EaseUS Data Recovery Wizard

There are free and paid versions of the software on both Windows and macOS.[10][11]

On most filesystems, file deletion typically does not erase the data itself but simply marks the file has having been deleted.[3] Consequently, software like EaseUS can, under some circumstances, recover deleted files from unallocated drive space. For example, Al-Sabaawi et. al. (2019) showed that EaseUS can carve files from the LOST.DIR on an Android operating system.[7] This is, in part, because the files' data resides on the drive as fragments.

EaseUS scans drives for deleted files in two different ways: (1) file directory and (2) storage content. The file directory method retrieves information about the deleted file from the filesystem.[3] Typically, NTFS keeps a record of files, even those that have been deleted and this information is used to recover a (deleted) file. The storage content method performs file carving to look for patterns in unallocated sectors in the hope that a continuous run of sectors will match a pattern. The latter method can recover files but it does not recover the file system metadata associated with the file, such as the file name, modification date or directory structure.[13][14][15] More importantly, the second method is less effective if the files on the drive were fragmented prior to deletion or are simply plaintext.[15]

EaseUS recovery of formatted partitions uses a different method from above. Instead of using file carving, the software likely reads from the backup volume boot record to obtain the lost partition information.[15] A successful restore of the formatted partition also restores the associated metadata and file directory structure. Partition recovery is not certain. For example, an experiment by Nordvik et. al. (2020)[15] did not successfully recover an ext4 partition that was reformatted with the NTFS filesystem but were able to recover an NTFS partition reformatted with the ext4 filesystem.

• TestDisk
• EaseUS Partition Master