Hard disk data recovery instance full solution (3) CLINUXER laissez-aller 2001-05-09 10:04:05
Fourth, actual operation My hard disk is IBM 9.44GB hard drive, the partition is as follows: One day is completely deleted by friends with Win2000 comes with the disk management tool, and no operation is performed after deleting. On the selection of the recovery tool, because the four partitions are FAT16, one is NTFS, I decided to restore three FAT16 partitions with Norton Disk Doctor, but because NORTON Disk Doctor does not support NTFS, EasyRecovery supports NTFS. 1. FAT partition Recovery Opens Norton Disk Doctor in Norton Utility, NDD automatically detects your hard disk partition, when you detect the partition table of the disc 2, jump out of a prompt window, ask if you are accessing disk 2 In the process, you have trouble, press the "Yes" button. In the next pop-up window, Norton Disk Doctor does not find any DOS partition on disk 2, whether you want Norton Disk Doctor to search and rebuild the DOS partition, of course, "Yes". Soon another "partition search window" popped up, prompt to find a 2039MB DOS partition, is it to recover, of course, "Yes." In the next inquiry searches for more DOS partition windows, select "Yes", and find a DOS partition, I have been answering "Yes" until Norton Disk Doctor finds 3 DOS partitions, because NTFS partition Norton Disk Doctor does not support, so After finding the 3 partitions, if the disk search program asks you to search for more DOS partitions, select "NO", restart your computer, discover the lost three FAT partitions completely recovered, and WinMe can still start normally. 2.NTFS Recovery NTFS Partition Recovery We are implemented using EasyRecovery, open EasyRecovery, press "Next" to enter disk selection window, select "Unknown File System Type under My IBM-DTTA-351010" 4.43GB) ", press" Next ". In the next window you can set the start sector of the partition and the STARTOR, do not sector, do not need it, press "Next" to continue. Now, select "NTFS" in the selection partition file format window, select "NTFS" in the "File System Type" drop-down menu (I should choose to match your condition, if you don't know the partition format can also Select "RAW" to search for a full search), search mode, "Typical Scan" is available, press "Next" / "next". After a rumbling rumble, the search results finally appeared in front of us, hook the file you need to recover, and enter the destination path of your recovery file in the Destination below, press "Next" to restore ...... 3. After the resume partition formatted partition is formatted, we can still recover any files.
Tool? Of course, EasyRecovery, but it is necessary to explain that since the formatter is completely destroyed with EasyRecovery, you will see some DIR0, DIR1 and other directories (but the file name in the directory is still complete)! Launching the fault, I have a computer home, if a day hard drive can't start, light, let you fall into the hands and trouble, lose important information, we will have the whole process of the hard drive started to explain the problems that may occur in each stage. The measures should be taken to solve your hands and foots ... I. Error information: "Non system disk or disk error, replace and strike any key means", after starting with floppy disk, type C:, screen after A:> Display: "Invalid Drive Specification", the system does not recognize the hard disk. Fault Analysis: The reason for this failure is generally caused by hard disk setting parameters in CMOS or hard disk type settings. Solution: Enter CMOS, check if the hard disk setting parameter is lost or if the hard disk type setting is wrong, if it is indeed a malfunction, simply restore the hard disk setting parameter to recover or modify it. Specific modification: Enter CMOS settings, select "HDD Auto Detection" option, you can automatically detect hard disk type parameters (depending on the BIOS, some BIOS may be "IDE Auto Detection", only You need to modify your own options). If there is no such thing, and there is no backup CMOS, you have to open the chassis and see the hard disk parameters on the hard disk surface tab, and then modify it. Second, the error message: After boot, the screen is displayed: "Invalid Partition Table", the hard disk cannot be started, if the C disk is recognized from the floppy disk. Fault Analysis: The reason for this failure is generally the partition table in the main guidance record of the hard disk. When multiple active partitions (only one active partition) or viruses occupy the partition table, there will be said prompts. The main guiding sector is located at 0 head 0 cylindrical 1 sector, generated by fdisk.exe to partition the hard disk partition. The main boot sector includes a main boot program (MBR), partition table (DPT), and end flag 55aa, a total of one sector. The main boot program contains program code and error information such as checking the hard disk partition table, error handling and other content. When the hard disk is started, the main boot program will check the activity flag in the partition table. If a partition is an active partition (Active), there is a partition mark 80h, otherwise 00h, and for the operating system such as DOS, only one partition is active partition. If the partition table contains multiple activity flags, the main boot The program gives an error prompt for "invalid partition table". Solution: Solution Many: The easiest is to use NDD to fix (because we can enter Windows, we will use DOS version of NDD), which will automatically check the partition error and fix it. It should be noted that because there are many ways to damage the partition table, we need to first back up the main boot sector before the partition table changes, so that even if the error is recovered, we can return to the previous position before returning. Third, the error message: The system self-test is normal, and only the "Operation System Not Found" error message will not be booted after self-test, but after starting the computer with a floppy disk, you can see anything on the hard disk.
