/**
 @internalComponent
 */
void CCachedDriveInfo::ConstructL(RFs& aFs)
	{
	// Goes through each drive, and stores whether or not it is available, 
	// the drive's attributes, and the drive's media attributes
	for (TDriveUnit drive(EDriveZ); drive >= EDriveA; drive = TInt(drive) - 1)
		{
		ASSERT(aFs.IsValidDrive(drive));
		
		TDriveInfo driveInfo;
		User::LeaveIfError(aFs.Drive(driveInfo, drive));
		iDriveAndMediaAttributes[drive].iDriveAttributes = driveInfo.iDriveAtt;
		iDriveAndMediaAttributes[drive].iMediaAttributes = driveInfo.iMediaAtt;
		iDriveAndMediaAttributes[drive].iMediaType = driveInfo.iType;
		}
	}