Lumia 1020 :: Backing Up RAW Files

I am at my wits end trying to work out how to back up the RAW files from the Nokia 1020 to an external hard drive.

When I use the windows phone app on my Mac computer it always converts it to a jpeg file. Even if I drag the file to the desktop.

When I copy it to iPhoto, then try and export the original Raw file it exports a jpeg. Even if I tell it to export original.

It appears that iPhoto is using the RAW file becasue there is no jpeg written at the end of the file name, plus the file looks smooth when enlarged in iPhoto