//для 95, 98, Me
type
TDiocRegisters = record
EBX, EDX, ECX, EAX, EDI, ESI, Flags: LongWord end;
TVWin32CtlCode = (ccNone, ccVWin32IntIoctl, ccVWin32Int25,
ccVWin32Int26, ccVWin32Int13);
function VWin32(CtlCode: TVWin32CtlCode;
var Regs: TDiocRegisters): Boolean; // вспомогательная процедура
var
Device: THandle;
Count: LongWord;
begin
Device := CreateFile('\\.\VWIN32', 0, 0, nil, 0,
FILE_FLAG_DELETE_ON_CLOSE, 0);
if Device = INVALID_HANDLE_VALUE then
raise Exception.Create(SysErrorMessage(GetLastError));
try
Result := DeviceIoControl(Device, Ord(CtlCode), @Regs,
SizeOf(Regs), @Regs, SizeOf(Regs), Count, nil);
finally
CloseHandle(Device) end end;
//само чтение
procedure WriteBoot95(Drive: Char; var Boot: TSector);
var
Regs: TDiocRegisters;
begin
with Regs do begin
EAX := Ord(UpCase(Drive)) - Ord('A');
EBX := LongWord(@Boot);
ECX := 1;
EDX := 0 end;
if not VWin32(ccVWin32Int25, Regs) then
raise Exception.Create(SysErrorMessage(GetLastError)) end;
//для NT, 2000, XP попроще
type
TSector = array[0..511] of Byte;
procedure WriteBootNT(Drive: Char; var Boot: TSector);
var
BytesWrite: Cardinal;
H: THandle;
begin
H := CreateFile(PChar(Format('\\.\%s:', [UpCase(Drive)])),
GENERIC_WRITE, 0, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
if H = INVALID_HANDLE_VALUE then
raise Exception.Create(SysErrorMessage(GetLastError));
try
if not WriteFile(H, Boot, SizeOf(Boot), BytesWrite, nil)then
raise Exception.Create(SysErrorMessage(GetLastError));
finally
CloseHandle(H) end end;
// а юзать так
var
Boot: TSector;
begin
case Win32Platform of
VER_PLATFORM_WIN32_WINDOWS:
WriteBoot95(Drive, Boot);
VER_PLATFORM_WIN32_NT:
WriteBootNT(Drive, Boot) end;