Data recovery techniques for windows operating system are based on restoration and recovery algorithms, which utilize the data structure tables in the Master File Table (MFT) and File system tables as the base. Recursive search for zeros and ones within these structures are performed with standard architecture as the reference. The system sets right all the issues wherever the failed structure varies from the standard one. This sort of algorithm works as long as the bugs are logical in nature. Once the physical damages to sectors and tracks are faced by the system, it stops its operations and starts displaying error messages. Bad sectors are examples for this type of error messages. In such cases the technician will start using the hardware tool for fixing the physical damages. A fine combination of these two methods will be able to restore the disk drive back into accessible condition and enable the technician to recover maximum possible data from the disk.
The above scenario is applicable when the boot sector in the hard drive has collapsed and the OS has crashed. Our data recovery procedures can address various other issues wherein the disk drive has suffered critical damages due to mechanical failure, electrical short circuits, PCB component failure and other hardware bugs.
Hard disk layer analysis
The data recovery technician uses various types of disk layer analysis for determining the exact nature of damages suffered by the platters in the HDD. Similar logic and apparatus can also be used for probing Solid state drives, Flash cards, USB devices like pen drive and other storage units. The Enterprise hardware tools are compatible with SATA native functions like PHY-error levels zero, one and three for board errors also. Most of the disks from Western Digital, Samsung, Seagate, Maxtor, Toshiba, Hitachi and other brands are covered by these hardware scanning and repairing tools.
One of the leading vendors of hardware repair tools is PC3000. This device has various functional modes of processing the scanning for Serial ATA and IDE drives. Some of the modes are UDMA and PIO for both the types of drives. The power adapter board offers protection to the disk drive from high voltages and current fluctuations. The onboard OEM software can handle all the activities like Disk port control, status report, initiation and halting of processes etc.
The hardware apparatus kit from PC3000 consists of many tools for unlocking ATCS probing, power cables, adapters for various brands like Quantum, Samsung, Seagate and others and the OEM software. The express controller board is the main platform on which the disk drives are scanned and repaired.
Data cables are from the main controller board are connected through the various adapters to the failed disk drive. USB terminal adapter is directly connected through the port. Power supply cable from the mains is made to pass though the main controller board of PC3000 tool and connected to the drive.
The technician will usually load the PC3000 express software onto a desk top computer (with specifically designed hardware components for PC3000 tools) which controls the scanning and repair operations performed on the main controller board. PC3000UDMA is used for complete repairing of physical damages to the HDD while Data-Extractor-UDMA is used for recovering data from the failed HDD.
Another option for connecting the main PC3000 main controller board is available with custom built PC3000-portable-hardware device in which the OEM software is installed. The device has a touch screen user interface for the hardware technician to perform diagnosis and repair operations on the failed Drive.
PC3000 Software features
The PC3000 OEM software has an interface specifically designed for operating technicians with plenty of features for diagnosing multiple types of hardware issues, virtual drive creation, file system scanning, sector mapping, error logs and deep drive scanning tools. Diagnostic results can be used for head and platter replacement, spindle repair and replacement, head alignment setting and replacement and other mechanical operations can be performed within this OEM software application. The tool is highly effective in scanning the HDD in many modes.
- Factory reset reading method ignores all the File systems, partitions and other logical layers of the drive and goes straight into the low level formatted mode. The system is able to scan and detect all the possible defects in the current state with respect to the factory level settings of the HDD.
- Forward and reverse reading modes make it possible for the system to recognize the sector level faults and over written zeros and ones in the data clusters, especially in the master file table and file systems. In this mode the system is able to recognize all the missing links between multiple logical partitions, files and folders. This data will be stored in the log file which will be used during the file system repair process.
- Raw salvage mode helps the combination of software and hardware tools to extract data from the completely damaged file systems accurately and safely.
- Quick-diagnosis mode is able to restore damaged partitions. Data from all the logical partitions is restored from the root sector in the zero-platter till the last sector of the nth platter in the disk drive.
- Sector mapping mode helps in diagnosing and resetting the file system related data and Meta data about files and folders within the disk drive.
- Multiple-scanning-mode is helpful for creating logs needed in restoring bitwise data from partitions; file systems and data storage areas.
Operating system compatibility
The scanning and repair tool is capable of working with Windows servers, 7, 8 and Vista. Since the user interface in the OEM software application is technically complex in nature, it is said to be more suited for professional data recovery experts and not recommended for novice users, who may not be familiar with technical data displayed. Data recovery tools of this type are available from other manufacturers also.
Once the technician recovers the data and restores it into a secondary storage medium, you need to check the files for changes in their names, since many of them will be renamed with a combination of alphanumeric characters during recovery.