Thread: Getting the main hardrive?

Hi, I'm using the volume serial of the harddrive for authorization of my program, I'm using the c:\ drive as default but some user do not have a c:\ drive so I need some way to check what the main hardrive is called. I'm using code like so:

Code:

DWORD dwVolSerial;
BOOL bIsRetrieved;
bIsRetrieved = GetVolumeInformation("C:\\",NULL,NULL,&dwVolSerial,NULL,NULL,NULL,NULL);
if (bIsRetrieved) 
{
	TSTR buf;
	buf.printf(_T("%u"),dwVolSerial);
	return new String(buf);
} 
return &undefined;

Any idea on how to expand on this code to also include such a check?

cheers,
CML