Hello!
After I install ubuntu 10 I couldn't make enter into # init 6 ??gdm-password wasn't found in ubuntu 10 ,only found gdm .What is happened ?

init 6???

init 6 is for restarting your machine?
so what is that you didn't make to?

are you saying about init 5?

here this might clear your confusion
http://en.wikipedia.org/wiki/Runlevel

Almost all Debian derivations (and Ubuntu is one of them) use only the runlevels 0,1,2 and 6 by default. 0 and 6 are reserved for system shutdown and reboot, 1 is single user mode and 2 is the default multi-user mode with network and GUI (if you have a display manager installed). Runlevels 2-5 are available, but are the same. So please specify your question, what is it that you want to achieve?

By the way, your threads will draw more attention if you use thread-names resembling the topic of your thread. Just a "Plzz" will cause that many members will not be willing to look at your thread, especially if you use text-speak. Keep in mind, all of us are trying to help here in our free time, no one is paid. Why should we have a look at a thread if the poster isn't even making the effort to name it appropriately (and read the hints on the page for creating a new thread)?

llmi187
it would help if you spell out your words and DID NOT use "text speek"
there is no word "plzz" in ANY dictionary

Title edited for reasons explained above. Please refrain from using non-descriptive titles in the future and please ask questions clearly! I'm not even sure the title matches your actual question.