NTFS Drive Read-Only on Mac: Why and What to Do

You plug a drive from a Windows PC into your Mac. Every file opens fine — but you cannot save, rename, delete, or copy anything onto it, and Get Info reports "You can only read." Nothing is broken. The drive is formatted as NTFS, Windows' native file system, and macOS deliberately mounts NTFS volumes read-only. Here is why, and the three realistic ways forward.

Why macOS won't write to NTFS

NTFS is Microsoft's proprietary file system. Apple ships a driver that can read it reliably, but writing to NTFS safely requires implementing Microsoft's undocumented internals — journaling, permissions, metadata — where a single bug corrupts the volume. Apple has never licensed or finished a write implementation it was willing to support, on any macOS version from Ventura through Sequoia. So reads work, writes are refused, and this is policy, not a fault you can repair with First Aid or permissions fixes.

Confirm the diagnosis in five seconds: select the drive, press Cmd+I, and check the Format line — it will say Windows NT File System (NTFS) — and the sharing section, which reports read-only.

Option 1: reformat to exFAT (best for most people)

If the drive shuttles files between Mac and Windows, the clean fix is a file system both write natively. That is exFAT — full read/write on macOS and Windows, no drivers, no size limits that matter.

Reformatting erases the drive, so the order of operations is everything:

1. Copy everything you need off the drive first (reading works fine, so copy to the Mac, another disk, or a PC).
2. Open Disk Utility, choose View → Show All Devices, and select the drive's top-level device.
3. Click Erase, name the drive, choose exFAT as the format and GUID Partition Map as the scheme, and confirm.
4. Copy your files back.

If the drive will only ever live on Macs, choose APFS instead — see our full formatting guide for the trade-offs. There is no undo for an erase; the backup in step one is the safety net.

Option 2: a commercial NTFS driver

When reformatting is off the table — the drive belongs to someone else, it is your Windows PC's game library, it is too full to back up — paid third-party drivers add NTFS write support to macOS. The established options are Paragon Microsoft NTFS for Mac and Tuxera NTFS; both cost roughly the price of a lunch, install as system extensions (expect to approve them in System Settings → Privacy & Security), and have long track records. This is the one category where we would not hunt for a free alternative: the free routes — macFUSE with NTFS-3G, or flags that force Apple's own driver into experimental write mode via /etc/fstab — are exactly the setups that corrupt volumes, and the data on the drive is worth more than the license fee. Uninstalling the driver returns the Mac to stock read-only behavior.

Option 3: don't write on the Mac at all

For a one-off transfer, route around the limitation:

• Copy files from the NTFS drive freely — reading is unrestricted.
• To get files onto it, use a Windows PC: move the files over the network, AirDrop-to-cloud, or a USB stick formatted as exFAT, then write to the NTFS drive from Windows.
• If the "drive" is a partition on your own Mac from Boot Camp days, share files through a cloud folder or an exFAT volume both systems can write.

Slow, but free and risk-free — the right call when you touch NTFS once a year.