Safely Eject a USB Drive

TheSaint · August 29, 2012

That's interesting, because I have one or two drives that regularly give trouble. Sometimes it appears to maybe be a memory issue, after sustained and heavy use (video stuff, etc).

guinness · June 2, 2014

If someone thinks the example isn't working, then it is. The issue is down to the Forum removing backslashes (again). Simply replace the following with ....

; "X:" -> for GetDriveType
    Local $szRootPath = $drive & ":\"
    ; "X:" -> for QueryDosDevice
    Local $szDevicePath = $drive & ":"
    ; ".X:" -> to open the volume
    Local $szVolumeAccessPath = "\\.\" & $drive & ":"

guinness · June 3, 2014

Sorry wraithdu, but I couldn't help but update the code though to use the new features of AutoIt. Great work by the way!

#include <Array.au3>
#include <WinAPI.au3>
#include <WinAPIFiles.au3>
#include <WinAPISys.au3>

Global Const $DIGCF_DEVICEINTERFACE = 0x10
Global Const $DIGCF_PRESENT = 0x2
Global Const $CR_SUCCESS = 0
Global Const $CR_ACCESS_DENIED = 0x33
Global Const $CM_REMOVE_UI_OK = 0
Global Const $CM_REMOVE_UI_NOT_OK = 0x1
Global Const $CM_REMOVE_NO_RESTART = 0x2
Global Const $CM_SETUP_DEVNODE_READY = 0
Global Const $CM_SETUP_DEVNODE_RESET = 0x4
Global Const $DN_REMOVABLE = 0x4000
Global Const $PNP_VetoTypeUnknown = 0 ; Name is unspecified
Global Enum $DRIVE_EJECT_DEVICENUMBER, _ ; int
        $DRIVE_EJECT_DEVICETYPE, _ ; int
        $DRIVE_EJECT_DEVICEDOSNAME, _ ; string
        $DRIVE_EJECT_DEVICEPATH, _ ; string
        $DRIVE_EJECT_DEVICEID, _ ; string
        $DRIVE_EJECT_DEVICEINSTANCE, _ ; int
        $DRIVE_EJECT_DEVICEINSTANCEPARENT, _ ; int
        $DRIVE_EJECT_DEVICEPARENTID, _ ; string
        $DRIVE_EJECT_ISREMOVEABLE, _ ; bool
        $DRIVE_EJECT_MAX

Global Const $tagSTORAGE_DEVICE_NUMBER = 'dword DeviceType;ulong DeviceNumber;ulong PartitionNumber'
Global Enum $DRIVENUMBER_TYPE, $DRIVENUMBER_NUMBER, $DRIVENUMBER_PARTITION
Global Const $LETTER_LENGTH = StringLen('A')
Global Const $MAX_PATH = 260

; Structures
Global Const $STORAGE_DEVICE_NUMBER = 'ulong DeviceType;ulong DeviceNumber;ulong PartitionNumber'
Global Const $SP_DEV_BUF = 'byte[2052]'
Global Const $SP_DEVICE_INTERFACE_DETAIL_DATA = 'dword cbSize;wchar DevicePath[1024]' ; Created at SP_DEV_BUF ptr
Global Const $SP_DEVICE_INTERFACE_DATA = 'dword cbSize;byte InterfaceClassGuid[16];dword Flags;ulong_ptr Reserved' ; GUID struct = 16 bytes
Global Const $SP_DEVINFO_DATA = 'dword cbSize;byte ClassGuid[16];dword DevInst;ulong_ptr Reserved'

