Prince Harry has admitted he held things back in his memoir Spare because he didn't think his family "would ever forgive me".
The UK royal officially released his much-awaited memoir earlier this week, days after it was leaked.
During an interview with the UK's Telegraph newspaper after the book's release, Prince Harry revealed the initial draft of his memoir differed from the final product.
"It was 800 pages and now it's down to 400 pages. It could have been two books, put it that way," he commented.
"There are some things that have happened, especially between me and my brother, and to some extent between me and my father, that I just don't want the world to know. Because I don't think they would ever forgive me."
He said he found it difficult to work out what to keep and what to scrap.
"Because on the scale of things I could include for family members, there were certain things that - look, anything I'm going to include about any of my family members, I'm going to get trashed for," the 38-year-old explained to The Telegraph. "I knew that walking into it. But it's impossible to tell my story without them in it because they play such a crucial part in it."
In the book, Prince Harry divulged he had begged his father King Charles not to marry his second wife Camilla, now the Queen consort. The book also delivered numerous other revelations, including that elder brother and heir to the throne Prince William had knocked him over during a heated argument.
Publisher Penguin Random House has said the memoir secured the largest first-day sales total for any non-fiction book it had ever published with more than 1.4 million copies sold in the US, Canada and the UK.
So far, neither Buckingham Palace nor aides for any of the royals have commented on Prince Harry's disclosures.
Reuters / Newshub.