I am running a dual boot situation with Windows 10 and Linux Mint 13.1. Within my computer, each OS is separated by resideing on its own hard drive, but externally they share a Western Digital 3 terabyte My Book. The My Book drive is simply plugged into the computer via a USB 3 jack and it holds a ton of pictures and songs and PDF documents. The format of the My Book hard drive is the NTFS format. I have been accessing the files from both the Linux hard drive and the Windows hard drive, but when I do any major downloading it is usually using Windows. My question is since Linux uses a different file system than Windows, am I doing any harm to my system by sharing a storage that is formatted in NTFS, and will this harm my files? I am real new to this stuff and I don't want to permanently mess up the files that I have stored on my external hard drive.