How to Unformat a Hard Drive on Windows and Recover Your Data

Can You Really Unformat a Hard Drive on Windows?

You can’t literally reverse a format and return a hard drive to its exact previous state with an “unformat” command. What you can do is recover data that remains on the drive.

Here’s what the most common scenarios look like:

Hard Drive Format on External vs Internal Drives

Recovery works a little differently depending on whether you formatted an external HDD, another internal drive, or your C: drive:

• External HDD: Disconnect it until you’re ready to recover the data. Connect it only to create a disk image, scan it, or recover files, and never save recovered files back to the same drive.
• Internal non-system HDD: If Windows boots from another physical disk, the formatted HDD can normally stay installed. Don’t write files or install applications on it. Install recovery software on the unaffected system drive and save recovered files elsewhere.
• Internal system drive (C:): If you actually formatted C:, the previous Windows installation will no longer boot. Don’t reinstall Windows before recovery, as this can overwrite recoverable data. Instead, connect the drive as a secondary disk to another computer or boot from a separate Windows/recovery environment. Recover your files to another physical drive.

How to Recover Data From a Formatted Hard Drive on Windows

If you don’t have a usable backup, data recovery software can scan the formatted hard drive for data that survived the format. The better recovery tools combine several approaches, such as file-system reconstruction, lost-partition detection, and signature-based scanning. How much they can recover depends on what information remains on the drive, so no application can guarantee recovery.

We recommend trying the following options:

Method 1: Disk Drill (Top-Rated and Easy to Use)

Disk Drill is one of the best options for data recovery, especially when you need to unformat a hard drive. It can scan formatted drives and partitions, use surviving file-system metadata, or reconstruct files by signature when that metadata is gone. Its signature scan recognizes nearly 400 file formats.

It supports FAT16/FAT32, exFAT, NTFS/NTFS5, ReFS, HFS/HFS+, APFS, EXT2/3/4, BTRFS, and RAW storage. It can also create and scan disk images, which we recommend if the drive showed signs of instability before the format.

Here’s how to unformat a hard drive with Disk Drill:

1. Download and install Disk Drill on a drive separate from the one that was formatted. If your system drive is the one to be unformatted, remove it from its system and connect it to another computer as an external storage device.
2. (Optional) Open Disk Drill and select Byte-to-byte Backup from the left sidebar.
3. (Optional) Select the formatted hard drive from the list and click Create backup.
4. (Optional) Choose a location on a different physical drive with enough free space to store the disk image. Wait for Disk Drill to finish creating the image. You can then scan this image instead of the original formatted drive.
5. Attach the created disk image or select the formatted drive. Click Search for lost data.
6. If prompted to choose a scan type, select Universal Scan to recover all types of files. If the drive mainly contains unedited photos and videos from cameras or drones, you can also try Advanced Camera Recovery.
7. Click Review found items to see what Disk Drill has found. You can preview files as Disk Drill finds them in real-time, or wait to see everything.
8. Review all relevant result groups and use file type, size, date, path, recovery status, and previews to find the files you need. Don’t rely only on original file names or folders, since formatting may have removed that metadata. Preview important files where possible, select everything you want to restore, and click Recover.
9. Choose where you want to save the recovered files. Select a folder on a different, healthy drive to avoid overwriting data on the formatted drive, then click Next.

Method 2: Windows File Recovery (Free Microsoft Command-Line Option)

If you’re looking for a completely free solution, Windows File Recovery is Microsoft’s own data recovery utility for Windows. It can scan a formatted drive and recover found files to another storage device.

The main downside is that Windows File Recovery is entirely command-line based, so it’s less convenient than recovery tools with a graphical interface. Still, it’s a useful option if Windows detects your formatted drive, you don’t have a usable backup, and you’re comfortable with Terminal or Command Prompt.

Here’s how to use it:

1. Connect another physical drive with enough free space for the recovered files.
2. Install Windows File Recovery from the Microsoft Store.
3. Open the tool with administrator permissions.
4. Check the drive letters for your formatted source drive and recovery destination. They must be different drives.
5. Run Extensive mode, because formatting may remove or damage the file system information that simpler recovery modes rely on. Extensive mode performs a broader scan and is the mode Microsoft recommends for formatted drives. For example: winfr D: E: /extensive. Here, D: is the formatted drive and E: is the drive where recovered files will be saved.
6. To search only for specific file types, add /n filters. For example: winfr D: E: /extensive /n *.jpg /n *.docx
7. Press Y when Windows File Recovery asks you to confirm the scan.
8. Once recovery finishes, open the Recovery_<date and time> folder created on the destination drive and review your files.

Don’t copy recovered files back to the formatted source drive until you’ve finished the recovery and verified the results.

When Professional Recovery Is Needed for a Formatted HDD

If you accidentally quick-formatted your hard drive and it’s otherwise healthy, you most likely won’t need to send it to a data recovery lab. Data recovery software is usually the first option people try, and in most cases, it’s all you need. However, there are some situations where professional recovery is the safer option.

We recommend contacting a professional data recovery service if:

• Your HDD clicks, doesn’t spin correctly, or makes unusual noises.
• It keeps disconnecting or disappears from Disk Management.
• Windows shows the wrong drive capacity.
• You get severe I/O errors, or the drive freezes when you try to read it.
• The HDD was dropped, hit, or otherwise physically damaged.
• The drive was already unstable before you formatted it.
• You can’t create a stable disk image because the drive keeps failing or disconnecting.
• The drive was encrypted, and the format damaged encryption or volume metadata.
• The files are too valuable to risk DIY attempts.

If your HDD shows signs of physical failure, don’t keep scanning it with recovery software. A scan forces the drive to read large amounts of data, which can put additional stress on failing mechanical parts and make the damage worse. Data recovery labs have access to specialized hardware-level tools, and if the HDD has mechanical damage, technicians can open and work on it in a cleanroom environment.

Professional recovery can be costly, and we recommend asking for an estimate first. If the lab offers “no data, no fee,” check the terms carefully, since diagnostic fees, shipping costs, or minimum-recovery conditions may still apply.