/etc/fstab file no longer working when writing on a NTFS disk
The NTFS driver (ntfs.kext) Apple supplies with OS X provides read-only access. You need to get a r/w driver, and your best bet is to get on by installing OSX FUSE (File Systems in User mode), from http://osxfuse.github.io/ and then the Tuxera NTFS driver (www.tuxera.com/products/tuxera-ntfs-for-mac/‎), or the freeware NTFS-3G. Get the freeware version, and it works just fine. That should solve your problem.