VOID LoadAndBootBootSector ( PCSTR OperatingSystemName )

Definition at line 22 of file miscboot.c.

Referenced by OptionMenuCustomBootBootSectorFile(), and RunLoader().

{
    PFILE   FilePointer;
    CHAR    SettingName[80];
    ULONG   SectionId;
    CHAR    FileName[260];
    ULONG   BytesRead;

    // Find all the message box settings and run them
    UiShowMessageBoxesInSection(OperatingSystemName);

    // Try to open the operating system section in the .ini file
    if (!IniOpenSection(OperatingSystemName, &SectionId))
    {
        sprintf(SettingName, "Section [%s] not found in freeldr.ini.\n", OperatingSystemName);
        UiMessageBox(SettingName);
        return;
    }

    if (!IniReadSettingByName(SectionId, "BootSectorFile", FileName, sizeof(FileName)))
    {
        UiMessageBox("Boot sector file not specified for selected OS!");
        return;
    }

    FilePointer = FsOpenFile(FileName);
    if (!FilePointer)
    {
        strcat(FileName, " not found.");
        UiMessageBox(FileName);
        return;
    }

    // Read boot sector
    if (!FsReadFile(FilePointer, 512, &BytesRead, (void*)0x7c00) || (BytesRead != 512))
    {
        UiMessageBox("Unable to read boot sector.");
        return;
    }

    // Check for validity
    if (*((USHORT*)(0x7c00 + 0x1fe)) != 0xaa55)
    {
        UiMessageBox("Invalid boot sector magic (0xaa55)");
        return;
    }

    UiUnInitialize("Booting...");
    // Don't stop the floppy drive motor when we
    // are just booting a bootsector, or drive, or partition.
    // If we were to stop the floppy motor then
    // the BIOS wouldn't be informed and if the
    // next read is to a floppy then the BIOS will
    // still think the motor is on and this will
    // result in a read error.
    //DiskStopFloppyMotor();
    //DisableA20();
    ChainLoadBiosBootSectorCode();
}

ReactOS Development > Doxygen