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GPT HDD Cannot modify partitions/read data after enclosure change.
Windows ver. 10 20H2 19042.685
I have a Sabrent external enclosure I have been using for years as a storage device. It contains a WD Red 4TB drive. It was formatted in GPT because of the MBR's 2 TB limit. When I place the drive into a different branded external enclosure, it only shows a 2TB partition with the remaining 1.7TB as unallocated. I cannot change the drive in any form or fashion using Windows built-in disk manager as it's all grayed out. I've had this happen in the past and I know I can use diskpart to wipe the drive and start over, which requires me to backup my data, and then format GPT using the new enclosure then copy the data back over. Or I can use 3rd party disk management software but the outcome is the same. Windows is some how making this GPT partition GPT Protected and I don't format it that way. I don't get what causes GPT Protective to activate and I really don't need it.
So my question is why does this GPT Protective kick in?
Can I convert GPT Protective to GPT non protective without formatting?
Thanks!
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I went ahead and performed a clean on the disk using disk part which removed the GPT Protective header. But here is a new problem I am bumping into. When I format it with the brand Fideco HDD enclosure and then move it to the Sabrent HDD enclosure, the drive becomes GPT Protective. But then I move the drive back to Fideco the drive is only GPT. And when I format it using the Sabrent drive and then move the drive over to the Fideco drive, it is now GPT Protective. If I format the HDD in the Sabrent enclosure then move it over to my backup Sabrent enclosure which is the same model, it works fine. So physically moving a drive that is formatted in GPT becomes GPT Protective when moved to another branded enclosure. Is that right? Why would this happen? If the enclosure fails I need to be able to take the drive out and place it into another enclosure without losing data. But that doesn't seem to be the case if the drive just locks up into GPT Protective mode when it gets moved to another enclosure. Am I missing something?