Of course, you can write to an external hard drive formatted with NTFS on Mac. iBoysoft NTFS for Mac is a good choice for you to write on it without formatting it.
As for the NTFS drive, you can only read it on Mac but write on it. iBoysoft NTFS for Mac is a professional app to mount your Windows NTFS drive in the read-write mode without formatting it. Using this software, you can delete, edit, rename, and write files on NTFS drives in macOS & Mac OS X freely.
- Free download and activate iBoysoft NTFS for Mac.
- Connect your NTFS drive to your Mac.
After you connect your drive successfully, you can mount your NTFS drive in read-write mode.