That's pretty much my question: Why Apple doesn't support NTFS?
Because NTFS is owned by Microsoft and Microsoft doesnt license it to anybody for their OS. The same reason Microsoft doesnt support HFS+. Its not technically legal to add support for it without a license and NTFS is not easy to reverse-engineer either.
Apple has to pay a lot of money to do that and the return on investments like that are low, not worth doing it.
Apple did add a read-only support for NTFS external drives.
If you want to add read/write support to your Mac, you can use a third party drivers to do that.
With Bootcamp, Windows is accessing the drive, not OSX.Well, but how do you explain bootcamp? does it somehow fully support NTFS?
That's pretty much my question: Why Apple doesn't support NTFS?
If you need to write to an NTFS partition in OSX, MacDrive does the job transparently.
Because they don't have too and don't want too. They already have NTFS support built into OSX, they just don't want to bring it to another level (write access).
Actually, the write support is there as well and can be enabled via Terminal. Apple was trying to add write support when SL came but they pulled it out in the final builds.
What's the terminal command then?