Quick format is all that is necessary if it is a new hard drive. Even copying a file from one part of the drive to another, it needs to decompress, move the file and then recompress!ģ. Do not enable compression for best hard drive performance. Warning: Unit Allocation Size greater than 4kB means you won't be able toĢ. I looked it up and since I have files of all sorts of sizes, the best allocation size is the default one. Default Cluster Unit Allocation size (I think it might be 512 bytes?). Sorrow67 has outlined directly above exactly what I did to solve the problem except I'll just add that I formatted my hard drive with the following settings:ġ.