Linux - resize boot partition

[If this has already been asked/answered, I didn't see it. Please just direct me to the answer. Thanks!]

I want to increase the size of my boot partition. If I copy the drive to another one, can I then (try to) increase the Boot partition size? How effective is this usually? Suggested size of boot drive (it's 20GB now).

Solution 1:

The simplest request gives the following options:

1. What size boot partition is recommended on Debian 11

256 MB / 512 MB

2. Ubuntu Boot Partition Full

256 MB / 512 MB

3. What is the recommended size for a Linux /boot partition?

Up to 1024 MiB

NOTE: Therefore, your choice for the boot partition 20G looks more than unreasonable!