; GUIDs
Global Const $tagGUID_DEVINTERFACE_DISK = DllStructCreate($tagGUID)
DllStructSetData($tagGUID_DEVINTERFACE_DISK, 'Data1', 0x53f56307)
DllStructSetData($tagGUID_DEVINTERFACE_DISK, 'Data2', 0xb6bf)
DllStructSetData($tagGUID_DEVINTERFACE_DISK, 'Data3', 0x11d0)
DllStructSetData($tagGUID_DEVINTERFACE_DISK, 'Data4', Binary('0x94f200a0c91efb8b'))
Global Const $tagGUID_DEVINTERFACE_CDROM = DllStructCreate($tagGUID)
DllStructSetData($tagGUID_DEVINTERFACE_CDROM, 'Data1', 0x53f56308)
DllStructSetData($tagGUID_DEVINTERFACE_CDROM, 'Data2', 0xb6bf)
DllStructSetData($tagGUID_DEVINTERFACE_CDROM, 'Data3', 0x11d0)
DllStructSetData($tagGUID_DEVINTERFACE_CDROM, 'Data4', Binary('0x94f200a0c91efb8b'))
Global Const $tagGUID_DEVINTERFACE_FLOPPY = DllStructCreate($tagGUID)
DllStructSetData($tagGUID_DEVINTERFACE_FLOPPY, 'Data1', 0x53f56311)
DllStructSetData($tagGUID_DEVINTERFACE_FLOPPY, 'Data2', 0xb6bf)
DllStructSetData($tagGUID_DEVINTERFACE_FLOPPY, 'Data3', 0x11d0)
DllStructSetData($tagGUID_DEVINTERFACE_FLOPPY, 'Data4', Binary('0x94f200a0c91efb8b'))

; http://www.codeproject.com/Articles/13839/How-to-Prepare-a-USB-Drive-for-Safe-Removal
; http://www.autoitscript.com/forum/topic/83470-safely-eject-a-usb-drive/
Example()

Func Example()
    Local $hDriveEject = _Drive('E')
    ConsoleWrite('Ejected E: = ' & _Drive_Eject($hDriveEject) & @CRLF)
    ConsoleWrite('Restarted E: = ' & _Drive_Restart($hDriveEject) & @CRLF)
    _ArrayDisplay($hDriveEject)
    $hDriveEject = 0
EndFunc   ;==>Example

Func _Drive($sDrive)
    $sDrive = _GetDrive($sDrive) & ':'
    If Not FileExists($sDrive) Then Return Null

    Local $aQueryDrive[$DRIVE_EJECT_MAX]

    Local $aReturn = _WinAPI_GetDriveNumberEx($sDrive)
    $aQueryDrive[$DRIVE_EJECT_DEVICENUMBER] = (@error ? 0 : $aReturn[$DRIVENUMBER_NUMBER]) ; Device number.
    $aQueryDrive[$DRIVE_EJECT_DEVICETYPE] = _WinAPI_GetDriveType($sDrive)
    $aQueryDrive[$DRIVE_EJECT_DEVICEDOSNAME] = _WinAPI_QueryDosDevice($sDrive)

    Local $tGUID = 0
    Switch $aQueryDrive[$DRIVE_EJECT_DEVICETYPE]
        Case $DRIVE_REMOVABLE
            If StringInStr($aQueryDrive[$DRIVE_EJECT_DEVICEDOSNAME], '\Floppy') > 0 Then
                $tGUID = DllStructGetPtr($tagGUID_DEVINTERFACE_FLOPPY)
            Else
                $tGUID = DllStructGetPtr($tagGUID_DEVINTERFACE_DISK)
            EndIf

        Case $DRIVE_FIXED
            $tGUID = DllStructGetPtr($tagGUID_DEVINTERFACE_DISK)

        Case $DRIVE_CDROM
            $tGUID = DllStructGetPtr($tagGUID_DEVINTERFACE_CDROM)

        Case Default
            Return Null

    EndSwitch

    Local $hDevInfo = DllCall('setupapi.dll', 'ptr', 'SetupDiGetClassDevsW', _
            'ptr', $tGUID, _
            'ptr', Null, _
            'hwnd', Null, _
            'dword', BitOR($DIGCF_PRESENT, $DIGCF_DEVICEINTERFACE))
    If @error Or $hDevInfo[0] = $INVALID_HANDLE_VALUE Then Return Null
    $hDevInfo = $hDevInfo[0]

    Local $tBuffer = DllStructCreate($SP_DEV_BUF)
    Local $tpSP_DEVICE_INTERFACE_DETAIL_DATA = DllStructCreate($SP_DEVICE_INTERFACE_DETAIL_DATA, DllStructGetPtr($tBuffer))
    Local Const $SP_DEVICE_INTERFACE_DETAIL_DATA_SIZE = (@AutoItX64 ? 8 : 6) ; Fix for 64-bit systems.
    Local $tSP_DEVICE_INTERFACE_DETAIL_DATA = DllStructCreate($SP_DEVICE_INTERFACE_DATA)
    Local $tDevInfo = DllStructCreate($SP_DEVINFO_DATA)

