How to reduce external disk size - GCP

Question

I am trying to reduce external disk size. I have a external disk with 2TB and wanted it to reduce it to 1 TB.

I tried using snapshots and but it does not allows to reduce to 1TB.

My mount -> /dev/sdb

Answer 1

As per google official Docs You can only resize a persistent disk to increase its size. You cannot reduce/decrease the size of a persistent disk.

Refer to this SO Link might be helpful.