setup a ramdisk for slackware’s generic kernel

shrink the kernel

requirements

before you switch to the generic kernel, make sure you’re running the latest huge kernel available

assuming 15.0

slackpkg search kernel
slackpkg upgrade kernel-firmware kernel-huge kernel-modules
lilo
reboot

setup

you can now install that same version of the generic kernel and tune its boot-time modules

slackpkg install mkinitrd kernel-generic

and build the ramdisk

/usr/share/mkinitrd/mkinitrd_command_generator.sh

e.g.

mkinitrd -c -k 5.15.193 -f ext4 -r /dev/vda1 -m virtio_blk:virtio_pci_modern_dev:virtio_pci:virtio:virtio_balloon:virtio_ring:virtio_net:jbd2:mbcache:crc32c_intel:crc32c_generic:ext4 -u -o /boot/initrd.gz

ready to go

vi /etc/lilo.conf

default = generic

image = /boot/vmlinuz-huge
    label = huge
    read-only
    append = "ro console=ttyS0,115200n8 mitigations=off"

image = /boot/vmlinuz
    label = generic
    read-only
    append = "ro console=ttyS0,115200n8 mitigations=off"
    initrd = /boot/initrd.gz