    DllStructSetData($tSP_DEVICE_INTERFACE_DETAIL_DATA, 'cbSize', DllStructGetSize($tSP_DEVICE_INTERFACE_DETAIL_DATA))

    Local $iIndex = 0, $iSize = 0
    While 1
        $aReturn = DllCall('setupapi.dll', 'int', 'SetupDiEnumDeviceInterfaces', _
                'ptr', $hDevInfo, _
                'ptr', 0, _
                'ptr', $tGUID, _
                'dword', $iIndex, _
                'struct*', $tSP_DEVICE_INTERFACE_DETAIL_DATA)
        If @error Or Not $aReturn[0] Then
            ExitLoop
        EndIf

        $aReturn = DllCall('setupapi.dll', 'int', 'SetupDiGetDeviceInterfaceDetailW', _
                'ptr', $hDevInfo, _
                'struct*', $tSP_DEVICE_INTERFACE_DETAIL_DATA, _
                'ptr', 0, _
                'dword', 0, _
                'dword*', 0, _
                'ptr', 0)
        $iSize = (@error ? 0 : $aReturn[5])

        If $iSize > 0 And $iSize <= DllStructGetSize($tBuffer) Then
            DllStructSetData($tpSP_DEVICE_INTERFACE_DETAIL_DATA, 'cbSize', $SP_DEVICE_INTERFACE_DETAIL_DATA_SIZE)
            _WinAPI_ZeroMemory(DllStructGetPtr($tDevInfo), DllStructGetSize($tDevInfo))
            DllStructSetData($tDevInfo, 'cbSize', DllStructGetSize($tDevInfo))

            $aReturn = DllCall('setupapi.dll', 'int', 'SetupDiGetDeviceInterfaceDetailW', _
                    'ptr', $hDevInfo, _
                    'struct*', $tSP_DEVICE_INTERFACE_DETAIL_DATA, _
                    'struct*', $tpSP_DEVICE_INTERFACE_DETAIL_DATA, _
                    'dword', $iSize, _
                    'dword*', 0, _
                    'struct*', $tDevInfo)
            If Not @error And $aReturn[0] Then
                $aQueryDrive[$DRIVE_EJECT_DEVICEPATH] = DllStructGetData($tpSP_DEVICE_INTERFACE_DETAIL_DATA, 'DevicePath')
                $aReturn = _WinAPI_GetDriveNumberEx($aQueryDrive[$DRIVE_EJECT_DEVICEPATH])
                If Not @error Then
                    If $aQueryDrive[$DRIVE_EJECT_DEVICENUMBER] = $aReturn[$DRIVENUMBER_NUMBER] Then
                        $aQueryDrive[$DRIVE_EJECT_DEVICEID] = DllStructGetData($tDevInfo, 'DevInst')
                        ExitLoop
                    EndIf
                EndIf
            EndIf
        EndIf
        $iIndex += 1
    WEnd
    DllCall('setupapi.dll', 'int', 'SetupDiDestroyDeviceInfoList', _
            'ptr', $hDevInfo)

    If $aQueryDrive[$DRIVE_EJECT_DEVICEID] > 0 Then
        $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Get_Device_IDW', _
                'ptr', $aQueryDrive[$DRIVE_EJECT_DEVICEID], _
                'wstr', '', _
                'ulong', DllStructGetSize($tBuffer), _ ; Was once 1024.
                'ulong', 0)
        $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCE] = (@error Or $aReturn[0] <> $CR_SUCCESS ? Null : $aReturn[2])

        $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Get_Parent', _
                'dword*', 0, _
                'dword', $aQueryDrive[$DRIVE_EJECT_DEVICEID], _
                'ulong', 0)
        $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT] = (@error Or $aReturn[0] <> $CR_SUCCESS ? Null : $aReturn[1])

