//Calculate HDD Size in MB from entered GB
//  for creating new partitions in correct wanted size
//    because the Disk Management works with MB only

vInput = prompt("Enter GB size (add a 'T' for TB input) to calculate to MB :", "80");

vInput = vInput.toUpperCase();
vTest =  vInput.replace(/[A-Z ]/g,"");
if(vTest.length < 1){alert("Missing the size?\nUse e.g. 80 for 80GB or 80t for 80TB");quit();}

vInput = vInput.replace(/[A-FH-SU-Z ]/g,"");

if(vInput.indexOf("G") > 0){
	vInput = vInput.replace(/[A-Z ]/g, "");
	vResult = vInput * 1024;
	alert(vInput + " GB = " + vResult + " MB");
}else 
	if(vInput.indexOf("T") > 0){
	vInput = vInput.replace(/[A-Z ]/g, "");
	vResult = vInput * 1024 * 1024;
	alert(vInput + " TB = " + vResult + " MB");
}else{
	vInput = vInput.replace(/[A-Z ]/g, "");
	vResult = vInput * 1024;
	alert(vInput + " GB = " + vResult + " MB");
}