This bug report is devolving a bit into a general help forum for gparted. It seems that the core issue of gparted showing disks as being unallocated when there is an error in the partition table has been fixed and it now indicates an error with an exclamation mark, and provides details on what the error is. Therefore, I am marking this bug as fixed.
This bug report is devolving a bit into a general help forum for gparted. It seems that the core issue of gparted showing disks as being unallocated when there is an error in the partition table has been fixed and it now indicates an error with an exclamation mark, and provides details on what the error is. Therefore, I am marking this bug as fixed.