        If $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT] Then
            $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Get_Device_IDW', _
                    'ptr', $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT], _
                    'wstr', '', _
                    'ulong', DllStructGetSize($tBuffer), _ ; Was once 1024.
                    'ulong', 0)
            $aQueryDrive[$DRIVE_EJECT_DEVICEPARENTID] = (@error Or $aReturn[0] <> $CR_SUCCESS ? Null : $aReturn[2])

            $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Get_DevNode_Status', _
                    'ulong*', 0, _
                    'ulong*', 0, _
                    'ptr', $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT], _
                    'ulong', 0)
            $aQueryDrive[$DRIVE_EJECT_ISREMOVEABLE] = (Not @error And $aReturn[0] = $CR_SUCCESS And BitAND($aReturn[1], $DN_REMOVABLE))
        EndIf
    EndIf

    Return $aQueryDrive
EndFunc   ;==>_Drive

Func _Drive_Eject(ByRef $aQueryDrive)
    Local $fReturn = False
    If UBound($aQueryDrive) = $DRIVE_EJECT_MAX And $aQueryDrive[$DRIVE_EJECT_ISREMOVEABLE] Then
        Local $aReturn = 0
        For $i = 1 To 3
            $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Query_And_Remove_SubTreeW', _ ; Only used if SurpriseRemovalOK is true in DEVICE_CAPABILITIES
                    'dword', $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT], _
                    'dword*', Null, _
                    'wstr', Null, _
                    'ulong', $MAX_PATH, _
                    'ulong', $CM_REMOVE_UI_OK) ; $CM_REMOVE_NO_RESTART
            If $aReturn[0] = $CR_ACCESS_DENIED Then
                $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Request_Device_EjectW', _
                        'dword', $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT], _
                        'dword*', Null, _
                        'wstr', Null, _
                        'ulong', $MAX_PATH, _
                        'ulong', 0)
            EndIf
            $fReturn = (UBound($aReturn) >= 3 And $aReturn[0] = $CR_SUCCESS And $aReturn[2] = $PNP_VetoTypeUnknown)
            If $fReturn Then
                ExitLoop
            EndIf
            Sleep(500)
        Next
    EndIf
    Return $fReturn
EndFunc   ;==>_Drive_Eject

Func _Drive_IsUSBHDD(ByRef $aQueryDrive)
    ; If the drive is a fixed drive and the path contains 'usbtor', and parent device ID contains 'USB', and IsRemovable.
    Return UBound($aQueryDrive) = $DRIVE_EJECT_MAX ? (($aQueryDrive[$DRIVE_EJECT_DEVICETYPE] = $DRIVE_FIXED) And StringInStr($aQueryDrive[$DRIVE_EJECT_DEVICEPATH], 'usbstor') And StringInStr($aQueryDrive[$DRIVE_EJECT_DEVICEPARENTID], 'usb') And $aQueryDrive[$DRIVE_EJECT_ISREMOVEABLE]) : Null
EndFunc   ;==>_Drive_IsUSBHDD

Func _Drive_Restart(ByRef $aQueryDrive)
    Local $fReturn = False
    If UBound($aQueryDrive) = $DRIVE_EJECT_MAX Then
        Local $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Setup_DevNode', _
                'dword', $aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT], _
                'ulong', 0)
        If @error Or Not $aReturn[0] Then Return SetError(@error, @extended, $fReturn)
        $fReturn = True
    EndIf
    Return $fReturn
EndFunc   ;==>_Drive_Restart

Func _GetDrive($sFilePath)
    Local $sDrive = StringUpper(StringLeft($sFilePath, $LETTER_LENGTH))
    Return _IsDriveLetter($sDrive) ? $sDrive : Null
EndFunc   ;==>_GetDrive

Func _IsDriveLetter($sDrive)
    ; Return StringRegExp($sDrive, '^[A-Za-z]$') = 1
    Return StringIsAlpha($sDrive) And StringLen($sDrive) = $LETTER_LENGTH
EndFunc   ;==>_IsDriveLetter

Func _IsDriveLetterFull($sDrive)
    ; Return StringRegExp($sDrive, '^[A-Za-z]:$') = 1
    Return _IsDriveLetter(_GetDrive($sDrive)) And StringLen($sDrive) = ($LETTER_LENGTH + $LETTER_LENGTH) And StringRight($sDrive, $LETTER_LENGTH) == ':'
EndFunc   ;==>_IsDriveLetterFull

