Hi Anatoliy,

Thanks for your code. However I think GetVolumeInformation returns the serial number created in disk formatting and will be changed in next disk format process. What I am looking for is the permanent hardware serial number which is created by the manufacturer.

KM


>

>DECLARE INTEGER GetVolumeInformation IN kernel32;
>	STRING lpRootPathName, STRING @lpVolumeNameBuffer,;
>	INTEGER nVolumeNameSize, LONG @lpVolumeSerialNumber,;
>	INTEGER @lpMaximumComponentLength, INTEGER @lpFlags,;
>	STRING @lpFileSystemNameBuffer, INTEGER nFileSystemNameSize
>

>http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/getvolumeinformation.asp
>
>http://www.news2news.com/vfp/?function=145