This partition cannot be modified because it contains a partition table; please reinitialize layout of the whole device.(udisks-error-quark,11)
Whatever partitioning software you are using, there should be a top-level option to create a new partition table. This is what you need to do based on that error message. But note that doing so will effectively erase all the current content on the device, so it may not be what you want to do.