Device CD-Rome when is not ready throw exception for TotalFreeSpace

Hi @דני שטרית ，Welcome to Microsoft Q&A,

Normally if the drive is not ready, you cannot get it.

A simpler way is to add a try catch section to get to avoid errors.

For example:

using System;
using System.IO;

class Program
{
     static void Main()
     {
         //Specify the drive letter of the CD-ROM drive
         string driveLetter = "D"; // Change this value to the appropriate drive letter

         try
         {
             // Construct the drive path
             string drivePath = $"{driveLetter}:\\";

             //Create a DriveInfo object to obtain drive information
             DriveInfo driveInfo = new DriveInfo(drivePath);

             // Check if the drive is ready
             if (driveInfo.IsReady)
             {
                 // Get the total remaining space of the drive (in bytes)
                 long totalFreeSpace = driveInfo.TotalFreeSpace;

                 // Convert bytes to human-readable format (e.g. KB, MB, GB)
                 string totalFreeSpaceFormatted = FormatBytes(totalFreeSpace);

                 Console.WriteLine($"The total remaining space of drive {drivePath} is: {totalFreeSpaceFormatted}");
             }
             else
             {
                 Console.WriteLine($"Drive {drivePath} is not available.");
             }
         }
         catch (Exception ex)
         {
             Console.WriteLine($"An error occurred: {ex.Message}");
         }
     }

     // Convert bytes to human readable format
     static string FormatBytes(long bytes)
     {
         string[] suffixes = { "B", "KB", "MB", "GB", "TB" };
         int counter = 0;
         decimal number = bytes;

         while (Math.Round(number / 1024) >= 1)
         {
             number /= 1024;
             counter++;
         }

         return $"{number:n1} {suffixes[counter]}";
     }
}

Best Regards,

Jiale

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