Oracle Linux 6 does not boot after install! Blank screen…

April 28, 2011  |  linux

Today I installed Oracle Linux 6 on a Fujitsu Primergy blade, but didn’t boot. After sucessfull first part install I’ve reboot to first boot. In the GRUB menu, I’ve choose the first option kernel (UEK – Unbreakable Enterprise Kernel). Well, something suddently went wrong. The server did not boot and I only got a blinking cursor… even CTRL+ALT-DEL didn’t work. I had to power off the server and boot it again. After power it on again, I tried the normal kernel but the problem did persist. Now just a blank dark screen… nothing more!

I thought this could be a BIOS configuration problem. Some months ago I had a boot issue like this because I had floppy driver enabled on my BIOS, but I had no floppy setup in my BIOS. So the problem wasn’t what I expected to be.

After researching a bit, I found that some Fedora users had a problem like this that seems to be related with the graphics adapter… This made me think that may be the graphic booting process, that OL 6 comes with, was failing. The solution would be disabling the graphical boot (RHGB) in the grub menu. In the screen you see here clicked TAB followed by (e)dit to remove the “rhgb” word from it. I also removed the “quiet” keyword that hides the majority of boot messages before RHGB starts.

To make sure that I would not use the kernel video mode, I’ve added the “nomodeset”  keyword, which is a kernel parameter that turns off the video mode setting that comes with recent kernels and leaves the system BIOS video setting in place during boot.

After this… success! THANKS to my patience!

Read this:

nomodeset The newest kernels have moved the video mode setting into the kernel. So all the programming of the hardware specific clock rates and registers on the video card happen in the kernel rather than in the X driver when the X server starts.. This makes it possible to have high resolution nice looking splash (boot) screens and flicker free transitions from boot splash to login screen. Unfortunately, on some cards this doesnt work properly and you end up with a black screen. Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded. (Source:

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