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DOS学习入门 & 精彩文章（教学室） » Restore the master boot partition with DEBUG

Floor1　playboy2925	Posted 2003-02-26 00:00
银牌会员　Posts 393　Credits 1,275
C:\DOS>DEBUG -n mainboot.dat ;load the backed-up data file -l ;load -a100 1078:0100 mov ax,0301 ;03 = write, 01 = number of sectors 1078:0103 mov bx,0200 ;start writing from 0200 in memory 1078:0106 mov cx,0001 ;00 = track number, 01 = starting sector number 1078:0109 mov dx,0080 ;00 = head 0, 80 means hard disk 1078:010C int 13 ;BIOS disk interrupt 1078:010E int 20 ;end 1078:0110 ^C -g=100 ;execute from 0100 Program terminated normally -q ;quit DEBUG

Floor2　wolfwood	Posted 2003-02-26 00:00
初级用户　Posts 14　Credits 158
Actually, just a 100 mov ax,301 is enough, since you saved 300 bytes, right? Or simply after changing mov ax,301 save it as a .com and run it directly, wouldn't that be more convenient