Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//etc/initramfs-tools/update-initramfs.conf

 #
# Configuration file for update-initramfs(8)
#

#
# update_initramfs [ yes | all | no ]
#
# Default is yes
# If set to all update-initramfs will update all initramfs
# If set to no disables any update to initramfs beside kernel upgrade

update_initramfs=yes

#
# backup_initramfs [ yes | no ]
#
# Default is no
# If set to no leaves no .bak backup files.

backup_initramfs=no