Later today I may have to access (read & write) an NTSF HD last used with a now-dead Windows PC. While Macs can read such drives, they can't natively write to them. I don't wish to pay for such limited-use software & the client is in no financial position to do so either. So I'm trying a free app called Mounty. If that fails, then I can take a 15 day trial of Tuxera NTFS.