Every machine is different. Here's the grub that I use on 'doorstop' machines:
# If you change this file, run 'update-grub' afterwards to update GRUB_DEFAULT="0" GRUB_TIMEOUT_STYLE="true" GRUB_TIMEOUT="10" GRUB_DISTRIBUTOR="`lsb_release -i -s 2> /dev/null || echo Debian`" GRUB_CMDLINE_LINUX_DEFAULT="elevator=deadline quiet splash plymouth.enable=0 libahci.ignore_sss=1 noefi" GRUB_CMDLINE_LINUX="libata.force=noncq" GRUB_GFXMODE="1920x1200x24
It knocks a few seconds off of boot times, and shuts them down in a heartbeat.
Here's the 'systemd-analyze time' result on my Dell Dimension 3000 box, circa 2004:
Startup finished in 3.650s (kernel) + 7.044s (userspace) = 10.694s graphical.target reached after 7.008s in userspace
No joke...
Every machine is different. Here's the grub that I use on 'doorstop' machines:
# If you change this file, run 'update-grub' afterwards to update STYLE=" true" R="`lsb_ release -i -s 2> /dev/null || echo Debian`" LINUX_DEFAULT= "elevator= deadline quiet splash plymouth.enable=0 libahci. ignore_ sss=1 noefi" LINUX=" libata. force=noncq" "1920x1200x24
GRUB_DEFAULT="0"
GRUB_TIMEOUT_
GRUB_TIMEOUT="10"
GRUB_DISTRIBUTO
GRUB_CMDLINE_
GRUB_CMDLINE_
GRUB_GFXMODE=
It knocks a few seconds off of boot times, and shuts them down in a heartbeat.
Here's the 'systemd-analyze time' result on my Dell Dimension 3000 box, circa 2004:
Startup finished in 3.650s (kernel) + 7.044s (userspace) = 10.694s
graphical.target reached after 7.008s in userspace
No joke...