C: Hd volume serial number getting extremely slow

Question

I have to read the C# volume serial number (the one provided when typing dir in a cmd prompt). That has always worked but today it is extremely slow.

[01.07.2024 12:54:35.415] I GetHdSerialString START

[01.07.2024 12:55:41.936] I GetHdSerialString END

so like more than one minute to get it.

The routine is the following

public static string GetHdSerialString()
{
    try
    {
        WriteNLog("GetHdSerialString START ", eLogLevel.Info);
        using ManagementClass mangnmt = new ManagementClass("Win32_LogicalDisk");
        using ManagementObjectCollection mcol = mangnmt.GetInstances();
        string result = "";
        foreach (ManagementObject strt in mcol.Cast<ManagementObject>())
        {
            result += Convert.ToString(strt["VolumeSerialNumber"]);
            break; //mi interessa solo il primo
        }

        result = result.Insert(4, "-");
        WriteNLog("GetHdSerialString END ", eLogLevel.Info);

        return result;
    }
    catch (Exception exc)
    {
        WriteNLog("GetHdSerialString exc:" + exc.Message, eLogLevel.Error);
        return String.Empty;
    }
}

Here is the point where it takes so long

Can anyone tell me why all of a sudden it takes so long and how to fix it?

I also tried other ways or retrieving that data but couldn't find any. Thanks Patrick

Answer 1

Actually the user "Good Night Nerd Pride" put me on the right track. As written in the comment above I tried some hw or driver causes but that was not the case. So I thought about the antivirus and without it that worked! Not sure why the antivirus is interfering with the hw management but as a matter of fact without it starting is immediate, with it it takes ages.