So if you have lost critically important information, you should contact a professional data recovery company. Although software that we are going to use does not perform any destructive actions (it will not write anything on the drive we recover the files from), attempts to perform any rescue operations on a drive with physical damage will worsen the situation, up to complete impossibility of recovering anything at all. ![]() And possibly you will not be able to determine nature of such a failure without special tools and skills. There is a certain probability that data loss has been caused by a physical failure of a drive. Only in certain cases low-level recovery can increase amount of salvaged information. After that recovery program can read selected files and folders in accordance with the file map and copy them to another media.Īccording to my experience, if your storage device is in good order, then all the recoverable information can be rescued using the tools described below. If this isn't enough for recovery, then special extrapolation methods may be used to complement scan results. This map describes relations between files and clusters, file names, sizes and other file system attributes - everything that was found during the scan process. These scan results can be used to build a map of file fragments and directory tree. Such programs usually scan the whole storage device and collect file system information. To recover your data you may want to use special data rescue software. ![]() It should be noted that programs like Windows ScanDisk tend to make everything even worse, since they delete file system structures (like MFT in NTFS), which they unable to interpret. For example if you have accidentally deleted 1GB of business data and then copied 50GB of family video onto the same logical drive, your chances to get original data back are very slim. In this case your chances to rescue the information depend on your luck and proportion between the lost and written data. you have formatted your drive and installed a new OS) it is generally assumed that complete recovery of the previous data is impossible. When data has been physically overwritten on a hard disk (e.g. So you need to locate that data on the storage device and read it properly. If you haven't copied or moved any new files over, then the old data is still physically exists, but all references to original files and folders in the file system now removed or corrupted. ![]() If your data was lost due to the user mistake, then I think we need no further explanation for this reason :) What to do? Unfortunately, on modern drives bad sectors can be found after a few weeks or even after a few days of use. Another possible reason is a partial damage to the disk surface (also known as bad sectors). They can appear after incorrect or unplanned system shutdown, software or hardware failures or as a result of virus activity. The most common reason for the faults of first type is errors in the partition table or in the file system structures. Or maybe you have accidentally deleted important files or installed Windows onto a partition where you stored family photos? Selecting wrong drive during the partition table creation is another common reason of data loss. So, you boot the PC and see that one of your logical drives has disappeared or even the whole partition marked as “unformatted”? Or the drive seems OK, but you missing some files and folders or getting “File cannot be opened” / “Wrong file format” errors?
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