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How could I get a USB Flash disk's drive letter?

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  #1 (permalink)  
Old 01-26-2007
=?Utf-8?B?Q2h1WXVhbg==?=
 

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How could I get a USB Flash disk's drive letter?
In XP, I used these functions to get a usb device volume to compare, but it
cannot work in Vista
SetupDiGetClassDev ==> get GUID_DEVINTERFACE_VOLUME device
SetupDiEnumDeviceInterface ==> get all volume device
CM_Get_Parent twice ==> get device id for USB
GetVolumeNameForVolumeMountPoint ==> compare

Might anybody help me?
Thx,

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  #2 (permalink)  
Old 01-26-2007
Uwe Sieber
 

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Re: How could I get a USB Flash disk's drive letter?
ChuYuan wrote:
> In XP, I used these functions to get a usb device volume to compare, but it
> cannot work in Vista
> SetupDiGetClassDev ==> get GUID_DEVINTERFACE_VOLUME device
> SetupDiEnumDeviceInterface ==> get all volume device
> CM_Get_Parent twice ==> get device id for USB
> GetVolumeNameForVolumeMountPoint ==> compare
>
> Might anybody help me?


Yes, this has changed in Vista. DRIVE_REMOVABLE drives are now handled
as DRIVE_FIXED drives are under XP.
Have a look at my sample project, it explains it:
http://www.codeproject.com/system/Re...veByLetter.asp


Uwe


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