How to read and write ext4 drives on a Mac

Updated August 2026 · applies to macOS 13–15, Apple Silicon

Plug a Linux-formatted drive into a Mac and Finder offers to initialize it — macOS has no ext4 support at all, not even read-only. If the disk holds a server backup, a Raspberry Pi root partition or a retro console's game library, that's a problem. These are your real options in 2026, from DIY to one-click.

Why macOS can't read ext4

Apple ships drivers for APFS, HFS+, FAT32 and exFAT, plus read-only NTFS. Linux filesystems were never included, and since macOS Catalina third-party kernel extensions (kexts) require booting into Recovery Mode and lowering your Mac's security policy — which is why the classic answer, macFUSE + ext4fuse, has become painful on Apple Silicon.

Option 1: FUSE-T + fuse2fs (no kernel extension)

FUSE-T is a kext-less FUSE implementation that works over a local NFS loopback, and fuse2fs is the official userspace mount tool from e2fsprogs — the same project that maintains ext4 itself. Together they give you full read/write without touching your Mac's security. The catch: Homebrew's e2fsprogs bottle doesn't include fuse2fs, so you must build it from source against the FUSE-T headers (or use a tool that bundles it pre-built), then mount from the terminal as root:

sudo fuse2fs /dev/disk4s2 /tmp/mnt -o rw

It works well — this is exactly the stack Omnimount automates, with a signed build, a menu bar UI and a privileged helper so you never type a password per mount.

Option 2: macFUSE + ext4fuse (kernel extension)

The traditional route. It requires enabling reduced security from Recovery Mode on Apple Silicon, and ext4fuse is read-only and largely unmaintained. Only worth it if you already run macFUSE for something else.

Option 3: a Linux virtual machine

UTM or Lima with the disk passed through. Free and reliable, but heavy: you boot an entire OS to copy files, USB passthrough is fiddly, and nothing integrates with Finder.

Option 4: over the network

If the drive lives in a working Linux machine, share it with Samba/SFTP and skip local mounting entirely. Useless for loose disks and SD cards, though.

Writing safely

• Always eject before unplugging — ext4 journals metadata, but yanking a writing disk still risks data.
• If a disk was pulled mid-write, run e2fsck before mounting read-write again.
• Editing a bootable Linux system partition? Back it up first (see our cloning guide).