Partition table is kind of table which is described by operating system which contain information about logical partition present in hard drive. Many user store and use Windows OS on external drive other than one which they have on their system. But starting the system by trying to load Windows OS from the external hard drive can show error such as “Invalid Partition Table. Once this error occur then you are unable to access your data. There are many user who come across this situation and still wondering how to recover partition table in external hard drive.