SQL database File Repair/UF/Kingdee/housekeeper/speed up/SECOP database recovery hard Drive recovery

The failure condition of the hard disk can be divided into the following categories:

1. Control circuit failure

Most of the external circuit of the problem is the power chip or spindle drive chip caused by the burn, due to hard disk circuit board quality problems, design defects, mains fluctuations, sudden power outages, chip aging or poor heat dissipation, electrostatic and other causes of the chip burned, breakdown, serious will also affect the damage of the head chip. This situation can basically be solved by the repair of the external circuit.

2. Disk Bad path

If the drive head is read too long or unreadable in one sector on the platter, this sector may be a bad sector, which is often called a bad path.

The bad way generally shows: can't start, often crashes, read and write difficulties and so on.

3. Missing or damaged firmware information

Firmware is used to control the drive itself operation of the instruction set, is the hard disk read and write parameters, it is the same as the hard disk files are stored on the disk disc, the difference is that it exists in the location is 0 outside the area, often referred to as negative tracks. Similarly, as with the file, due to sudden power outages and negative tracks, and so on, can also cause firmware information loss or corruption, which causes the hard disk to be recognized or mistaken, so that the data can not read properly. In this case, the PC3000, HRT and other disk underlying tools for the firmware area can be rewritten or modified to read the data normally. However, the problem of the firmware area of the hard disk in all hardware failures accounted for the proportion is not very large, and not every piece of firmware damaged disk can be restored in this way, you need to depend on the hard disk specific brand, model, batch and other relevant information to determine the recovery method used.

4. Head damage, offset, disk abnormal sound

Hard drive after the "click, click" Sound, in the motherboard CMOS can not detect. This situation is mostly due to the sound of the head damage can not be completed initialization and swing out of the voice, and very few are due to the firmware damage so that the head in the specified position can not read the correct information and multiple positioning caused by.

If the hard drive has an abnormal sound, you should turn off the power immediately. Do not blindly repeated power to try to avoid deformation of the magnetic head on the disk surface formation scratches, resulting in irreparable loss. In this case, the disk cavity must be opened in a clean room, and a good set of working heads can be replaced to restore the data on the original disk intact. The work environment and engineer manual requirements are very high.

5. Hard Drive decryption

Because some data is more important and sensitive, users need to encrypt it. Most laptops now have the ability to encrypt hard drives directly, and some third-party software provides the capability to make the hard drive unusable without entering the correct password to ensure overall data security. Once the password is lost or the system crashes, even the user cannot read the required data himself! At this time need to use some professional tools and special means to decrypt the hard disk to read the normal data, but now encryption means a variety of ways, encryption is also emerging, not every kind of encryption can be solved, but also need constant analysis and try. It is recommended that users develop good backup habits and make regular backups of important data.

6. Damage to spindle motor

Since most of the current hard disk to improve read and write speed of the disk spindle motor speed increased, manufacturers are generally using liquid bearings to increase the service life of the spindle motor, but in the course of use there are still some hard disk disc does not turn, speed decline or instability, excessive noise, read instability and other failure phenomena. In this case, the spindle motor of the hard drive must be repaired to successfully export the original data.

7. Hard Drive broken

With the popularization of mobile hard disk, in the use and movement of the phenomenon dropped on the ground is very common, this high-intensity impact and vibration may cause the head offset, deformation, spindle motor bearing eccentricity, deformation, disc deformation and so on. In this case, it is recommended that users do not blindly repeated power to try to avoid deformation of the magnetic head on the disc formation of serious scratches, resulting in irreparable damage. In this case, it is necessary to restore the open data in the clean room, replace a good set of normal working heads or motors to restore the data on the original disk completely. Very high demands on the working environment and the engineer's workmanship.

8. Irresistible damage to strong earthquakes, fires, floods, large currents caused by hard disk damage.

SQL database File Repair

1. Can repair SQL database log corruption of MDF data file

2. Can repair the deleted form in SQL database

3. Recoverable database corruption due to bad drive path

4. Recoverable files that are suspect in database files

5. The library file cannot be opened due to some bad pages in the recoverable data file.

6. database file repair for various error prompts

7. Can repair the database after the log shrinkage or sudden power outage

8. Support for all SQL versions

9. Can recover multiple relational databases

10. Recoverable SQL database BKF backup file

11. Database recovery in case of malformed SQL Server database on disk array

SQL database File Repair/UF/Kingdee/housekeeper/speed up/SECOP database recovery hard Drive recovery