Udev and rebuilding kernal

Question

hi, i just installed arch for the fouth time. I am trying out different ways to run the kernal. I have ide, but no raid or sata, so I removed the ones that i do not need, but now when i boot it does not mount the drive and i cant get to root. i need to rebuild the kernal but i dont know how.
also there is a big lag starting udev uevents. i tried puting pci=conf1 and then pci=nobios at the kernal line but they do not stop the lag. i cant find a solve at this board.

Answer 1

You know, if you don't know what you're doing with this, you should probably either NOT be messing with it, or at least know how to debug things.
For starters, your mkinitcpio image has "base udev ide". This is fine, but if you're trying to minimize modules, you did just the opposite:
$ mkinitcpio -H autodetect
Help for hook 'autodetect':
This hook shrinks your initramdisk to a smaller size
by autodetecting your needed modules. Be sure to verify
included modules are correct and none are missing.
This hook must be run before other subsystem hooks in
order to take advantage of auto-detection. Any hooks
placed before 'autodetect' will be installed in full.
In addition, you removed the filesystems hook, so there are no filesystems there, and thus they can't be mounted
$ mkinitcpio -H filesystems
Help for hook 'filesystems':
This hook is responsible for loading filesystems for the root device.
Detection will be done at runtime. If you would like to minimize the
modules installed in the image, add the autodetect hook too.
Further more, if you REALLY want to minimize the set of modules and the hooks in mkinitcpio, the config file /etc/mkinicpio.conf actually explains what to do:
# MODULES
# The following modules are loaded before any boot hooks are
# run. Advanced users may wish to specify all system modules
# in this array. For instance:
# MODULES="piix ide_disk reiserfs"
MODULES=""
# Examples:
# This setup specifies all modules in the MODULES setting above.
# No raid, lvm2, or encrypted root is needed.
# HOOKS="base"
Now, after all this is said and done, I'm still going to recommend you do not edit this image and use the default. This is boot you're messing with and if you don't know what's going on under the hood, you have the potential to make your machine unbootable.