Getting list of HD's on the current computer

I want to create a combo box that allow the user to select a HD from their machine. To do this, I need to know all of the HD's mounted/mapped on their machine. How do I get this list?

Thanks for the help,
chmod101
chmod101Asked:
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DrDelphiConnect With a Mentor Commented:
I have a perfect example of this on my website:

http://www.drdelphi.com/delphi/right/tips/diskinfo.htm

Good luck!!
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alanwhincupCommented:
Here is another example:

To use it just drop a ComboBox on a form and put the following code in theForms OnCreate event:

procedure TForm1.FormCreate(Sender: TObject);
var
  Buff : array[0..110] of Char;
  P : PChar;
  S : string;
begin
  FillChar(Buff, SizeOf(Buff), #0);
  GetLogicalDriveStrings(110, Buff);
  P := Buff;
  while P^ <> #0 do
  begin
    S := string(P);
    P := StrEnd(P) + 1;
    ComboBox1.Items.Add(S);
  end;
  ComboBox1.ItemIndex := 0;
end;

Cheers,

Alan
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Mohammed NasmanSoftware DeveloperCommented:
Hello

 The GetDriveType  function determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive.  

  Add ListBox and button to the form, and in the Button click event added this code, this code will show all the drives in your computer and it's type, if you want only to show the HardDisk, add only on the list the  drvType DRIVE_FIXED

procedure TForm1.Button1Click(Sender: TObject);
var
  x,
  DrvType   : Integer;
  DrvLetter,
  DrvString : String;
begin
  for x := Ord('A') to Ord('Z') do
  begin
    DrvLetter := Chr(x)+':\';
    DrvType := GetDriveType(pChar(DrvLetter));
    case DrvType of
      0,1               : DrvString := '';
      DRIVE_REMOVABLE      : DrvString := 'Removable';
      DRIVE_FIXED     : DrvString := 'Fixed';
      DRIVE_REMOTE     : DrvString := 'Network';
      DRIVE_CDROM     : DrvString := 'CD-ROM';
      DRIVE_RAMDISK     : DrvString := 'RAM disk';
    end;
    if DrvString <> '' then
      Listbox1.Items.Add(DrvLetter + ' = ' + DrvString);
  end;
end;

Best regards
Mohammed Nasman
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