What about partition table corruption

What about partition table corruption

Why does the partition table fail?

When the partition table is corrupted, the system often appears "Non-system disk or disk Error,replace Diskand press a key to reboot" (non-system disk or disk error), "Error Loading Operatin Gsystem "(Mount dos boot log error) or" No ROM Basic,system halted "(Cannot enter Rombasic, system stops responding) and so on prompts the information. So how does the partitioning table malfunction happen?

1, the virus causes the fault

Computer viruses are one of the most typical faults that cause partition table damage. For example, a variant of the typical CIH virus can damage the partition table in addition to the BIOS of the motherboard, and more than a few boot zone viruses can damage the partition table.

2, environmental problems caused

Today's Windows system 2000/XP is supported by the NTFS file format, and the program defaults to the file format to install the system, if the hard disk partition conversion or partition NTFS partitions accidentally power or panic, then very likely to cause partition table damage. And in the Pqmagic (Division magician), such as third-party zoning software to adjust the hard disk partition capacity, the transformation of the partition format is also a certain risk, if the crash or power loss will also cause the hard disk partition table failure, and may even lose all the data on the hard drive.

3. Improper operation

If you have multiple operating systems installed on a single hard drive, you may be able to cause a partitioned table failure at the time of uninstall, such as removing the Windows System 2000 kernel directly from a computer that has Windows 2000 and Windows System 98 installed, which can cause partition table errors. In addition, if you delete a partition without first deleting the extended partition, but deleting the primary partition directly, you may also receive a failure to correctly read the partition's label.

How to fix the partition table fault?

1. Killing virus

If it is due to the boot area of the virus caused by partition table failure, it can use KV3000, rising, Jinshan and other anti-virus software to boot the computer, and then in the DOS environment to the system virus killing operations. For example, when you start the computer with the KV3000 boot disk and enter the "kv3000/k" command for virus scanning, if you find a virus in the boot area, the program automatically cleans up and recommends a complete scan of the entire system to find out the hidden virus. In general, you can restore the normal use of your computer after you clean up the remaining viruses in the boot area.

Tip: Be sure to turn off the write protection of the floppy disk before booting the computer with a floppy disk, or it may cause a virus to infect the floppy disk.

2, with the FDISK command to repair

Fdisk is not just a partitioning program, he has a very handy recovery primary boot sector feature, and he only modifies the primary boot sector and does not write to other sectors, so it is certainly the best partition table repair tool for friends who are still using Windows 9x. When you repair the primary boot area with Fdisk, start the system with the Windows System 98 boot disk, and then enter the "FDISK/MBR" command at the prompt to overwrite the master boot area record.

Tip: the "fdisk/mbr" command simply restores the primary partition table and does not rebuild it, so it applies only to the primary boot zone record being damaged by the boot zone virus or the master Boot Record code loss, but the primary partition table is not corrupted. And this command does not apply to clear all boot viruses, so you need to be careful when using them.

3. Repair the boot record with fixmbr

In Windows system 2000/XP, we typically use some of the enhanced commands that are integrated with the Recovery Console, such as fixmbr to fix and replace the master boot record for the specified drive, fixboot to fix the boot sector that knows the drive, DiskPart can add or remove partitions on the hard drive, Expand can extract the missing files from the specified cab source file, listsvc can create a list of services and display the current startup status of the service, disable and enable are used to prohibit and allow a service or hardware device, and so on, and enter "Help" Commands can be viewed with detailed explanations of all control commands and orders.

For example, entering the "fixmbr" command allows the console to check the master boot record for the current system, and then, "Are you sure you want to write a new master boot record?" Then enter "Y" for confirmation, which completes the repair of the master boot record

4, change tool adjustment zoning

When deleting a partition or recreating a partition, if you encounter an unexpected cause of a panic or power outage, then using the original tool may not recognize the current hard disk partition table, you must replace the other partition table software to repair. For example, through the Fdisk partition accidentally panic, this time again through Fdisk can not be smoothly, can use pqmagic such as third-party zoning software to solve. In addition, we need to remind you that the partition table for the system's normal and stable operation of the impact is very large, under normal circumstances, the best not to use such as DM fast partition format software, otherwise it may lead to the later use of the process of frequent unexpected trouble.

5, through "Jiangmin HDD repair King" Repair

When a partitioned table is corrupted, the most common error message is: "Invalid partitiontable" (Invalid partition table). For partitioned table failure, can be repaired by "Jiangmin HDD repair King".

First on the Jiangmin company's website download "hdd Repair King" image file and "HD.exe" file, and then through the "HD.exe" to Jiangmin antivirus King 2003 of the key disk. Use this floppy disk to start the computer, enter "Jmhdfix" at the prompt and enter the main interface of the hard disk repair King.

Press the F2 key in the main interface to enter the "system test and Automatic Repair" interface, at which time the program will automatically detect the hard disk partition table, if the partition table is corrupted, the screen display:

Hard Disk Partition table-error!!!

Fix Hard Disk Partition Table or sector (y/n)?

Hard disk partition table error, repair hard disk partition table or c disk boot area? Press "Y" key to fix, press "N" key to exit.

When you press the "Y" key, the screen displays:

Insert a formatted diskette into drive A, pressed "Y" to save "error" Partition table floppy filename hdpt. VIR, "N" to Exitcontinue (y/n).

Please insert a floppy disk to make a backup of the bad boot area information, and its file name is Hdpt.vir. Insert diskette Press "Y" key to continue, press "N" key to exit.

After inserting a floppy disk and pressing the "Y" key, the screen displays:

Hard disk Partition table or boot sector fixed OK!!!

Fixing ...

Note: At this point, KV3000 is repairing the partition table on disk C and do not interrupt its operation. After a while, if the screen appears the following words:

Ok! Ok! Ok!

Press any key to return ...

This means rebuilding the partition table successfully and pressing any key to exit. After restarting your computer, the repair succeeds if you can enter sections C, D, and so on.

6, with Disk Genius backup recovery partition table

Diskgenius not only provides basic hard disk partition management functions such as setting up, activating, deleting and hiding partitions, but also has powerful partition maintenance functions such as partition table backup and restore, partition parameter modification, HDD master boot record repair, rebuilding partition table and so on. In addition, he also has the partition format, the partition lossless adjustment, the hard disk surface scan, the sector copy, completely clears the sector data and so on the practical function.

Tip: If you just want to use Diskgenius to view, back up the hard disk partition information, you can run it directly under the Windows system, but if it involves changing the partition parameters of the write disk operation, you must run in a pure DOS environment, and in the CMOS before using the "AntiVirus" option is set to " Disable ".

After you run disk genius, the program will automatically read the partition information for your hard disk and display the hard disk partition on the screen as a chart. As shown in the figure, this is the Diskgenius to detect the author's hard drive to get the partition information structure diagram. The column chart on the left shows the location and size of each partition on the hard disk, showing the type of each partition and its specific parameters on the right side of the screen, including the Guide flag, System flag, partition start and end cylinder number, sector area code, and number one. There is a dynamic line between the histogram and the parameter table indicating the correspondence between them. You can select a partition by clicking the mouse in a histogram or table, or you can select the current partition by using the cursor movement key on the keyboard.

When you need to back up your partition table, press the "F9" key or run the tools → back up partition Table command, and then type the file name in the pop-up dialog box to back up the current partition table. Press the "F10" button or run the "tools → restore partition Table" command, and then enter a filename, the software will read the specified partition table backup file and update the screen display, confirmed that the backup partition table can be restored to the hard disk.