the world explodes.
this time i just get a cursor in the top left and no information :)
grub2?
yip
have you seen it before?
nope
but good luck getting grub2 to do anything useful
weirdly i found the fastest sata drives i've ever seen in an old server
I've spent hours learning to configure it to change the damn default kernel
oh that's quite easy
if you know how tell me
was about to cut and paste
but hit the tab up top
hangon
#GRUB_DEFAULT="Arch Linux, with Linux 3.19.0blink"
you do something like that
with just the name
where? it's got like 20 config files now
in /etc/default/grub
then you update your grub
how?
in arch it's grub-mkconfig -o /boot/grub/grub.cfg
in ubuntu it's update-grub
i suspect grub-mkconfig -o . .. etc will work on both
and it seems to be grub2-mkconfig on rhel
looks like i have to move my cables around
the bios doesn't like booting from 3rd disk
heh
yeh it can vary a bit which is why i didn't try to say how :)
yeah and the only docs are in random places on google unfortunately
heh
make install in the kernel sources knows how to modify the config
yeah i'm not a huge fan but it tends to work ok when it works.
(yes I work on the kernel but don't know how to set the default)
ahh i just copy mine to right place and do update-grub / grub-mkconfig
yeah it took me a little digging
it actually changed :/
ubuntu used to have this annoying default of using savedefault and it would always wait for a key press
because it couldn't update the save thing.
otherwise lots of things like to default to newest kernel
which if you're fiddling with kernel stuff is annoying :)
I think it tries to remember what you selected at the last boot prompt
yeh that used to be the case
rhel is perpetually old
think people generally moved away from that
arch has #GRUB_SAVEDEFAULT="true"
but i think it defaults to false.
oh it may still save
but that means I have to walk down the hall to the servers and hook everything up to toggle it
you have to set that GRUB_DEFAULT to the saved entry if you want that  think.
yeah
have you got AMT?
I don't have a savedefault line
we have something based on xcat
it doesn't work very well
AMT let's you do serial console on cheap hardware :)
like desktops
so uhh in theory you can have grub output to serial
and you can just access that over network
in practice grub has a bug :/
this thing stops and says waiting for ISOL or something 75% of the time you use it
oh
it's a proper server?
oh yeah
desktops tend to boot quicker
if you're playing with kernel stuff
like my hp 6300 sff boots fast.
oh that's another source of unending annoyance
yes :)
I hate dell's BIOS
the damn thing stops and waits for a keypress sometimes
hahaha
i've been thinking about getting another hp 6300
we've got a monitor in the rack but it's just a little too short
they're a lot more stress free for tesing stuff hah
the cable I mean
is it server?
all dell servers have ipmi support for serial redirection and shit at least
so they tell me
sometimes I can do this work in a VM
That's what she said!!
yeh that'd be easier
you coudl use vt-d?
if you need access to pci-e card
but you need to test with real hw interrupt timings and such
nope.. fs driver
ahh
cool
difficult concurrency bugs...
and linus hasn't even yelled at us once