Fault Analysis: This problem is generally because MBR appears when checking the activity partition, and is similar to our incoming error, the difference is that one is too many active partitions in the partition table, and this example is not Active partition is caused. Solution: Start your computer with a floppy disk, then execute partition programs fdisk.exe, press "2" to select the SET Active Partition. In the next selection activity partition window, select the partition you want to start, I choose "1" - Primary DOS (main DOS partition), corresponding to the C: disk under my DOS / Windows. Fourth, error message: Host add some self-test, self-test, the hard disk indicator is shining, the screen appears: "Operting System Not Found" error message, the hard disk starts failed. When starting with a floppy disk, when trying to get hard drive, appear: "Invalid DRIVE Specification" error message. Fault Analysis: Use Norton DiskedIt to see the physical 0 sector of the disk, found that the partition end sign 55AA is destroyed. Solution: This problem we also use NDD to fix, if you don't have NDD, you can use the corresponding disk editing tool, directly change the last two characters of the physical 0 sector to 16-based 55AA. 5. Fifth, error message: The power-on screen displays "Operting System Not Found", there are three error messages after starting with Win98, can't see any partition under DOS, view the main boot sector with DiskeDit, and found that it has been completely destroyed. Fault Analysis: This problem should be a manifestation of partition tables that are seriously damaged, which may be a virus or artificial misoperation (such as selecting an error option when using GHOST recovery partition). Solution: Refer to the "partition table destruction" we introduced before. 6. Error information: "ERROR Loading Operating System" or "Missing Operating System" or "Missing Operating System" or "Missing Operating System" or "Disk I / O Error Replace The Disk Then Press Any Key" appears. Fault Analysis: The reason for this fault is generally a DOS boot record error. The DOS boot record is located in a logical 0 sector, which is generated by the advanced format command Format. After checking the partition table correctly, based on the start address of the active partition pointed out in the partition table, read the DOS boot record, if you fail to read five times, give the error prompt of "Error Loading Operting System". Can read the DOS boot record correctly, the main boot program will send the DOS boot record to the memory 0: 7C00H, then check if the last two bytes of the DOS boot record is 55AAH, if not these two bytes, give Tips for "Missing Operation System". Solution: You can use NDD to solve it for these questions, but there are different solutions according to different error probes: 1. Error prompt is "Invalid System Disk, Replace The Disk, and Then Press Anykey". This situation is generally because the system boot file IO.sys is deleted or corrupted, and "Sys A: C:" can be transmitted to the C: disk. 2. "Error Loading System" error prompt. This prompt indicates that the starting position of the active partition labeled in the partition table or the DOS boot record error can only be repaired with NDD. 3. "Missing Operating System" error prompt. Edit the boot area of the respective active partition with DiskedIT and change the final partition end sign to 55AA.
