You could use WMI. The "table" Win32_LogicalDisk contains the desired information. 
use Win32::OLE qw( in );

my $wmi_service = Win32::OLE->GetObject("winmgmts:{impersonationLevel=
+impersonate}!\\\\.\\root\\cimv2")
   or die("Unable to connect to WMI: $!\n");

# DriveType 3 = local hard disk
my $disk_col = $wmi_service->ExecQuery("
   SELECT DeviceID
     FROM Win32_LogicalDisk
    WHERE DriveType = 3
");

my @drives = map { $_->DeviceID } in $disk_col;

local $, = ", ";
local $\ = "\n";
print @drives;

[download]

On my computer, the above prints C:, D:, E:.
If I remove the WHERE clause, it prints A:, B:, C:, D:, E:, F:, G:, H: (Floppy drives, hard drives, optical drives, USB drives, network drives, virtual drives, etc.)

In reply to Re: how to identify the windows drives by ikegami
in thread how to identify the windows drives by arunmep

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.