#!/usr/bin/perl -w

if ( $^O =~ /^(MS)?Win/ )
{
eval{
require Win32:: DriveInfo;

$TotalNumberOfFreeBytes = (Win32:: DriveInfo:: DriveSpace('c:'))[6];
$TotalNumberOfBytes = (Win32:: DriveInfo:: DriveSpace('c:'))[5];

print "This is $^O \n";
print "Total Free: $TotalNumberOfFreeBytes\tTotal size: $TotalNumberOfBytes\n";
};
print $@,"\ndone!";
}
elsif ( $^O =~ /^linux/ )
{
print "This is Linux OS!!!\n";
}

##</code><code>##

Too late to run INIT block at C:/Perl/site/lib/Win32/API/Type.pm line 71.

This is MSWin32
Total Free: 26845294592 Total size: 31461662720

done!

How to handle the first message in windowXP :

Too late to run INIT block at C:/Perl/site/lib/Win32/API/Type.pm line 71.