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- {
- MAYNARD PHILBROOK
-
- > How can I look With a pascal-Program(I have TP7.0)in the boot-sector
- > of a disk and change them?
- }
-
- Uses
- Dos;
-
- Var
- Sector : Array [1..512] of Byte;
- Regs : Registers;
-
- Function Read_Boot_Sector(Var Drive : Byte) : Boolean;
- begin
- With Regs do
- begin
- AH := $02; { Function Number Read_Sector }
- AL := 1; { Number of Sectors to Read }
- CH := 1; { Cylender Number, Upper 2 Bits used For HD }
- CL := 0; { Bios use Zero base Numbers here }
- DH := 0; { Head Number or Side 0 = side 1 }
- DL := Drive; { 0 = A:, 1 := B: Floppys, Add $80 For Fisk Disk }
- ES := Seg(Sector); { Pass the Address of Buffer }
- BX := Ofs(Sector);
- Intr($13, Regs); { Call Bios Int ); }
- if Flags and $01 <> 0 Then
- Read_Boot_Sector := False
- else
- Read_Boot_Sector := True;
- end;
- end;
-
- begin
- if Read_Boot_Sector(0) Then
- WriteLn(' Got it ')
- else
- WriteLn(' Disk Error in reading ');
- end.