Do not flag disk devices/partitions as mountable if a partition table is present under the given device/partition

This relates to Bug 2232

tdecore/tdehw/tdehardwaredevices.cpp

@@ -2631,6 +2631,10 @@ void TDEHardwareDevices::updateExistingDeviceInformation(TDEGenericDevice* exist
 			if (filesystemtype.upper() == "SWAP") {
 				diskstatus = diskstatus & ~TDEDiskDeviceStatus::Mountable;
 			}
+			// Partition tables cannot be mounted
+			if (TQString(udev_device_get_property_value(dev, "ID_PART_TABLE_TYPE")) != "") {
+				diskstatus = diskstatus & ~TDEDiskDeviceStatus::Mountable;
+			}
 			// If certain disk types do not report the presence of a filesystem, they are likely not mountable
 			if ((disktype & TDEDiskDeviceType::HDD) || (disktype & TDEDiskDeviceType::Optical)) {
 				if (!(diskstatus & TDEDiskDeviceStatus::ContainsFilesystem)) {