The information in a file, for example, doesn’t actually get removed when it is deleted. It can be brought back with data recovery freeware. The file system simply marks the areas that contained the file as free space that the operating system can overwrite with new data.
In other words the file is invisible to the operating system and user.
So a data recovery program works by exploiting this fact that, while the directions to a file are missing, the actual file is not. So long as that physical space has not been overwritten by something new already.
There are many data recovery freeware on the Internet that can help you recover accidentally deleted files – recover or “undelete” files on your computer.
Files you have deleted and then recently emptied from your Recycle Bin are often still present on your hard drive (or USB drive, or media card, etc.) and can be recovered using data recovery programs.
Undelete files you thought were gone forever with any one of these free data recovery tools:
Recuva is very easy to use but has many optional advanced features as well.
This program can recover files from hard drives, external drives (USB drives, etc.), BD/DVD/CD discs, and memory cards and it can even undelete files from your iPod.
Recuva will undelete files in Windows 8 & 8.1, 7, Vista, XP, Server 2008/2003, and older Windows versions like 2000, NT, ME and 98. 64-bit Windows versions are also supported.
Undeleting a file with Recuva is as easy as deleting one and it is recommended for beginners.
2. Pandora Recovery
Pandora Recovery is another excellent free data recovery software program. It’s super easy to use and has the best wizard to help you undelete files.
A more advanced “Surface Scan” is available in Pandora Recovery that should recover more files than the standard search as long as they are of a popular format.
Pandora Recovery will undelete files from hard drives, memory cards, etc.
Pandora Recovery lists support for Windows Vista, XP, Server 2003, and 2000, but also works under Windows 7 as well.
3. Wise Data Recovery
Wise Data Recovery is a free data recovery program that’s really simple to use.
This program can scan various USB devices like memory cards and other removal devices.
An instant search function makes it really quick and easy to search for deleted files that Wise Data Recovery has found. A Recoverability column shows the likelihood of a file being recovered with Good, Poor, Very Poor, or Lost. You just use a right-click to restore a file.
Wise Data Recovery works with Windows 8, 7, Vista, and XP, including the 64-bit versions of each. There’s also a portable version available from the PortableApps website.