New
#41
Well, somewhere on the Disk there needs to be a location to store the Partition Table information.. A GPT disk can hold 128 Partitions and that information needs to be stored on Disk...
So I believe the first reported error - based on Message - has to do with Corruption on the External GPT Disk..
This header info can not be read - and due to not being read - the PC will not Boot Properly....
It is a larger Disk and using the Clean & Convert GPT - may be an Issue - unless DATA is backed up and the Disk then Re-Structured