Func _WinAPI_GetDriveNumberEx($sFilePath)
    If _IsDriveLetter($sFilePath) Or _IsDriveLetterFull($sFilePath) Then
        $sFilePath = '\\.\' & _GetDrive($sFilePath) & ':'
    EndIf
    Local Const $hFile = _WinAPI_CreateFileEx($sFilePath, $OPEN_EXISTING, 0, $FILE_SHARE_READWRITE)
    If @error Then Return SetError(@error, @extended, 0)

    Local $tSTORAGE_DEVICE_NUMBER = DllStructCreate($tagSTORAGE_DEVICE_NUMBER)
    Local $vResult = [$DRIVENUMBER_TYPE, $DRIVENUMBER_NUMBER, $DRIVENUMBER_PARTITION]
    _WinAPI_DeviceIoControl($hFile, $IOCTL_STORAGE_GET_DEVICE_NUMBER, Null, 0, DllStructGetPtr($tSTORAGE_DEVICE_NUMBER), DllStructGetSize($tSTORAGE_DEVICE_NUMBER))
    If @error Then
        $vResult = 0
    Else
        $vResult[$DRIVENUMBER_TYPE] = DllStructGetData($tSTORAGE_DEVICE_NUMBER, 'DeviceType')
        $vResult[$DRIVENUMBER_NUMBER] = DllStructGetData($tSTORAGE_DEVICE_NUMBER, 'DeviceNumber')
        $vResult[$DRIVENUMBER_PARTITION] = DllStructGetData($tSTORAGE_DEVICE_NUMBER, 'PartitionNumber')
    EndIf
    _WinAPI_CloseHandle($hFile)
    Return $vResult
EndFunc   ;==>_WinAPI_GetDriveNumberEx

Edited June 3, 2014 by guinness

yasuo · April 27, 2015

Hi there,
i want to eject the USB Drive my script is running from, i guess is will requirey to detect and close the handle of @ScriptFullPath.

however, for the beginning i will focus on the eject, wich deos not work on my win7 ent.:

#include <ejectUSB.lib.au3>
#NoTrayIcon
#AutoIt3Wrapper_Au3Check_Parameters=-q -d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
;;;EXAMPLE
Global $drive = InputBox("Eject Drive", "Enter drive (letter only):", "", " M1", 200, 130)
If @error Then Exit
$drive = StringUpper(StringLeft($drive, 1))
If Not FileExists($drive & ":") Then
MsgBox(0 + 16, "Error", "Drive not found.")
Exit
EndIf

Global $driveInfo[9] = ["Device Number", "Drive Type", "DOS Device Name", "Device Path", "Device ID", "Device Instance", "Device Instance Parent", _
"Parent Device ID", "IsRemovable"]
Global $driveArray = _QueryDrive($drive)
For $i = 0 To UBound($driveArray) - 1
ConsoleWrite("-" & $driveInfo[$i] & ": " & $driveArray[$i] & @CRLF)
Next
ConsoleWrite("-Is USBHDD: " & _IsUSBHDD($driveArray) & @CRLF)

If (6 = MsgBox(4 + 32, "Eject?", "Eject this drive?")) Then ConsoleWrite("Ejecting drive <" & $drive & ":> - " & _QueryDrive($drive, True) & @CRLF)
If (6 = MsgBox(4 + 32, "Restart?", "Restart this drive?")) Then ConsoleWrite("Restarting drive <" & $drive & ":> - " & _RestartDrive($driveArray) & @CRLF)

