IANAL and not really sure if this would hold up for digital assets, but if there is a search warrant, anything in plain view is up for grabs: en.m.wikipedia.org/wiki/Horton_v._California. I would assume anything on the hard drive can be evidence in court if it is in plain view of the assets of the search warrant.

But also, for simply possession of pirated content, I don’t think the state would charge you, but you could be open to civil litigation if the copyright holders find out somehow.