public Start(Wizard sb)
        {
            InitializeComponent();

            _scanBase = sb;

            DataContext = _scanBase.Options;

            // Get drives that are checked
            var drivesChecked =
                _scanBase.Options.Drives.Where(includeDrive => includeDrive.IsChecked.GetValueOrDefault()).ToList();

            // Clear drives
            _scanBase.Options.Drives.Clear();

            try
            {
                _scanBase.Options.Drives.AddRange(DriveInfo.GetDrives()
                                                  .Select(di => new IncludeDrive(di))
                                                  // Iterate through drives and check drive if checked in previous list
                                                  .Select(
                                                      includeDriveToAdd => new IncludeDrive {
                    IsChecked = drivesChecked.Contains(includeDriveToAdd), Name = includeDriveToAdd.Name
                }));
            }
            catch (UnauthorizedAccessException ex)
            {
                Debug.WriteLine("The following error occurred: {0}\nUnable to get list of drives.", ex.Message);
            }

            // Only include directories that exist
            if (_scanBase.Options.IncFolders.Count > 0)
            {
                _scanBase.Options.IncFolders =
                    new ObservableCollection <IncludeFolder>(
                        _scanBase.Options.IncFolders.Where(includeFolder => Directory.Exists(includeFolder.Name)));
            }

            _scanBase.Options.SkipTempFiles  = true;
            _scanBase.Options.SkipSysAppDirs = true;
            _scanBase.Options.SkipWindowsDir = true;

            _scanBase.Options.OnPropertyChanged(nameof(_scanBase.Options.SkipFilesGreaterThan));
            _scanBase.Options.OnPropertyChanged(nameof(_scanBase.Options.SkipFilesGreaterSize));
            _scanBase.Options.OnPropertyChanged(nameof(_scanBase.Options.SkipFilesGreaterUnit));

            _scanBase.Options.HashAlgorithms = HashAlgorithm.CreateList();
            _scanBase.Options.HashAlgorithm  = _scanBase.Options.HashAlgorithms[2]; // SHA1
        }