The previous file table will be partially or completely overwritten,ĭestroying information such as filenames, folder structure and the physical location of the data, but the data will still be there. When a quick format is performed, the system will create a new file table to replace the existing FAT or MFT. When you format a disk, one of two processes will unfold. While there may be some information about the file and folder structure located elsewhere on the disk, the bulk of this type of information is stored in the FAT or MFT.
The file tables for these systems are called the File Allocation Table (FAT) and Master File Table (MFT), respectively. For Windows, there are two supported file systems: FAT and NTFS. On a disk, there is a table that stores information about files, such as filenames, folder paths, creation and modification timestamps and, most importantly, where the actual file content is located on the disk and where it begins and ends. This is similar to an index or table of contents at the beginning or end of a book.
To use disk space efficiently, the information about the file and file's contents are stored on the disk separately. To understand why, let us briefly discuss how files are stored on disks, how computers format disks, and how to "unformat" such a disk to recover the files on it. In fact, R-Studio, a powerfulĭata recovery tool, can easily recover important data from most formatted disks. But the notion that formatting a disk irrevocably eradicates all data on the disk is not always accurate. The common conception of formatted disks is that once a format operation has been run, a disk is a "blank slate," with absolutely no residual data left behind.
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