Install cgpt by entering the following commands in the terminal:
sudo apt update sudo apt install cgpt
Description:
GPT manipulation tool with support for Chromium OS extensions
Cgpt is a tool to manipulate GUID Partition Table from command line. It also supports Chromium OS extensions enabling you to change priority for kernel partitions.
Homepage: https://chromium.googlesource.com/chromiumos/platform/vboot_reference
Version: 0~R63-10032.B-3
Section: universe/admin