# sgdisk --info 1 /dev/loop2
Warning! Disk size is smaller than the main header indicates! Loading
secondary header from the last sector of the disk! You should use 'v' to
verify disk integrity, and perhaps options on the experts' menu to repair
the disk.
Caution: invalid backup GPT header, but valid main header; regenerating
backup header from main header.

Warning! One or more CRCs don't match. You should repair the disk!

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Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
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Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: 2732E46D-C554-11E2-AD32-806E6F6E6963
First sector: 4 (at 2.0 KiB)
Last sector: 976773162 (at 465.8 GiB)
Partition size: 976773159 sectors (465.8 GiB)
Attribute flags: 0000000000000000
Partition name: ''