>Hi,
>
>Tried using this API but results are confusing. I have 2x10Gb Quantum drives in my WIN NT box. The API call will return the serial number of D: but not C:.
>
>Anyone have any ideas (Returns vol. labels for each drive OK).
>
>Regards
>Doug Johnston

Doug,
Probably it's a NTFS drive. ASM code returns what dir returns but unfortunately fox no more supports loading-calling asm files.
GetVolumeInformation probably is doing it the right way and getting from correct offsett of BPB depending on drive type. On NTFS it's on offsett 48 and a LONGLONG value while in FAT32, FAT16 on offsett 43 and a dword value.
Probably converting returned value from a 64bits value you would ge that number too.
Cetin