Question: What could be causing this behavior? I think it is wearing my hard drive down. D is not the system disk, it is for data storage. This happens even if I am not accessing it in any way, but something triggers it, because this does not happen immediately after restart.
Answer: $LogFile is a file which collates all changes to your file system. It’s not only used by the System, but also by your programs e.g. Chrome.exe or iTunes.exe, so if it’s shifting data and such around. It will write the changes to $Logfile.