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MS-DOS 7 Boot Process: Connect to the MBR of the hard disk through BIOS, the MBR boots IO.SYS, then load MSDOS through COMMAND, load CONFIG, and finally run AUTOEXEC. (If there is a problem, I hope brothers can say it.)
2 HDSECT Chinese Version
I. Concept and Function of MBR:
MBR is the abbreviation of Main Boot Record. The narrow sense of MBR refers to a small section of the program in the first half of the 0 cylinder, 0 head, 1 sector of the hard disk. The broad sense of MBR refers to the entire 512 bytes of the 0 cylinder, 0 head, 1 sector of the hard disk, including the HDPT (hard disk partition table) in the second half. This article refers to the latter.
Since the MBR is the first program to be accessed when the hard disk boots, for a newly bought hard disk, because the MBR is all 0, it cannot boot. At this time, we need to use a partition tool (such as FDISK) to partition. The functions of partitioning are two: 1. Automatically write the standard MBR, 2. Write the HDPT (hard disk partition table) according to the partition capacity entered by the user.
II. Important Significance of Backing Up/Restoring MBR:
Once the MBR is damaged by factors such as viruses or incorrect operations, the computer will not be able to boot. Therefore, it is necessary to make a backup when the MBR is normal. It only has 512 bytes and occupies a small space, so this software backs up the MBR to the hidden sector of the hard disk (0 cylinder, 0 head, 52 sector) for restoration when needed.
III. Important Significance of Clearing MBR:
It fills all 512 characters of the 0 cylinder, 0 head, 1 sector of the hard disk with 0. Its functions are:
1. Quickly delete the existing partitions (C drive, D drive...) of the hard disk
2. Completely eliminate boot viruses
3. Clear the obstacles for the next step of "partitioning"
[ Last edited by shanliang8008 on 2007-10-9 at 03:55 PM ]
MS-DOS 7 Boot Process: Connect to the MBR of the hard disk through BIOS, the MBR boots IO.SYS, then load MSDOS through COMMAND, load CONFIG, and finally run AUTOEXEC. (If there is a problem, I hope brothers can say it.)
2 HDSECT Chinese Version
I. Concept and Function of MBR:
MBR is the abbreviation of Main Boot Record. The narrow sense of MBR refers to a small section of the program in the first half of the 0 cylinder, 0 head, 1 sector of the hard disk. The broad sense of MBR refers to the entire 512 bytes of the 0 cylinder, 0 head, 1 sector of the hard disk, including the HDPT (hard disk partition table) in the second half. This article refers to the latter.
Since the MBR is the first program to be accessed when the hard disk boots, for a newly bought hard disk, because the MBR is all 0, it cannot boot. At this time, we need to use a partition tool (such as FDISK) to partition. The functions of partitioning are two: 1. Automatically write the standard MBR, 2. Write the HDPT (hard disk partition table) according to the partition capacity entered by the user.
II. Important Significance of Backing Up/Restoring MBR:
Once the MBR is damaged by factors such as viruses or incorrect operations, the computer will not be able to boot. Therefore, it is necessary to make a backup when the MBR is normal. It only has 512 bytes and occupies a small space, so this software backs up the MBR to the hidden sector of the hard disk (0 cylinder, 0 head, 52 sector) for restoration when needed.
III. Important Significance of Clearing MBR:
It fills all 512 characters of the 0 cylinder, 0 head, 1 sector of the hard disk with 0. Its functions are:
1. Quickly delete the existing partitions (C drive, D drive...) of the hard disk
2. Completely eliminate boot viruses
3. Clear the obstacles for the next step of "partitioning"
[ Last edited by shanliang8008 on 2007-10-9 at 03:55 PM ]