SyncToy painlessly syncronises files and folders on a PC over a network and also partitions on the same hard drive, usefull for duel booting. This allows you to sync music, photos, documents too and SyncToy will copy the new files to a USB or SD card. It can sync any file/folder including your Outlook .pst file to portable drive as well. It’s free, it’s easy and it works. All Windows OSs, x86-x64.

[SyncToy v2.1 from Microsoft]