Syntax
filesystemobject.DriveExists(letter)
The DriveExists() method determines whether a drive exists or not.
This method takes letter as a parameter, which specifies a drive letter to look for.
<html>
<body>
<script language="JScript">
<!--
function checkDrive()
{
var myObject;
myObject = new ActiveXObject("Scripting.FileSystemObject");
if(myObject.DriveExists("d")){
alert("Drive D exists");
} else {
alert("Drive D doesn't exist");
}
}
-->
</script>
Check for drive "D"
<form name="myForm">
<input type="Button" value="Check drive" onClick='checkDrive()'>
</form>
</body>
</html>