Questions and Answers
I played around with the default runlevel, and now my machine reboots all the time. What can I do?
Enter linux single at the LILO prompt, and press Enter to boot into single user mode. Edit the file /etc/inittab and change to the default runlevel to something sane. 3 should normally be safe.
My Machine halts just after booting
See Question 1, above.
I scheduled some services to be run in runlevel X using , so why aren't they working?
If you're using SuSE or Delix (DLD) distributions, you also have to edit a distribution specific file in /etc. Please have a look at the manual of your distribution for details.
The approach to starting services used by the above mentioned distributions makes configuration of services easy for the proprietary configuration tools these distributions provide, but it is unfortunately non-standard. The authors plan to write a generic extension for this approach some time in the future, but don't hold your breath.
If you're using a different distribution, please check you have all the config files needed by the service, and whether they are in the correct locations. Some daemons for example Apache, (aka httpd) just die silently if their configuration files are missing or misconfigured.