>"C:\Program Files (x86)\AutoIt3\SciTE\AutoIt3Wrapper\AutoIt3Wrapper.exe" /run /prod /ErrorStdOut /in "P:\OC\autoit\conti\ejectUSB.au3" /UserParams    
+>13:09:33 Starting AutoIt3Wrapper v.14.801.2025.0 SciTE v.3.4.4.0   Keyboard:00000407  OS:WIN_7/Service Pack 1  CPU:X64 OS:X64    Environment(Language:0409)
+>         SciTEDir => C:\Program Files (x86)\AutoIt3\SciTE   UserDir => C:\Program Files (x86)\AutoIt3\SciTE\AutoIt3Wrapper
>Running AU3Check (3.3.12.0)  params:-q -d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6  from:C:\Program Files (x86)\AutoIt3  input:P:\OC\autoit\conti\ejectUSB.au3
+>13:09:33 AU3Check ended.rc:0
>Running:(3.3.12.0):C:\Program Files (x86)\AutoIt3\autoit3.exe "P:\OC\autoit\conti\ejectUSB.au3"    
--> Press Ctrl+Alt+Break to Restart or Ctrl+Break to Stop
-Device Number: 1
-Drive Type: 2
-DOS Device Name: \Device\HarddiskVolume5
-Device Path: \\?\usbstor#disk&ven_jetflash&prod_transcend_16gb&rev_8.01#7q9wxdi5&1#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}
-Device ID: 2172
-Device Instance:
-Device Instance Parent:
-Parent Device ID:
-IsRemovable:
-Is USBHDD: False
"P:\OC\autoit\conti\ejectUSB.lib.au3" (281) : ==> Variable used without being declared.:
$res = DllCall("setupapi.dll", "dword", "CM_Query_And_Remove_SubTreeW", "dword", $DevInstParent, "dword*", 0, "wstr", "", "ulong", 260, "ulong", $CM_REMOVE_UI_OK)
$res = DllCall("setupapi.dll", "dword", "CM_Query_And_Remove_SubTreeW", "dword", ^ ERROR
->13:09:36 AutoIt3.exe ended.rc:1
+>13:09:36 AutoIt3Wrapper Finished.
>Exit code: 1    Time: 4.048

any idea?

ResNullius · October 6, 2015

@guinness,

Your rewritten script no longer works with the current 3.3.14.2 or beta 3.3.15.0 AutoIt versions.

The latest version I can get it to work with is release 3.3.10.2 (I don't have all the betas since then, but the ones I do have don't work either).

I've tested on Win 7 Pro x86 and x64 versions on different physical machines..

If you run the script with both using your built in example, you will see that when you hit the _ArrayDisplay($hDriveEject) that some info is missing running with later versions of AutoIt.

Further debugging shows that 3.3.10.2 yields the following values in my testing:

$aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCE] = USBSTOR\DISK&VEN_KINGSTON&PROD_DATATRAVELER_3.0&REV_PMAP\00147854488EBE51E75C40C2&0
$aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT] = 2472

and any AutoIt version after that that yields no values for those:

$aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCE] =
$aQueryDrive[$DRIVE_EJECT_DEVICEINSTANCEPARENT] =

Looks like something failing with the DLL call

If $aQueryDrive[$DRIVE_EJECT_DEVICEID] > 0 Then
        $aReturn = DllCall('setupapi.dll', 'dword', 'CM_Get_Device_IDW', _
                'ptr', $aQueryDrive[$DRIVE_EJECT_DEVICEID], _
                'wstr', '', _
                'ulong', DllStructGetSize($tBuffer), _ ; Was once 1024.
                'ulong', 0)

but I can't figure it out.

Perhaps you can cast your expert eye over it, and confirm whether it is indeed a problem. I seem to recall it stopped working with the 3.3.11.0 beta, but couldn't find anything in the change logs that set would lead me to the solution.

Thanks

ResNullius · October 29, 2015

OK, found the problem: with versions of AutoIt after 3.3.10.2 you have to do an explicit DllOpen() for setupapi.dll before any of the subsequent DllCall() statements

Found the solution in a post by Biatu https://www.autoitscript.com/forum/topic/77731-device-management-api/?do=findComment&comment=1186109 in another thread.

Deye · February 5, 2016

Hi,

I save the "$aQueryDrive" Array to a file when _Drive_Eject succeeds
And then exit the script

With a new command script I want to restart the drive
So I load the identical array from the saved file with the function _Drive_Restart($array)
but the drive wont restart

so I'm guessing that there are extra values that need to be saved and loaded when using this function

as When using both functions in 1 run everything runs as expected

Edit:

It seems that some of these DDK functions are possibly outdated and aren't recommended for use by newer ddk
functions For example: CM_Setup_DevNode

Edited February 5, 2016 by Deye

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