I was attempting to enable NTFS write support on my friend's MBP via a third-party driver but it wasn't working, so I tried to uninstall the third-party driver by deleting it via terminal but I think I also accidentally deleted a system folder. Nothing seems to be malfunctioning right now, but is there any way to get the folder back? My friends doesn't do Time Machine backups at this time so that's not an option. I'm so embarrassed. I did sudo rm -R /System/Library/Extensions/ntfs.kext I wanted to remove ntfs-free.kext but didn't realize I was deleting the wrong one. So now I've deleted the system folder ntfs.kext... and I don't know how to get it back! I solemnly swear never to go recklessly poking around Terminal on someone else's computer from now on, but for the time being, is there any way I can restore this file on her computer without her having to reinstall her whole OS? She has the newest Mountain Lion update on her computer right now.