Some stupid meme my sister showed me went along the lines of "will my laptop get heavier if I put more files in it?", but it was sufficient to get me thinking--is there an energy change & associated mass change when a file is written to a solid state drive?
I don't know enough about how a solid state drive works to know for sure... but my intuition says that for highly compressed files, the informational entropy is probably the same as an unwritten (sector? Again, I don't know that much about SSDs). However, I wonder if highly organized/low entropy files, such as uncompressed text files or bitmaps, would affect a change in the mass of the drive, one way or another.