How to format USB & CD-Rome

.........................

Your quick answer will be appreciated.

Hi,@Dani_S. You could try the following example and see if it helps you.
.NET doesn't provide direct methods for formatting drives, so you can try using interop services to call the necessary Windows API functions.

For formatting a USB drive, you can use the InvokeMethod from ManagementObject.

using System;
using System.Diagnostics;
using System.IO;
using System.Management;

   static void Main()
   {
       string driveLetter = "E:"; // Replace with your USB drive letter
       FormatDrive(driveLetter);
       FormatCDROM(driveLetter);
   }
   static void FormatDrive(string driveLetter)
   {
       string query = $"SELECT * FROM Win32_Volume WHERE DriveLetter = '{driveLetter}'";
       using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(query))
       using (ManagementObjectCollection results = searcher.Get())
       {
           foreach (ManagementObject volume in results)
           {
               try
               {
                   volume.InvokeMethod("Format", new object[] { "NTFS", true, 4096, "New Volume", false });
                   Console.WriteLine($"Drive {driveLetter} formatted successfully.");
               }
               catch (Exception ex)
               {
                   Console.WriteLine($"Error formatting drive {driveLetter}: {ex.Message}");
               }
           }
       }
   }

Is not working why ?

Please can you please fix it ?

It show formatted successfully but is not.

this is my code:

#if WINDOWS

                WindowsIdentity.RunImpersonated(

                 ImpersonationHelper.Token,

                        () =>

                        {

                            string query = $"SELECT * FROM Win32_Volume WHERE DriveLetter = '{driveLetter}'";

                            using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(query))

                            using (ManagementObjectCollection results = searcher.Get())

                            {

                                foreach (ManagementObject volume in results)

                                {

                                    try

                                    {

                                        volume.InvokeMethod("Format", new object[] { "NTFS", true, 4096, "New Volume", false });

                                        _logger.Info($"Drive {driveLetter} formatted successfully.");

                                    }

                                    catch (Exception ex)

                                    {

                                        _logger.Error($"Error formatting drive {driveLetter}", ex);

                                    }

                                }

                            }

                        

                        });

#endif

I got

UnknownError = 18

Can you please answer qiuckly.

Can you please answer quickly?

Hi,@Dani_S. Could you share more complete error message? After seeing your error message, I can't confirm the cause of the problem.

By the way, the first solution I provided should work according to my research.

First, you could check the name of your USB drive through the following code

        public static void CheckDisk()
        {
            DriveInfo[] s = DriveInfo.GetDrives();
            var result = string.Empty;
            foreach (DriveInfo i in s)
            {
                Console.WriteLine(i.Name);
            }
        }

Then execute the following code. Code function: Open cmd.exe and enter the command to format the disk and then return the result of the command.

Note:

I'm using Maui and impersonation.

I got this error:

Access Denied as you do not have sufficient privileges or

the disk may be locked by another process.

You have to invoke this utility running in elevated mode

and make sure the disk is unlocked.

Cannot open volume for direct access

Your quick answer will be appreciated.

I opened.

what is /C ?

$"/C format {driveLetter} /Y /FS:FAT32 /V:New_Volume /Q")

According to your description, whether the USB encrypted with Bitlocker? If so, you need to unlock bitlocker first and then format the USB.

Whether have you tried to launch your program with administrator privileges?

Yes.

From : https://video2.skills-academy.com/en-us/answers/questions/1855048/how-to-format-usb

I set :

proc.StartInfo.UseShellExecute = true; //required proc.StartInfo.Verb = "runas";

I got :

System.ComponentModel.Win32Exception: 'An error occurred trying to start process 'cmd.exe' with working directory 'C:\Windows\system32'. Unknown error (0xfffffffe)'

Your quick answer will be appreciated.

@Hui Liu-MSFT

I opened new ticket and ir closed so i continue discussion here.

Need help?

Here my code

Whether the USB encrypted with Bitlocker? If so, you need to unlock bitlocker first and then format the USB. Have you unlocked the BitLocker?

No is not bitlocker.It is simple usb.

Your qucick answer will be great.

I'm using format NTFS usb with impersonation in MAUI.

Is it the right code?

As this issue is complex, to resolve this issue as soon as possible, you can open an incident via Contact us tab at link below: https://developer.microsoft.com/en-us/windows/support/

Please choose the Technical Support - Coding/Debugging for Windows SDK for this issue. In-addition, if the support engineer determines that the issue is the result of a bug the service request will be a no-charge case and you won't be charged.

The problem for usb is solved.

no need to warp the process with this code.

#if WINDOWS

            WindowsIdentity.RunImpersonated(

            ImpersonationHelper.Token,

                () =>

                {

What is in Arguments = "/c C:\PathToYourCDFormattingTool.exe /format /driveletter E",

C:\PathToYourCDFormattingTool.exe?

Your qiuck answer will be great.

Your quick answer will be appreciated.The format Cdrome first solution not work.

the /c tells the cmd shell to exit after executing the command. otherwise the shell window is still open, and the start process won't complete until the user closes the shell window.

What is C:\PathToYourCDFormattingTool.exe? what i need to write.

in Arguments = "/c C:\PathToYourCDFormattingTool.exe /format /driveletter E",

To add a little to this.

What is C:\PathToYourCDFormattingTool.exe? what i need to write.

This is a question that can only be answered by you.

To go into a little more detail, CD-ROMs are not things that can be formatted in the same way as hard disks or USB devices.

CDs, DVDs and BluRays are usually made out of metal, where the contents of the disk is pressed into the metal in a factory.

Writable medium, such as CD-Rs, CD-RWs, DVD-Rs, DVD-RWs and so on use ink to accomplish a compatible goal. Instead of the laser reflecting off of the metal, it reflects off of the ink instead. Even then, usually formatting isn't something that would be done.

For CD-Rs and DVD-Rs, writing to the disk is usually a two step process. The first step is to figure out the files that are going to be written to the disk and then works out the filesystem based upon this information. This normally outputs something like a .ISO file. The second step is to take this .ISO file and write it to the disk. There are tools to do this, but I do not believe that it is my responsibility to solve this problem.

However, since the initial question involved something unclear and, assuming CD-ROM was meant instead of CD-Rome, clearly impossible. I would like to suggest that the question and problem is revisited. Nobody on this forum is going to be willing to write all of the code and provide support if/when it goes wrong.

Why this code is not working?

The drive letter to "E:"

i got this error: "The type of the file system is RAW.

The new file system is UDF.

Formatting 128.0 KB

0 percent completed.

Low level format of CD/DVD media failed..

Format failed."

Sorry but it is not working , can you please help.