X is not installed. I removed rhgb and quiet and replaced that with nomodeset, now i can boot. I am just wondering why the rescue/diagnostic mode did not help me in this case and turned black too. And i wonder what i have to do to boot without nomodeset. Am 16.05.2016 um 16:45 schrieb m.roth at 5-cent.us: > Earl A Ramirez wrote: >> On 16 May 2016 12:13, "Oliver Zemann" <oliver.zemann at gmail.com> wrote: >>> Hi, i just installed CentOS 7.2 on my little "server" but i get a black >> screen during boot. It is a Asrock Am1h-itx mainboard with an AMD 5350 CPU >> (onboard graphic). >>> I created a raid 6 but i dont think thats the problem, as the boot >> process goes pretty far. I would even say its going until X should start, >> but it is a server install, so i guess there is no X. >>> Can someone tell me what could i do to get more information? Is there >> some kind of nomodeset param available for the grub cmd line param which i >> could try? >> Yes you can use nomodeset, are you able to boot with the diagnostic kernel >> which has minimum display requirement? > I'd also suggest several things: > > 1. If it's a server, why do you need X? > 2. If you do, then I'd start out by having it come up in runlevel 3, *not* 5, > and then as root I'd run startx, and see what error messages there are. > Doing this gives you a much more controlled environment in which to > debug the X issues. > 3. One final thought: what do you get when you do yum grouplist - what > X or Desktop groups are installed? > > mark > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos