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A valid GPT header either at the beginning or end of the disk. Due to how the GPT header is structured, the secondary starts with the partition table and ends w

A valid GPT header either at the beginning or end of the disk. Due to how the GPT header is structured, the secondary starts with the partition table and ends with the header signature in the last 8 bytes of the disk. So unlike with MBR disks, you can't just nuke the first few sectors and call it a day, you have to wipe the whole disk (or use a GPT-aware tool like wipefs).

vbezhenar 8y ago
Can I wipe first few sectors and last few sectors?
- rwmj 8y ago
  Use wipefs.
- mjevans 8y ago
  To make it look empty, yes. It's much easier to use a tool like sgdisk sgdisk -Z sgdisk --zap-all (note the capital Z)