pfSense Upgrade problem

There is pfSense in the Hyper-V VM installation, currently at version 23.09.1, there is an update to 24.03, but it always ends up with an error
No Space left on device
A description of the update error messages is described here:

Probably need to increase some part of the disk for pfSense.
I increased the disk size to 32GB in Hyper-V but it didn’t show up for pfSense, I can’t do a gpart to increase the space and complete the update.

If you are using zfs then you can delete old boot environments to clear space.

Yes, thanks for this tip. I delete old Boot Environmet