How do i find out the exact kernel parameters (from the grub config file) when the boot loader is corrupt. Seems like a catch 22 that I need the exact boot parameters when I cant get to a prompt to read the grub.conf file to being with.
View 2 RepliesI am a Windows 7 user. I have two machines a laptop & a new bench top. Both machines run & boot Windows 7 very well. I use a very good program to clone my Hard Drive to an external USB drive. called Macrium Reflect. It is free and is a dream to use & very fast. This program creates a Linux based boot disk, which will allow you to find a backup clone file on an external drive to restore your hard drive. It works a treat on my laptop & has saved my bacon many times when I have messed things up fiddling with the registry etc.
The problem I am having is that my new desktop will not boot from the start up CD & returns the error kernel panic,not syncing cpu context corrupt. & then just tries to reboot again. I don't know what this problem relates to whether it is the computer hardware or the Linux CD or both. My laptop with the same OS does not have a problem, It is an Acer Aspire 5920G with 1.6ghz Intel dual core processor & 2gig Ram. The bench top has an Intel Dual core 3.3ghz processor, Zotac mother board & 4gig of Ram. both machines are running 32 bit OS.
I have browsed through the posts on this forum with people having the same error at boot, but as I am not using Linux & only using a boot CD I didn't think it appropriate to but into their threads. So I am hoping if some one can tell me is this a hardware issue or a Linux/New dual core CPU/ or Bios/Mother board issue. If it is a Linux issue then my Laptop surely would not boot would it? My bench top is only a week old and guaranteed, should I be sending it from Adelaide back to Sydney(purchased online from MWave) for fault inspection? or just take to a local Technician for a diagnosis. I am not having any hardware problem running Windows 7.
I installed ubuntu using wubi and then I tried installing grub 2 but it failed. I need a way to reinstall the mbr sp it will load the windows 7 loader from the first partition.
View 1 Replies View RelatedUbuntu 10.04 Gnome IBM Thinkpad 600e.I am trying to get sound going in my 600e which has the wrong chips in the sound card. I found some notes from 2008 that said in one of the steps to add the following to my kernel boot parameters: noapci nolapci notsc acpi=off pnpbios=off pci=noacpi
It said to hit the Esc key when I see the Grub Count on boot up to get into the kernel boot parameter's editor. However, I am not seeing any Grub Count and pressing the Esc key every second during boot up doesn't seem to get me there either. I have been searching for how to edit the boot parameters but no luck so far.
My disk partitions are as following:
Disk /dev/sda: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x58b258b2
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There already exist an os XP before my installing of ubuntu.When I installed my ubuntu 9.10, I selected to install grub2 on the logical partition sda7. But when I typed command sudo dd if=/dev/sda7 of=mbr bs=512 count=1, I found that the file mbr was eerily full of zero bytes. How does this happen? Or grub2 can't be installed on a logical partition? But it works very well along with win7 rather than XP.
We just doubled the RAM on our RHEL 4 production servers...Oracle from 16gb to 32gb and Apache/JBoss from 8 to 32 gb. I am trying to figure out how to get the biggest bang from the increased RAM. Should kernel.shmmax be upped to be 50% of the 32gb....from its current 8gb? I need to create the largest possible SGA and was unable to do so, apparently because the kernel.shmmax value had gone unchanged.
And for the JBoss web servers, also RHEL 4, and particular kernel changes which can take advantage of the increased RAM and provide an immediate performance improvement?
I successfully installed Fedora 11 from the DVD iso. At the end, the installation program prompts me to reboot the system. But when the boot loader appears after rebooting, there are only the old entries.
I have 2 IDE disks and one sata disk. The first IDE disk is hd0, the second IDE is hd1. The SATA disk is hd2. In the setup, I selected hd0 to install grub. Fedora 11 was installed on the SATA disk (hd2).[edit] I forgot to say, that Fedora 10 is on /dev/sda and Fedora 9 on /dev/sdb
I recently installed Win 7 in a 4 partition hardrive. sda1 was some recovery partition. sda2 said "System Reserved". sda3 was my ext4 ubuntu partition. sda4 was my win7 partition. When I installed win7 I could only boot to win7 so I got onto ubuntu's tut for recovering grub and I attempted to recover it and I think I failed. When I boot I just go to a black screen. I since then deleted my sda1 & sda2 partitions (I really hope system reserved was not needed.) I'm still not 100% sure how the bios knows to boot straight to grub when it boots. What is the first thing on the hard drive that a bios looks for?? Anyways, the only access I have to a functioning comp is through a 10.04 live cd.
View 2 Replies View RelatedI installed unetbootin, and picked linux mint because i heard mint is for beginners.I use HP mini, and connected USB drive.after installation is completed, restart machine, and changed boot order,this was on screen;"Invalid or corrupt kernel image"boot:press tab key for options.
