how can I separate the C:\ drive from all drivers?

Question

I have this program but I have an issue when this try to access the FIRST if... I need to separate the drivers and only get the total size of C:\. When the program stops at the if... say that the drive is not ready. What can I do?

class Program
{
    static void Main(string[] args)
    {
        string mainHD = Path.GetPathRoot(Environment.GetFolderPath(Environment.SpecialFolder.System));

        GetTotalFreeSpace(mainHD);

        DriveInfo[] drives = DriveInfo.GetDrives();
        foreach (DriveInfo drive in drives)
        {
            if (drive.VolumeLabel != @"C:\")
            {
                //There are more attributes you can use.
                //Check the MSDN link for a complete example.
                string drivesname = drive.Name;
                Console.WriteLine(drivesname);
                if (drive.IsReady) Console.WriteLine(drive.TotalSize);
            }
        }
        Console.ReadLine();
    }

    private static long GetTotalFreeSpace(string driveName)
    {
        foreach (DriveInfo drive in DriveInfo.GetDrives())
        {
            if (drive.IsReady && drive.Name == driveName)
            {
                return drive.TotalSize;
            }
        }
        return -1;
    }
}
}

Answer 1

It looks like you should be testing drive.IsReady before checking drive.VolumeLabel.

Take a look at the MSDN sample.

Try this:

foreach (DriveInfo drive in drives)
{
    if (drive.IsReady && drive.VolumeLabel != @"C:\")
    {
        //There are more attributes you can use.
        //Check the MSDN link for a complete example.
        string drivesname = drive.Name;
        Console.WriteLine(drivesname);
        Console.WriteLine(drive.TotalSize);
    }
}

While this may be an issue of the C: drive not being ready, it could also be a case where there is an A: or B: floppy drive, and in that case, continuing to check IsReady until it is ready is probably not a good idea.