Hard Disk Data Recovery

Hard Disk Data Recovery

1. recover accidentally formatted Hard Disk Data

In the high DOS version, the formatting operation format creates disk information for restoring formatting by default. In fact, the DOS Boot Sector of the disk is used, all contents of the FAT partition table and directory table are copied to the last several sectors of the disk (because the following sectors are rarely used), and the content in the data area is not changed at all. We all know that there is a very good tool unformat in the DOS era, which can restore the disk cleared by the format command. If you mistakenly formatted a partition using the format command in DOS, you can try this command. However, unformat can only recover the local hard disk and software drive, but not the network drive. In addition to the anti-Formatting Function above, the unformat command can also repair and create a corrupt Partition Table on the hard drive.

However, at present, unformat seems to be a little "Powerless", and it is a bit outdated to use it to restore the formatted partition method. We can use a variety of restoration software for data recovery, for example, you can use restoration software such as easyrecovery 6.0 and finaldata2.0 to conveniently recover data. In addition, DOS also provides a miror command to record the information of the current disk for formatting or restoration after deletion. This method is also effective.

2. Zero track damage to data recovery

The primary Boot Record area (MBR) of the hard disk is on the zero track. MBR is located in the zero track, zero cylinder, and one sector of the hard disk. The Main Boot Program of the hard disk and the partition table of the hard disk are stored. In the 512-byte hard drive primary Boot Record sector, 446 bytes belong to the hard drive primary boot program, 64 bytes belong to the hard drive partition table (DPT), and two bytes (55 aa) belong to the partition end mark. If the zero track is damaged, the Master Boot Program and partition table information of the hard disk will be seriously damaged, resulting in hard disk boot failure. 0 track damage judgment: The system can pass self-check, but when starting, the partition is lost or the C directory is lost, the hard disk appears regular "squeaking ...... Run Scandisk to scan the drive C. A red "B" appears in the first cluster, or the hard disk cannot be found on the fdisk, And the DM stops on the 0 track, in this case, the zero track is damaged!

Zero track damage is one of the hard disk bad tracks, but its location is very important, so once damaged, it will have serious consequences. If the zero track is damaged, the current normal method cannot completely restore the data. Normally, the zero track is damaged to the hard disk. You can use the pctools de disk Editor (or diskman) to make the 0 track deflection a sector, use 1 track as the 0 track for use. However, the data can be restored by cluster through easyrecovery, but the data cannot be completely restored.

3. Data repair when the partition table is damaged

The sector where the hard drive's primary Boot Record (MBR) is located is also the focus of virus attacks. by damaging the DPT (partition table) in the primary Boot Sector, you can easily damage the hard drive partition information, damage data. Partition Table Corruption is caused by the destruction of partition data and the destruction of records. Therefore, we can use software for repair.

Generally, after a hard disk is partitioned, you need to back up a partition table to a floppy disk, a CD, or a mobile storage activity disk. In this regard, kv3000 series and rising, the well-known anti-virus software in China, provide a complete solution. However, although kv3000 also provides a solution for hard disks that do not have partition tables backed up, the success rate is much lower. In terms of restoring partitions, the Norton disk doctor NDD is an absolutely powerful tool that can automatically repair partition loss and other situations. It can rescue data in bad areas of a floppy disk and forcibly read the data and move it to other blank fan areas. In the case of a hard disk crash or exception, it may bring a glimmer of hope to users. After a problem occurs, start it with the boot disk, run NDD, and select diagnose for diagnosis. NDD scans the hard disk comprehensively. If there is an error, it will prompt you, and then you only need to select a repair project based on the software prompts, and these problems can be easily solved.

In addition, diskman, a familiar Chinese disk tool, has very practical functions in rebuilding partitioned tables. It is most appropriate to fix Partition Table damage. If the hard disk partition table is seriously damaged by the partition adjustment software (or virus), it will inevitably cause serious consequences of the hard disk and system paralysis. diskman can re-create the partition table through the undamaged Partition Boot Record information. If you select "recreate table sharding" in the toolbar of the menu, diskman searches for and recreates the partition. During use, diskman first searches for the hidden sector where the 0-cylinder 0 head starts from the 2-sector, and finds the partition table that has been moved by viruses. Search for the first sector of each head. The entire search process is carried out by means of "automatic" or "interaction. Automatically retains each detected partition, which is applicable to most cases. The interaction mode prompts you whether to retain each partition. When an incorrect Partition Table is faulty, we can use the interactive mode to re-search.

