>Hi Cetin,
>
>Thanks for your comments. Yes both drives are NTFS, the only difference being that C: is the boot drive. If I modify the the section of code that checks for the volunmeSerial being > 0, the actual number returned is negative. I'm not sure if this is an errro return or the actual volume serial.
>
>Regards
>Doug Johnston

Doug,

The value returned is an unsigned integer. Unfortunatly, VFP translates this into a signed integer. That's why the value is negative.