Cannot upgrade Plesk or install a package: dpkg: error processing package linux-image-generic – error 25 : Write error : No space left on device

Symptoms

• Unable to upgrade Plesk or install a package.

• Running the apt-get install -f command results in the following error:

  dpkg: error processing package linux-image-5.15.0-75-generic (--configure):
  update-initramfs: Generating /boot/initrd.img-5.15.0-76-generic
  I: The initramfs will attempt to resume from /dev/dm-0
  I: (/dev/mapper/vg00-lv00)
  I: Set the RESUME variable to override this.
  zstd: error 25 : Write error : No space left on device (cannot write compressed block)
  E: mkinitramfs failure zstd -q -1 -T0 25
  update-initramfs: failed for /boot/initrd.img-5.15.0-76-generic with 1.
  run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
  dpkg: error processing package linux-image-5.15.0-76-generic (--configure):
  installed linux-image-5.15.0-76-generic package post-installation script subprocess returned error exit status 1
  Processing triggers for libc-bin (2.35-0ubuntu3.1) ...
  Errors were encountered while processing:
  linux-image-5.15.0-75-generic
  linux-image-5.15.0-76-generic
  needrestart is being skipped since dpkg has failed
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  Launching component and product checkers...
  Downloading file report-update: 100% was finished.
  Downloading file pool/PSA_18.0.53_12045/examiners/py_launcher.sh: 100% was finished.

• The boot partition is at 100% of use with zero available size:

  # df -h /boot
  Filesystem Size Used Avail Use% Mounted on
  /dev/sda1 1G 1G 0G 100% /boot

Cause

The /boot partition has no space left to proceed with the needed installation or upgrade.

Resolution

Resize the /boot mounted partition to add some free space.