Ubuntu Installation :: After Update - Grub Won't Boot Says Kernel Missing
Jan 9, 2010
I used the update manager to update the kernel and whatever the other recommended updates were yesterday. I shut the computer down overnight and now when i try to boot into Ubuntu 9.10 i get a basic grub shell and when i try commands like "boot" it tells me there is no kernel loaded. I installed Ubuntu with Wubi so it is a dual boot system.
I've tried to access the Linux volume with a live OpenSuse 11 CD but there is no device to mount. It sees the entire hard-drive as if it hasn't been partitioned. I don't necessarily need to fix the installation. I just need to get my files back.
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Dec 23, 2010
after yesterday's update to kernel 2.6.35.10-72 my grub.conf didn't get updated and ll /boot shows that neither vmlinuz or initramfs exist for that kernel. uname -r though tells me I'm running 2.6.35.10-72.
How can I do that? and on another more reallystic matter how can I generate the missing files so I can manually update grub.conf?
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May 2, 2015
After some updates Jessie 8 my boot grub shows now 2 kernel versions to boot from.
3.16.0-4-amd64
3.16-3-amd64
- How do I know which one is the newest and if happy with it, how to remove the older one?
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Feb 20, 2010
I'm running Hardy 8.04 LTS 64bit. The Update Manager updated the kernel and then asked if I wanted to use the local version of the grub menu. The boot menu was getting so long I edited it to shorten it. Other options were also offered, like the builder's version, but I chose the local version and since then the new kernel doesn't show up in the boot menu. Sudo update-grub doesn't restore it to the menu.
How do I undo the local version of the boot menu so I can see the newest kernel?
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Mar 4, 2010
The update package popped up with some security updates. I downloaded all of them and then hit the restart button. Now all I see after the winboot load is the grub 'dos' screen. I can get to grub rescue but thats it. I was wondering if there is a way to download the missing files from somewhere and place them in the grub folder as I am dual booting with XP.
I have installed Ubuntu onto a seperate partition as well.
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May 15, 2011
After upgrading Maverick (perfect!) to Natty, I was unable to boot into anything. (kernel 2.6.38). However, through much PITA, I was able to boot into an older kernel. (2.6.35). I completely removed 2.6.38, rebooted, reinstalled it and ran update-grub. However, 2.6.38 is no longer available no matter how many times I run update-grub, and the only option left is 2.6.35. In my humble opinion, the Natty upgrade experience is rubbish. (blank screen, total PC hangs, boots into a blank screen with only a blinking cursor, NVIDIA official driver not working, bootable only into older kernels etc.)
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Mar 4, 2011
I have 2 hard disks. sda,sdb
In sda, I have 4 partitions, and I have windows 7 in one of the extended partitions [not in the primary partition].
In sdb, I have 3 partitions. 2 for storage, and 1 10GB drive for Ubuntu. Again, Ubuntu is not of a primary partition.
I had ubuntu 10.04 running on that for a long time. However, I wanted to reinstall ubuntu and use 10.10.This is what I did EXACTLY:Booted from Ubuntu install CD
Chose advanced istall
Selected sdb3 for Ubuntu
I installed GRUB2 on the SAME partition as Ubuntu aka sdb3 Installed then rebooted
I can boot into Ubuntu fine, but whenever I select Windows 7 bootloader from the GRUB menu, the screen goes black, and my PC reboots.
Boot Info:
Code:
Boot Info Script 0.55 dated February 15th, 2010 [code]....
ls: reading directory sda6/: Input/output error
I have tried the testdisk/update-grub method, but it didn't work.
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Sep 6, 2010
I did the kernel update via Update Manager today. Unfortunately , after this , disaster happened whereby sh.grub> prompt appeared on screen.
I got no idea how to rescue or repair the grub. I installed Ubuntu 9.10 in my E: under Windows 7 partition and labeled as "ubuntu". It has dual boot capability.
