1
vote
1answer
101 views

CentOS only detecting 50% of ram on IBM Server

I have IBM server with 16 GB RAM installed. Initially it showed 16 GB with free | grep Mem | awk '{print $2}' but now it shows only 8116136 but it must show 16439208 When I do dmidecode ...
0
votes
1answer
31 views

Use old raid drive as boot device without data loss

There were two disks in sw-raid. There were /dev/md1 as swap, /dev/md2 as boot and a /dev/md3 with ext4. The sw-raid was disabled by stopping and removing mdadm and then zeroing the superblock on ...
0
votes
0answers
425 views

Stuck at grub prompt after a default CentOS 6 installation

I am having a very strange problem installing CentOS 6 that I've never encountered before. I've followed these same steps thousands of times before, but within the past couple weeks I've had two ...
1
vote
2answers
213 views

Which vmlinuz and initrd.img should I use for 'headless' CentOS installation?

I am pondering reinstalling a CentOS Linux server remotely, by installing CentOS' installer into /boot (GRUB) as per this tutorial: ganesh.me: Install Linux Servers Remotely I notice that there are ...
0
votes
0answers
28 views

CentOS grub.conf template?

I want to add some parameters to the kernel line in grub.conf, but I want to make sure that when the kernel is updated that those parameters persist. How is the format determined? Is there a template ...
0
votes
0answers
32 views

What is the issue with the boot setup on this raid array?

After a secure erase of /dev/sda (Samsung 840 Pro) I had to setup grub on /dev/sda2 (for some unknown reason the /boot partition is the second one). So I ran something like this: grub root(hd0,1) ...
2
votes
1answer
923 views

What is the correct way to install software RAID 1 in CentOS 6.4?

I'm going to install CentOS 6.4 on HP ProLiant ML310e Gen8 server. This server has fakeraid controller so i decided to use software raid. The problem is that i don't know how to correctly install GRUB ...
0
votes
1answer
446 views

Accidentally ran grub-install incorrectly, now have a grub prompt but no menu

tl;dr: I fat-fingered grub-install, then "correctly" re-issued it targeting the /boot filesystem on /dev/sda1 but it isn't reading grub/grub.conf unless I expressly tell it where to look using the ...
0
votes
2answers
2k views

CentOS 6 Xen guest fails to boot after 'yum update'. Kernel?

I Seem to be having an issue with a Xen guest not booting after a yum update. DomU Configuration: #kernel = '/boot/solus-vmlinuz' #ramdisk = '/boot/solus-initrd.img' bootloader = ...
4
votes
2answers
1k views

mdadm raid 1 grub only on sda

I just finished setting up a CentOS 6.3 64bit server with mdadm however a lightbulb went on and I realised grub would only be installed on the first drive which is about as much use and an ashtray on ...
0
votes
0answers
109 views

Server panic after configuring the memory usage for kdump

I tried to set up the kdump on my CentOS 5.8 system. I tried editing the /boot/grub/grub.conf and insert the line crashkernel=auto between the kernel and initrd entry. Then proceed on editing ...
2
votes
1answer
714 views

Linux server not booting after rebuilding software RAID

I have a dedicated server at 1and1 with a software RAID. I believe it's running CentOS. The hardware team at 1and1 replaced the secondary hard drive (sdb) and then I followed these instructions to ...
0
votes
0answers
259 views

Custom grub config hangs at the prompt

Please I need help with this custom grub: default=0 timeout=20 fallback=1 title Remote Install root (hd0,0) kernel /vmlinuz_remote lang=en_US keymap=us ...
0
votes
1answer
116 views

Installing a custom 'non-rpm' kernel in CentOS 6

I've built a custom kernel using kernel.org, it has no .rpm file. How do I manually: Install the Modules to /lib/modules (make moduleinstall or something?) Make the initial ramdisk Update grub I ...
5
votes
2answers
6k views

How do I set the default kernel parameters in CentOS for all existing and future kernels?

I'd like to remove the rhgb and quiet kernel parameters which are used by default when the kernel is booted in CentOS 6, but I want this to apply to all currently installed kernels as well as any ...
0
votes
1answer
149 views

Software to automate physical provisioning of GRUB, linux, windows, dualboot

Is there software that can help automate (or make it repeatable) setting up PC's or lab servers where the setup includes GRUB for bootloading multi-boot for Windows, Debian, CentOS, etc. I was ...
1
vote
1answer
2k views

How do I mount a raid disk

So I screwed up my grub.conf file on a CentOS system and I'm in recovery right now (it's only a test dedicated server). My disks are /dev/sda1 and /dev/sdb1 (RAID 1). Now I need to mount /dev/sda1 and ...
0
votes
1answer
183 views

Centos 5.5 SoftRaid Grub Installation

I did the Soft RAID 1 installation with Centos 5.5 on my server with 2 SATA 1TB disks. I followed this great guide here: http://wiki.centos.org/HowTos/SoftwareRAIDonCentOS5 However, there is one ...
1
vote
1answer
1k views

Grub Configuration for OpenVZ?

I am trying to get OpenVZ working on my server but I am having problems. I am getting the error 'Running kernel is not OpenVZ kernel.' every time I install OpenVZ. My server is running CentOS 64bit. ...
0
votes
1answer
140 views

CentOS 5.5 - passing parameters from grub to the user space

I need to add an additional title to my grub.conf file and after OS boot I need start different services depends on it What the better way to do that?
0
votes
2answers
2k views

Kernel Panic - not syncing: attempted to kill init (for VM image from a physical machine)

I had a CentOS 5.4 x86_64 machine where I imaged the primary partition with the following command so that I could run it in a VM on my local machine for testing. #dd bs=1024 count=10482412 if/dev/sda ...
1
vote
4answers
130 views

I changed boot/grub/menu.ls

I commented out a wrong line in /boot/grub/menu.ls and now it tells me kernel panic - not syncing : VFS: unable to mount root fs on unknown - block (0,0) It stops there and does nothing. How can I ...
0
votes
3answers
816 views

No Grub on VPS?

I bought a new VPS running CentOS 5.5, and I'm trying to upgrade my kernel. I've downloaded, compiled and installed it sucessfully, and now I need to set it up in the grub settings. But there's no ...
1
vote
1answer
2k views

Unable to access resume device in CentOS

I moved my CentOS soft-RAID1 drives to another box, and now it fails to boot. When I launched the boot process from the grub menu, I get the following error: "Unable to access resume device ...