View 1 Replies View RelatedFirst time trying anything like this. I'm running a Abit NF7 with a silicon image 3112 that's support was broken in 2.6.35. I get a kernel panic when VFS can't find the root partition, I can't remember the exact line (can't log it, root isn't mounted yet) but it says something like sata1: link down (sstatus 0 scontrol 0). I think there might be a more telling error message before, but it flies by too fast to see or capture with my camera video recorder.
There's a patch that reverts back to when there was a delay in /drivers/ata/libata-sff.c in the function ata_sff_tf_load, by calling ata_wait_idle(ap) which fixes the issue for some people but not my system. I don't know anything about what I'm doing, but I thought I'd go through and add printk's in each function in sata_sil and see how far the device was initialized. I did this but they all happen early in the boot that flies by. Is there any way to add a pause like the "more" command? [URL]
Assume I am sitting in front of a runnning CentOS.How can I find out the EXACT version of this installation?I am not (only) talking about the major release (e.g. 5) but the sub release (5.1 or 5.2 or 5.3 or...)The about box shows something about Gnome but not the details for the CentOS.
View 1 Replies View RelatedAll my statements are prefixed with an * ----before my text.*re's the story so far.....I've got a third party software that I'd like to upload to my dreamhost account. It prevents people stealing your download links, and it demands an IonCube loaderfor it to work.*---I'm new to all this and I don't understand when to write what commands in Shell tget an IonCube loader in my dreamhost account.
1. Which operating system you are using?
=>Linux
2. Which PHP version you are using?
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I have a generic monitor which has problems with many Linux distros. We can boos Sugar on a Stick v2 by pressing <tab> at the Sugar splash screen and adding the boot parameter "nomodeset". I'm handy enough to do this, but my wife, well, not so much. So is there a way to make that boot parameter permanent?
View 1 Replies View RelatedI have a sysctl.conf that has the following in it:
kernel.exec-shield-randomize = 1
kernel.exec-shield = 1
When I grep kernel.exec-shield I get both line, hence I keep over writing the kernel.exec-shield-randomize in my script because it finds them both for my sed commend.
How can I get an exact match with either sed/awk/grep in shell so I can do a find and replace?
Example: sed 's/^kernel.exec-shield =.*/kernel.exec-shield = 1/g' /etc/sysctl.conf will replace BOTH lines
Example: grep "^kernel.exec-shield" find both line and I want it to find only the exact line.
I'm trying to find exact matches of some users in the /etc/passwd file using "grep -w", but it doesn't always work. For example, I have the following users:[URl].. So, let's say, I want to search for the user "stewart" (which doesn't exist)
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I'm trying out puppy linux, as I have an old system, and the new Ubuntus do not work on it.
Anyway,I cannot boot from my hard drive but only from the floppy.I'm just not too keen on always booting from the floppy.
Here is the Menu.ls file:
I have a strange problem with RHEL4.7, with kernel 2.6.9-78.
I cannot set any kernel parameters by editing sysctl.conf file and run sysctl -p, everytime the old value appears, while it was possible before.
I tried to edit files under /proc by using vi when trying to save it gives me: E667: Fsync failed!
While echo 1>/proc/sys/net/ipv4/ip_forward also cannot edit the file.
Also I mounted proc device on another mount point:
# mount -t proc proc /mnt
I am installing Ubuntu 11.04 alongside Windows 7 and am being asked to select which device for boot loader installation. I have 7, called '/dev/sda *blank* through 7' (don't have a sda4) Should I just take the default (first one?)
View 1 Replies View RelatedBottom line first: Is there a GUI or otherwise friendly tool to modify the kernel parameters? One that will give help on a highlighted parameters?
Now as to my reason for this question:
In preparing for an Informix installation, I may need to change some kernel parameters. I could follow the advice of G�rard BIGOT from a couple of years ago at this URL. However, messing with the kernel this way, by directly editing /etc/sysctl.conf, is a bit scary. I have already backed up the current one and started editing according the Informix machine notes. However, I have commented out my new settings. [:Chicken]
The scariest aspect of this is that the notes recommend settings to kernel parameters that I do not find in /proc/sys/kernel. for example, it recommends setting SHMMIN to 1 but when I can /proc/sys.kernel/shmmin, there is no such file. (I did find shmmax.) Similarly for the very logical shmseg (max number of shared memory segments) - not found. I am afraid to add these into sysctl.conf if the equivalent pseudo-files don't exist.
Additional question: Where [on-line] do I find all kernel parameters documented? This is so that I am more certain of what I am doing instead of relying on my memory. For example, I don't recall the names of the parameters that control Kernel-Asynchronous I/O (KAIO) events.
We're using 10.10-server. We are trying to make grub boot changes permanent. I've already looked at thread [URL]. We updated /etc/default/grub, and update-grub propagates those changes into /boot/grub/grub.cfg, but not into menu.lst. It appears to use menu.lst as the source at boot, so our change doesn't show up as a linux parm.
