A Windows drive on your Mac: NTFS, exFAT and sharing drives with Windows

You plug a drive from a Windows PC into your Mac, all your files show up, but you can’t copy anything onto it. Nothing is broken. It’s NTFS. In this whitepaper from the series “Mac and the rest of the world” we explain why that happens, which file system to pick for a drive you share with Windows, and when a third-party NTFS driver is actually worth paying for.

Why your Mac can’t write to NTFS

NTFS is the standard file system on Windows, and Microsoft owns it. macOS can read NTFS but can’t write to it, and that’s still true in macOS Golden Gate. So the drive appears in Finder, you can open files and copy them to your Mac, but saving new files, renaming or deleting anything won’t work. Right-click the drive, choose Get Info, and at the bottom you’ll see you only have read access.

Apple has never officially explained why. The usual explanation is a mix of licensing and risk: NTFS is a closed format, and a driver that writes to it badly can damage your data. Apple would rather offer read-only access than take a risk that ends up at its own support desk.

Disk Utility doesn’t list NTFS as a format either, so you can’t create an NTFS drive with it.

The file systems side by side

For an external drive there are realistically five options. Your Mac can create four of them in Disk Utility. NTFS isn’t one of them.

Why exFAT is usually the answer

If you want a drive that both your Mac and a Windows PC can read and write without installing anything, exFAT is where you end up. Apple says as much: MS-DOS (FAT) for Windows volumes of 32 GB or less, exFAT for anything bigger. Large video files, photo folders, document backups, it all fits.

It does have drawbacks, and you should know them:

• No journaling. APFS, HFS+ and NTFS keep track of what they’re doing, so after a power cut or a yanked cable the drive can get itself back into a consistent state. exFAT doesn’t. Pull the drive while it’s still writing and there’s a real chance of corruption. Always eject in Finder first, and use Safely Remove on Windows.
• No Time Machine. Time Machine can’t back up to a drive formatted for Windows. It needs APFS.
• No encryption. exFAT has no built-in encryption like APFS (Encrypted). If the drive travels in your bag, that’s worth thinking about.
• Clutter files. Your Mac stores extra information in hidden files whose names start with ._. You won’t see them on the Mac, but Windows will. They’re harmless and you can delete them on the Windows side.

FAT32 and the 4 GB limit

FAT32, called MS-DOS (FAT) in Disk Utility, is the oldest and most widely compatible format. Car stereos, older TVs, printers and some firmware updates only accept FAT32. The catch is that no single file can be larger than 4 GB. A film or a disk image of a few gigabytes simply won’t go on, and you’ll get a message saying the file is too large even though there’s plenty of free space. Only use FAT32 when a device insists on it.

Reformatting in Disk Utility

Turning an NTFS drive into exFAT or APFS is free with Disk Utility. But be clear about this: formatting erases everything on the drive. There’s no Bin and no undo.

Get your data off first

Because your Mac can read NTFS, you can copy the files from the drive to your Mac before you format it. If you don’t have room, copy them to another drive or to cloud storage from a Windows PC. Then check that everything is really there, open a few files, and only then erase.

Show All Devices

This is the step most people miss. By default Disk Utility only shows volumes, the partitions on a drive, not the physical drive itself. If you erase just the volume, the old Windows partition layout stays in place. That often works, but sometimes you get odd errors afterwards or Time Machine refuses the drive. So choose View > Show All Devices from the menu bar. The sidebar then shows the physical drive at the top level with its volumes indented underneath. Select that top line.

Erase and choose the right format

With the physical drive selected, click Erase. You choose a name, a format and a scheme. For a shared drive pick exFAT, for a drive that only ever connects to your Mac pick APFS. For the scheme, choose GUID Partition Map. It works with every modern Mac and with Windows 11. Only very old devices or a car stereo sometimes want Master Boot Record, and that’s the exception.

Third-party NTFS drivers

If the drive has to stay NTFS, say because it’s attached to a Windows PC at work or because it holds terabytes you can’t park somewhere else, you can install a driver that gives your Mac write access. These are the well-known options, with the status the makers themselves give in October 2026:

• Microsoft NTFS for Mac by Paragon Software. According to Paragon, version 18 supports macOS 27 Golden Gate from build 18.0.24, on Intel and Apple silicon. If you bought a licence on or after 18 September 2024, the upgrade is free. Older licences get 30 percent off version 18. There’s a ten-day trial. I couldn’t find a reliable current price, so check Paragon’s site.
• Microsoft NTFS for Mac by Tuxera. Tuxera lists support for macOS 27 Golden Gate, on Intel and Apple silicon. A personal licence costs 28.95 euros (or US$28.95), one-off, and covers up to five Macs. There’s a free trial.
• iBoysoft NTFS for Mac. iBoysoft says it works with macOS 27 and uses Apple’s FSKit to do so, which means you don’t need to lower your Mac’s security in Recovery. Software comparison sites list prices starting at around US$20.

