Richard Henry, curator of Salisbury Museum, told the BBC: “The steamroller totally annihilated the stone blocks underneath but the hard drive survived better than expected so we put it in a stone crusher afterwards which I think probably finally did it in”.
He said Pratchett did not want his unpublished works to be completed and released by someone else.
He added: “It’s something you’ve got to follow, and it’s really nice that they have followed his requests so specifically.
“It’s surprisingly difficult to find somebody to run over a hard drive with a steamroller.
“I think a few people thought we were kidding when I first started putting out feelers to see if it was possible or not.”
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