Why can't I reformat my 3TB drive after plugging it into a system running MacOS?


Instructions for erasing a drive larger than 2TB so that it can be reformatted.

MacOS will reformat drives larger than 2TB with a GUID Partition Table (GPT). Windows cannot reformat the drive until it is fully erased.

See Document ID: 207837 for details on how to erase the drive so it can be reformatted in Windows.





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