How to Recover Data from a Formatted Hard Drive on Mac

Formatting a drive feels final, like flipping a switch that wipes everything. In most cases, it isn't. A standard format mostly resets the drive's index of where files live — it doesn't scrub the actual file data off the platters or flash. That's why recovering a formatted drive is so often possible, whether you erased it by accident, reformatted an external drive without realizing what was on it, or wiped something you later needed back. This guide shows you exactly how.

Not all formats are equal, and the difference decides your odds.

A quick format (the default in Disk Utility's "Erase") rebuilds the filesystem structures — the catalog of what's where — but leaves the underlying file data sitting on the drive untouched. To the Finder the drive looks empty, because the index is fresh, but the bytes of your old files are still physically present until something writes over them. This is the highly recoverable case, and it's what most people have done.

A full or secure erase is different. Disk Utility's security options (and tools that overwrite every block) deliberately write zeros or random data across the entire drive, destroying the old data on purpose. If you ran a secure erase with multiple passes, the data is genuinely gone and not recoverable. So the first question to ask is: was it a quick erase (recoverable) or a secure/multi-pass erase (not)? If you just clicked "Erase" with the default settings, you almost certainly did a quick format — good news.

Because a quick format leaves your data in place but marked as free space, every new write to the drive risks overwriting it. So stop using the formatted drive immediately. Don't copy files onto it, don't reinstall an OS to it, don't let it start filling with new data. If it's an external drive, unmount it and set it aside until you're ready to scan. The emptier and more untouched it stays since the format, the more you'll get back.

Because a format wipes the filesystem's index, a quick scan that relies on filesystem records often won't find much on a formatted drive. The right tool here is a deep scan, which ignores the filesystem entirely and reads the raw disk blocks, scanning for the byte-pattern signatures that mark the start of known file types and carving each file out of the surrounding data. This is exactly the technique formatted-drive recovery depends on, because it doesn't need the old filesystem to exist.

Download DataRecover Pro and run a free scan — installed to a different drive than the formatted one. Its deep scan recognizes 47+ formats by signature, including documents, photos, MP4 and MOV video, audio, archives, and camera RAW files, so a single pass catches the mix of file types a real drive holds. One trade-off to expect: because the filesystem index is gone, carved files come back without their original names and folder structure. That's normal for any deep scan, and the preview helps you identify them.

Formatted-drive recovery isn't limited to native Mac filesystems. External drives, USB sticks, and SD cards are frequently formatted as exFAT (to share between Mac and Windows) or NTFS (Windows drives you've plugged into your Mac), and DataRecover Pro reads all of them — APFS, HFS+, NTFS, exFAT, and FAT32. So whether you reformatted a Mac-native drive or wiped a cross-platform external, the same deep-scan approach applies. If your drive is specifically exFAT, here's a focused walkthrough on exFAT drive recovery on a Mac, and there's a dedicated guide for recovering a formatted external drive on a Mac if that's your exact case.

Don't pay before you know what's recoverable. DataRecover Pro's scan and preview are free, with no account, so after the deep scan you can browse the results with thumbnails, file metadata, macOS Quick Look, and a per-file confidence score. Since formatted files come back without names, the visual preview is how you find the specific photos, videos, and documents you care about and confirm they're intact before unlocking recovery.

Use the confidence scores to separate clean recoveries from partial ones, and prioritize accordingly. This step turns a leap of faith into a confirmed result — you see your files before you commit.

Always recover formatted-drive data to a different drive than the source. Saving recovered files back onto the drive you're carving from would write over the very data you're trying to extract — the single most common way to ruin a formatted-drive recovery. Recover to a separate external drive or another volume.

Finally, files carved from a formatted or partially overwritten drive sometimes come back corrupted — a photo that won't open, a video that won't play. DataRecover Pro's three-tier repair engine rebuilds corrupted photos (including RAW), video, and documents so they actually open, which recovery-only tools don't do. For every other loss scenario beyond formatting, the complete Mac data recovery guide covers the full picture.