What results you have if you run this?

DECLARE GetVolumeInformation IN WIN32API ;
STRING @lpRootPathName, ;
INTEGER @lpVolumeNameBuffer, ;
INTEGER @nVolumeNameSize, ;
STRING @lpVolumeSerialNumber, ;
DOUBLE @lpMaximumComponentLength, ;
DOUBLE @lpFileSystemFlags, ;
STRING @lpFileSystemNameBuffer, ;
DOUBLE @nFileSystemNameSize

lpRootPathName = "c:\"
lpVolumeNameBuffer = 0
nVolumeNameSize = 0
lpVolumeSerialNumber = ""
lpMaximumComponentLength = 0
lpFileSystemFlags = 0
lpFileSystemNameBuffer = ""
nFileSystemNameSize = 0

?GetVolumeInformationA(@lpRootPathName, @lpVolumeNameBuffer, @nVolumeNameSize, @lpVolumeSerialNumber, @lpMaximumComponentLength, @lpFileSystemFlags, @lpFileSystemNameBuffer, @nFileSystemNameSize)

?"lpRootPathName=",lpRootPathName
?"lpVolumeNameBuffer=",lpVolumeNameBuffer
?"nVolumeNameSize=",nVolumeNameSize
?"lpVolumeSerialNumber=",lpVolumeSerialNumber
?"lpMaximumComponentLength=",lpMaximumComponentLength
?"lpFileSystemFlags",lpFileSystemFlags
?"lpFileSystemNameBuffer=",lpFileSystemNameBuffer
?"nFileSystemNameSize=",nFileSystemNameSize