How to back up the primary boot partition of a hard disk to a file

This article mainly explains "how to back up the hard disk master boot partition to a file", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to back up the hard disk master boot partition to a file.

C:\ DOS > DEBUG

-A100

1078 0100 mov ax,0201; 02 = read, 01 = number of sectors read

1078 mov bx,0200 0103; after reading, put it at 0200 of the memory

1078 0106 mov cx,0001; 00 = track number, 01 = starting sector number

1078 0109 mov dx,0080; 00 = 0 head, 80 represents hard disk

1078 010C int 13; BIOS disk interrupt

1078 010E int 20; end

1078Drex 0110 ^ C

-Group100; execute from 0100

Program terminated normally; program display

-rcx; the CX register defines the size of the saved file

CX 0000; set file size

: 300; 300H = 768 bytes

-n mainboot.dat; saved in the file mainboot.dat

-w; write files

Writing 00300 bytes; program display

-Q; quit DEBUG

At this point, I believe you have a deeper understanding of "how to back up the hard disk master boot partition to a file". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!