made no plans to inform Harry of how to destroy Horcruxes. It was only sheer, dumb luck/quick thinking on Hermione’s part that meant that the trio knew the theory of Horcrux-destruction. Dumbledore just left the Hogwarts library books lying around in his office and made no attempt to bequeath them to Harry.

Did Dumbledore always know Harry was a Horcrux?

It’s easy to forget, given his undeniable talent for knowing things and his astonishing powers of deduction. But Dumbledore does learn and discover and realize things throughout the Harry Potter series. And at this point, he still does not know about the Horcruxes.

Why did the Basilisk fang destroy Horcruxes?

After being healed, Harry took the fang and stabbed Riddle’s diary, destroying that Horcrux beyond magical repair. Because Harry had stabbed the Basilisk with the sword, it was imbued with Basilisk venom and was therefore able to destroy Horcruxes and poison opponents that it cuts through as well.

Is Regulus Black referenced in any of the Harry Potter movies?

Regulus Black was indeed referenced in two of the Harry Potter movies. In Harry Potter and the Half-Blood Prince, Professor Slughorn, upon his first meeting with Harry inside the house Slughorn is occupying in the village of Budleigh Badderton, shows Harry a picture of himself sitting with several former Slytherin Quidditch players.

How did Regulus learn about Voldemort’s Horcruxes?

J. K. Rowling stated in an interview that Regulus learned of Voldemort’s Horcruxes because the Dark Lord indirectly let it slip, like he did in the Little Hangleton Graveyard. Subsequently, Regulus was intelligent enough to realise what it meant.

What is Regulus Black’s signature on the locket?

In Harry Potter and the Half-Blood Prince Regulus Black’s initials — R.A.B. — appear as the signature on the note found inside the fake Slytherin locket Horcrux, which was recovered from Voldemort’s deadly potion basin in the sea cave by Harry and Dumbledore.

How did Harry Potter and Ron Weasley find out about Regulus?

In 1997, Kreacher told Harry Potter, Ron Weasley, and Hermione Granger of Regulus’ attempt to destroy the Horcrux, having been there himself, as the trio also sought to destroy Voldemort’s Horcruxes. They then realised that Regulus was R.A.B. that was signed on the note to Lord Voldemort.