What to watch out for

A file system driver sits deep in your system. Older drivers ran as kernel extensions. On an Apple silicon Mac that meant starting up in Recovery, lowering security to Reduced Security and then approving the extension under Privacy & Security in System Settings. Newer versions increasingly use FSKit, Apple’s newer way of running file systems outside the kernel. Then you only need to allow a system extension. Your driver’s installation guide will tell you which route it takes.

Also: any major macOS update can stop your driver working until the maker ships an update, and your drive goes back to read-only in the meantime. Never install two NTFS drivers at once, they get in each other’s way. And free tools built on old open source code tend to be slow or simply broken on recent versions of macOS.

The hidden Terminal trick: don’t

There’s still a trick doing the rounds where you edit a system file in Terminal so macOS switches on a hidden, experimental NTFS write mode. We’d advise against it, for three reasons. Apple never released that write mode, precisely because it wasn’t reliable. There are plenty of stories of files going missing or being corrupted afterwards, sometimes only noticed once the drive went back into a Windows PC. And according to iBoysoft, among others, the trick hasn’t worked at all since macOS Ventura, because the old NTFS code was replaced. So you may be making a system change for something that, at best, does nothing. Copy your data, reformat to exFAT, or buy a driver that’s actually supported.

Reading APFS drives on Windows

The other direction is just as awkward. Windows 11 can’t read APFS or Mac OS Extended. Plug a Mac drive into a Windows PC and Windows will often offer to format it. Click Cancel, or you’ll lose everything.

If you need those files, there’s APFS for Windows by Paragon Software. It lets Windows read APFS drives and, to a limited extent, write to them. Paragon also sells it in a bundle, the Mac ToolBox, together with NTFS for Mac, HFS+ for Windows and CampTune, for US$54.99. I couldn’t check how well write support works with drives created by macOS 27. Use it mainly to get files off a drive, not as an everyday working disk.

Which format suits you

You move a drive back and forth between Mac and Windows

Format it as exFAT. Free, works on both sides with no extra software. Get into the habit of always ejecting properly.

Someone occasionally hands you an NTFS drive

Do nothing. Your Mac can read NTFS, so copy what you need to your own drive. If you have to give something back, ask for a USB stick formatted as exFAT.

The drive has to stay NTFS and you need to write to it

Buy an NTFS driver from Paragon, Tuxera or iBoysoft. Try the free trial first and make sure it works with your version of macOS.

You want to back up with Time Machine

Use a separate drive formatted as APFS. If you also want space for Windows on the same drive, create two partitions: an APFS one for Time Machine and an exFAT one for sharing. A separate drive is tidier, though.

It’s going into a car stereo, TV or older device

FAT32 (MS-DOS FAT) with Master Boot Record. Keep the 4 GB per file limit in mind.

You have a Mac drive and need it on Windows

Paragon’s APFS for Windows, or connect the drive to a Mac and share the files over the network or through the cloud.

Step-by-step plan

1. Connect the drive and use Get Info in Finder to see its format and whether you can write to it.
2. Use the overview above to decide which format you actually need.
3. If the drive has to stay NTFS, install a driver and follow the maker’s installation steps for your Mac.
4. If you’re going to format, copy every file somewhere else first and check they’re all there.
5. Open Disk Utility and choose View > Show All Devices.
6. Select the physical drive, the top level, not the volume beneath it.
7. Click Erase, give it a name, choose exFAT for sharing with Windows or APFS for Mac only, and GUID Partition Map as the scheme.
8. Copy your files back and test the drive on the Windows PC.
9. From now on, always eject before unplugging, especially with exFAT.

And with Apple?

If you stay within Apple, this whole story gets a lot shorter. An external APFS drive works on any recent Mac without fuss. Time Machine wants APFS, offers to format the drive for you and then just gets on with it every hour. Encryption is a tick box. An iPhone or iPad with USB-C can open an APFS or exFAT drive in the Files app as well. That’s convenient, but it also means an APFS drive is a closed box outside Apple’s world. As soon as there’s a Windows PC in your life, you end up with exFAT and its drawbacks, or with paid software. It’s not a disaster, but it’s something to choose deliberately rather than discover when you’re in a hurry.

This whitepaper describes the situation in October 2026, with macOS Golden Gate (macOS 27), iOS 27 and Windows 11. Prices and compatibility of third-party software can change, so always check the maker’s website before you buy.

This article is part of the Mac and the rest of the world series, where you’ll find every part in one place.