Safely remove USB from batch file?

Question

Can a batch file be made in windows that could safely eject the USB?So far on various sites there exist different utilities like devcon.

Solution 1

Eject Media and Remove Drive
Freeware by Uwe Sieber - http://www.uwe-sieber.de

Remove drive is what you need for USB safe removal.

Solution 2

Download RemoveDrive.exe from http://www.uwe-sieber.de/drivetools_e.html

and then use the code below.

removedrive\x64\RemoveDrive.exe F: -L

Note that

• F: is the drive you want to eject
• -L means Loop

Solution 3

Please try this script to safely remove disk, maybe useful to you :)

@echo off
cls

set tempfile="%TEMP%\tmp_disk.dsk"
cd  %SystemRoot%\system32
echo.
echo   ...:: Safely Remove Disk ::...
echo.
echo   Select the disk volume number (if the disk has multiple volumes, select any of them)
echo.
echo.
echo list volume | diskpart | findstr /C:Volume /C:---
echo.
set /p volume="   Selected volume: "
echo.

echo select volume %volume% >>%tempfile%
echo offline disk >>%tempfile%
echo online disk >>%tempfile%

diskpart /s %tempfile% | findstr /C:"not valid"

if "%ERRORLEVEL%"=="1" (
  echo   Disk has been unlocked successfully.  Try to safely remove it now...
  pause
)

del /F %tempfile%

Solution 4

While you can use powershell. Try the following:

public string GenerateScript(string driveLetter)
    {
        return "$vol = get-wmiobject -Class Win32_Volume | where{$_.Name -eq '" + driveLetter + :\\'};\n" +  
               "$vol.DriveLetter = $null\n" +  
               "$vol.Put()\n" +  
               "$vol.Dismount($false, $false)\n";
    }

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Comments

[jeb]

Nice idea, but it seems to fail. Tested with Win7x64. Got an error message The process isn't supported for removable media (translated)

[Eko Junaidi Salam]

Hmm... this's interesting... I've tested it on windows and any usbdrive like flashdisk, external hardrive, it work fine. Can you provide more information about your usb stick you've tested it ?

[jeb]

I tested with a Cruzer Blade 32GB from SanDisk

[Eko Junaidi Salam]

I've tested it too but another SanDisk product. You can use this script if your usb get locked in process handler. :)