When the computer is turned on, the Windows interface cannot be entered , and the hard disk cannot be recognized normally even through the system startup disk. When starting the system, " Non-System disk or disk error , replace disk and press a key to reboot " often appears (non-system disk or disk error ). ), " Error Loading Operating System " (loading DOS boot record error) or " No ROM Basic , System Halted " (can not enter ROM Basic , the system stops responding) and other prompt information. The reason for these phenomena is that the hard disk partition table is faulty.
So how did the partition table fail? Overall, there are three main reasons:
1. Virus
Partition table corruption caused by viruses is one of the most typical failures. For example, in addition to attacking the BIOS of the motherboard, the variant of the typical CIH virus will also destroy the partition table, and there are many viruses in the boot area that will also destroy the partition table.
2. Environment
Today's Windows 2000/XP supports the NTFS file format, and the program uses this file format to install the system by default. If the hard disk is partitioned or divided into NTFS partitions accidentally power off or crash, it is likely to cause Partition table corruption. Moreover, there are certain risks when using third-party partition software to adjust the partition capacity of the hard disk and convert the partition format. If the computer crashes or loses power, the partition table of the hard disk will fail, and all data in the hard disk may even be lost.
3. Operation
If multiple operating systems are installed on a hard disk at the same time, it may cause partition table failure during uninstallation . mistake. In addition, when deleting a partition, if the extended partition is not deleted first, but the primary partition is directly deleted, there will also be a fault that the volume label of the partition cannot be read out correctly.
In addition, we often encounter the loss of the partition table in the process of daily use of the hard disk. The main reasons for this are as follows:
1, wrong ghost
When reinstalling the system or restoring the system, after selecting the recovery partition as the recovery disk, the entire hard disk becomes a C disk, and all other disks are lost.
2. Software conflict
When using a third-party tool to merge partitions, the partition operation is forcibly interrupted due to the exclusivity of other software to the hard disk or the permissions, and the partition table will be confused or rewritten, resulting in the loss of the partition table.
3. Power off
When using a computer normally, a sudden power failure will cause great damage to the hard disk, such as data disorder, partition disorder or bad sectors of the hard disk, etc., thus causing the loss of the partition table.
4. Hot swap
After the mobile hard disk is used, when it is hot-plugged from the computer, the sudden change of the current will cause the data structure to change, resulting in the loss of the partition table or some other data loss phenomena.
The failure of the hard disk partition table will cause serious consequences such as the hard disk cannot be used normally, the system will crash, and the data will be lost and damaged. When the hard disk partition data is lost, we can use the Mini Rabbit data recovery tool to restore it. Just be careful when restoring, you cannot restore the recovered data. The data is directly stored in the faulty hard disk, otherwise it is easy to overwrite the data.