View 3 Replies View RelatedI have installed grub2 on a flash drive to boot some os's that I want to carry around. But in grub.cfg when i put this:
Code: menuentry "BackTrack Persistent" {
set gfxpayload=1024x768
linux/backtrack/boot/vmlinuz BOOT=casper boot=casper persistent rw quiet
initrd/backtrack/boot/initrd.gz
} it does exactaly the same thing as this
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I'm thinking of filing a bug report but I want to make sure i'm not doing something wrong first.
Can I separately install a third party boot loader which can boot both Windows and Linux (Ubuntu) . I want to use a boot loader other than the boot loaders which come with these operating systems. I am trying this out of curiosity.
View 4 Replies View RelatedI have 2 os redhatlinux 5.1 and windows xp. is it possible to remove grubboot loader.
View 3 Replies View RelatedI want to start to play with "homemade" kernels. (To get some experiences in this subject). I want to do this step-by-step. I have already read a lot about this. I have a Fedora 10 running. So I want to start with this. I have read that there is a "special" way to create a kernel for Fedora. [URL] OK. I understand this +/-. When you build a new kernel with an other version number, you have to rebuild all the modules with this new kernelversion, and you have to install these also.
But : I want to start with modify only some parameters in my kernel config. Do I need to rebuild and re-install the modules also? Will it not be enough to rebuild only the kernel? (vmlinuz) Where can I find some information about the options I can disable in my kernel to speedup my system? (boot process ed). I want to suppress the loading of unneeded modules. I want to understand the options in menuconfig (and there are a lot of options ! ! )
Using NetBootin, I am able to store iso(Open Suse 11.2) image into PenDrive. When I am trying to install from Pen drive, am getting below error message above boot prompt after selecting default option from Unetbootin Screen:
Invalid or corrupt image
Boot:
Actually during booting (after I selecting Install from USB), am Getting NetBootin blue screen in which there are options like "Default", "Linux", "Rescue" and "Memory Check". I tried with linux option and observed screens like select Language and so on. But I didn't tried it fully because am having my own "autoyast" configuration file in xml.
I would like to install suse 11.2 iso as per my config as below:
Boot: linux autoyat=usb///config.xml
Please let me know how to overcome from "Invalid or corrupt image" error
I've got the latest version of Ubuntu on my machine.My Linux partition is ext4, so I need to use a Linux boot loader capable of booting from ext4.Also, I want to be able to use the UUID of my partition instead of specifying "/dev/sda3".Right now I'm using the Grub2 (or whatever the f*** it's called) that comes with Ubuntu. It's the ugliest boot loader you'll ever see, the configuration file is disgusting.So with that in mind, I'd like to change boot loader.Lilo would be OK but I can't seem to get it to boot from ext4.The older version of Grub was fine too but again I don't think it can boot from ext4.
View 2 Replies View RelatedI need to install linux (with Grub) un a disk with windows 7 loader (i have 2x choice on that loader and i need to use it).
I tried to dig to find out some methods but nothing.
It's safe? It's better to install Grub on another partition - same physical disk?
I have triple booted Windows XP (195 GB)partition 0? the second partition is Windows 7 (195 GB)And the rest of a 1TB hard drive went to Open Suse 11.3. if it makes any difference I used g parted to create the three partitions and made them all primary. My problem is I want to change the way they all get along. When I boot up, I get the options;
Desktop -- openSUSE 11.3-2.6.34-12
Failsafe -- openSUSE 11.3-2.6.34-12
windows 1
windows 2
which is fine, but clicking on windows 1 takes me to the windows boot loader with the options of windows 7, or previous version of windows. clicking on windows 2 brings up a screen telling me " rootnoverify (hd0,1) chainloader +1 BOOTMGR is missing press ctrl+alt+del to restart" I would like the end result to be windows 1=XP,windows 2=7, then I can rename them accordingly. one more thing, when I installed openSUSE, I let it automatically configure the hard drive and create the necessary partitions(it deleted partition 3 first). i remember it saying somewhere that the boot manager was past the 125 GB limit, and might not boot.
I currently have 2 operating systems on my main hdd: Ubuntu and WinXP My current setup - [storage NTFS partition, solely data][17GB WinXP partition][{extended partion}Ubuntu + swap]: [URL] I have a second SATA hdd that I would like to install Arch Linux on to. It uses GRUB Legacy, and Ubuntu uses GRUB 2. I would like to know how I would go about booting this, and figure out where my current bootloader is installed to. i.e. /dev/sda or /dev/sda5 (the / ubuntu partiton)
View 3 Replies View Relatedinsmod: error inserting 'kernel.ko': -1 Invalid parametersI am getting this error when i am try to insert kernel.ko into kernelMy systemfedora 12 with gcc 4.4.2insmod kernel.koinsmod: error inserting 'kernel.ko': -1 Invalid parametersmy program
__________________kernel.c________________________ ___________
#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO */
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