unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, FileUnit, StdCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  i: Integer;
  Drives: String;
begin
  Memo1.Lines.Clear;
  Drives := GetDriveString;
  for i := 1 to Length(Drives) do
  begin
    Memo1.Lines.Add(Drives[i] + ' ' + IntToStr(DriveType(Char(Drives[i]))));

  end;
end;

end.