Read a Mac APFS or HFS+ Drive on Android Without a Mac

Plug a Mac-formatted external drive into an Android phone and you get a “corrupt or unsupported” notification, an offer to format it, or nothing at all. The drive is fine. Android just cannot read the format.

Why Android cannot read it

macOS formats nearly every drive it touches as APFS - the standard since High Sierra in 2017 - or, on older disks and Time Machine volumes, HFS+, also called Mac OS Extended.

Android ships drivers for FAT32 and exFAT, and nothing else. No NTFS, no APFS, no HFS+. When it meets a filesystem it has no driver for, it cannot distinguish that from a damaged drive, so it reports corruption and offers to format.

Do not accept that offer. Formatting the drive erases the Mac volume and everything on it, to solve a problem that is only a missing driver.

Reading a working Mac drive

APFS Reader carries its own APFS and HFS+ engines and its own USB mass-storage stack, so it reads the drive itself instead of waiting for Android to mount it. No root, no Mac, no computer.

You get the drive as a normal browsable folder: photos and videos with thumbnails, video and audio that play from the drive, and files you can copy to the phone. It also registers as a storage location in Android’s file picker, so the drive shows up inside Gmail, Drive, WhatsApp and anything else that attaches files.

APFS and HFS+ volumes are read-only - Apple’s formats are complex enough that writing to them safely is a much larger promise than reading them, and the app does not make a promise it cannot keep. exFAT and FAT32 volumes on the same drive read and write normally.

FileVault drives

An encrypted Mac drive opens with its volume password or its personal recovery key. As with BitLocker, the credential is used on the device to decrypt as it reads, held in memory for that session only, never transmitted and never written to disk.

Recovering deleted files from a Mac drive

If files were deleted from the drive, or it has stopped mounting even on a Mac, that is a different job - use USB Data Recovery, which scans APFS and HFS+ as well as the Windows formats.

Two things are worth knowing about how these formats behave when files are deleted, because they differ from Windows formats in ways that affect what you get back.

APFS keeps recent history. It is a copy-on-write filesystem: rather than overwriting a record in place, it writes a new version elsewhere and updates a pointer. Older versions of the filesystem’s structures therefore survive for a while, and a quick scan can read back through them to find files as they were before deletion.

The limit is that this history is finite and gets recycled as the drive is used. Scan sooner rather than later, and know that a Mac which reformats the drive erases those records for good.

HFS+ keeps deleted records in its journal. HFS+ zeroes the free space in its catalogue rather than leaving old entries lying around, so the usual “deleted entries survive in place” assumption does not hold. What does survive is the journal - the write-ahead log HFS+ keeps to stay consistent through a crash - which still holds the catalogue records as they were before the delete. That is where recovery on HFS+ actually comes from.

And the deep scan works regardless, on either format, because it ignores the filesystem and carves from raw contents. That is the fallback if the drive was reformatted or the volume is too damaged to parse.

Which app do I need?

The drive works and you want your files - APFS Reader.
The drive works but it is a Windows drive (NTFS, or BitLocker To Go) - NTFS Reader.
Files were deleted, the drive was formatted, or nothing will mount it - USB Data Recovery.

What you need to connect it

An Android phone or tablet, 8.0 or newer, with USB OTG support. A USB-C drive plugs straight in; USB-A needs an OTG adapter. Bus-powered external hard disks

which is most Mac desktop drives - frequently need a powered hub, because a phone supplies far less current than a Mac does. A drive that spins up, is detected, then disconnects is usually short of power rather than faulty.