However, the rebuilding of the partition table cannot ensure that the hard disk partition table is restored. So remember to protect your hard disk if you want to protect your hard disk! To avoid hardware damage and virus intrusion as much as possible, you must back up the partition table. If no backup is made, download a diskgen software and select backup partition table in the tool options, generally, the data is backed up to the drive by default. If you do not have a drive, you need to change the path and output it to the hard drive directory. Then you should burn the backup file to a CD or copy it to a USB flash disk. Do not put it on the hard disk. This is just like the effect of no backup!

4. Data Recovery after deletion by mistake

During computer use, the most common data recovery is the data recovery after deletion by mistake. However, remember not to write information to the partition or disk, because the deleted files are most likely to be restored. In fact, after the hard disk partition is deleted using fdisk, the data on the hard disk disappears completely. If the data is not formatted, the hard disk will display an invalid drive. If you understand how fdisk works, you will know that fdisk only rewrites the content in the primary Boot Sector of the hard disk (0 sides, 0 sectors, 1 sectors. Specifically, the partition table information of the hard disk is deleted, and the data of any partition in the hard disk is not changed. Because the deletion and formatting operations do not actually touch the data part of the file, this provides a possibility for file recovery. We only need to use some anti-deletion software (it works by comparing the partition table to restore files), users can easily achieve the purpose of file recovery. At the same time, the mistaken formatting method is basically the same as the accidental deletion restoration method, as long as the partition hard disk is not disrupted using the fdisk command (use the fdisk command to partition hard disks within 40 GB, it is very convenient and practical. There are all boot disks, and there is no problem with the motherboard support). The cluster occupied by the files to be restored is not occupied by other files. In this way, most of the data before formatting can still be recovered. In addition, if your windows system can still be used normally, the simplest restoration method is to use the Windows easyrecovery software, which has a powerful function to restore hard disk data, not only can files cleared from the recycle bin be restored, but also files in the formatted fat16, FAT32, or NTFS partition be restored.

The software is easy to use. After decompression and installation, run easyrecovery and the main interface is displayed. Four functional buttons on the left and two software support buttons, disk diagnostics can help us test potential hardware faults, monitor and report potential drive failures, View Drive space usage details, IDE Hard Drive jumper settings, analyze file structures, and create bootable diagnostic Disks. In addition, the data recovery options provided by the six function buttons are crucial for the hard disk data recovery we need. easyrecovery professional provides a variety of data recovery options. Including: use advanced options to customize data recovery, search for and restore deleted files, restore files from a formatted volume, and restore any file system structure information. This software also saves the data recovery progress. and create a bootable emergency boot floppy disk.

In practice, we will select the advanced option custom data recovery function for data recovery. After scanning, the system will display the disk drive information. Here we select the hard disk partition C disk for data recovery, as prompted, after you click "Next", the software easyrecovery professional will automatically scan the partition, and all detailed file information will be displayed, including existing and deleted files. Next, select the file you want to restore and select "Next" To Go To The selection target location screen. After a while, easyrecovery will successfully retrieve the lost file, click "cancel" to exit the tool.

Easyrecovery (available row 100%)
Easyrecovery pro v6.04 in Chinese
Address: (there is a Chinese patch in it)
Http://www.crsky.com/soft/899.html
A powerful hard disk data recovery tool. It can help you recover lost data and reconstruct the file system. Easyrecovery will not write anything to your original drive. It mainly re-creates a file partition table in the memory so that data can be securely transmitted to other drives. You can recover data from a hard disk that is damaged by a virus or formatted. The software can restore hard disks larger than 8.4 GB. Supports long file names. Damaged hard disks can be recovered like lost boot records, BIOS parameter data blocks, partition tables, fat tables, and boot areas.

Finaldata
Finaldata v2.01.1028 Enterprise Edition
Http://www.crsky.com/soft/963.html
Delete a file in windows. Only the directory information is deleted from fat or MFT (NTFs. This means that the file data remains on your disk. Therefore, this file can be recovered technically. Finaldata uses this mechanism to restore lost data, which is no exception after the recycle bin is cleared. In addition, finaldata can be easily recovered from formatted files and files damaged by viruses. In extreme cases, if the directory structure is partially damaged, it can be recovered as long as the data is still stored on the hard disk.
Easyrecovery is a powerful hard disk data recovery tool that helps you recover lost data and reconstruct a file system.