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Apr 10, 2010
I had a dual boot system(WinXP and Ubuntu). But something happened and I was not able to boot into my Ubuntu partition. It gave GRUB missing error. I tried reformatting the dedicated 40 GB ubuntu partition to NTFS and again try to reinstall ubuntu. But now, when I install ubuntu through boot time install, it shows that my whole hard disk is empty( but I have windows XP on whole hdd at the moment) and do not give any other option but to use whole hdd.
Alternatively when I try to install it inside windows, then after rebooting it shows, no root file system defined error and neither gives any option to do so also ( this method worked earlier o my PC). At the moment, It still shows ubuntu and windowsXP at OS choice menu at boot time but when booting in ubuntu, it shows GRUB missing. (I don't have any ubuntu installation on my hard disk at the moment).
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Apr 7, 2010
after doing an upgrade to 10.4 and updating grub I get this message. how do I address this
[Code]...
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Dec 20, 2010
i have a Winxp and Ubuntu 10.10 system(wubi-install, update from 10.04 to 10.10).I have fixed the update problem 10.04 to 10.10 with the modified wubildr.Today there was a kernel update from 2.6.32 to 2.6.35 (???) and after the restart i can boot only xp.If i choose Ubuntu, there is a black screen and the computer restart. the ubuntudisksootgrub folder is empty!?!Here is my log:
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
[code].....
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Mar 24, 2011
I have a new acer machine which runs fine on 10.10 mythbuntu desktop livecd. Install seemed fine.
Then I ran an update and on reboot I get a kernel panic error. Research on this reveals it as a very deep subject which can consume many hours, so I opted to reinstall.
This time with ubuntu 10.10. I've tried different CDs, liveusb. Same errors.
So, the question is this - where do I concentrate my efforts - somewhere ubuntu doesn't like this machine, or grub. Does a reinstall overwrite the grub install too? Or do I have a bogus grub install I need to purge before I will get anywhere.
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Oct 29, 2010
I just netinstalled Squeeze to a netbook with Windows7. The installation went well without any problem. Linux is also working OK. When I boot now, grub does not show Windows7. I took default settings during installation. I mean I did not do anything special. What should i do to fix it? Should I run osprober and grub-update?
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Mar 12, 2010
I had ubu 904 and vista installed on an 80gb drive, i had a spare 80gb drive also. I setup a raid0 config in my bios, then installed ubu9.10 onto it. All was fine until the very end, and then it said grub failed to install.
So i rebooted, and im left with a blinking cursor. How do i install grub? Ive installed ubu a few times now and never had an issue so now im lost.
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Dec 22, 2010
I am a brand new Ubuntu user that just tried to install on an old PC using the 10.10 desktop edition.During installation, I hit an error that the bootloader could not install, and after reading about it on the forums, opted to attempt to install it manually after. I have followed the tutorial located here,[URL].. on reinstalling GRUB2 from the liveCD, which I assume means to boot with the installation CD and select try Ubuntu (given the only other option is install, which I have tried twice) everything up to step 5 in that tutorial seems to run successfully, and I am given a message it is installed, but then when I reboot the system it does not open the GRUB2 menu, rather the CLI interface, which suggests there is no grub.cfg
So I am unable to refresh at the GRUB menu because that command is not recognized by the CLI (and it may not help if I am missing files, so I might have screwed up reinstalling them in step 5, or maybe the "Try Ubuntu" terminal doesn't alter the computer like I thought?)
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Apr 2, 2011
I couldn't get 10.10 to boot (live or after install). I was able to install and boot 9.10 normally. Then I ran upgrade to 10.10 and I started getting the same problem trying to boot as with 10.10 disk. I found I could boot with 2.6.32 left from 9.10 but it will not boot 9.6.35 kernels. On a normal restart when automatically trying to boot the latest 9.6.35, I get this message before switching to an unresponsive black screen with no further hard drive activity:
GRUB loading
syntax error
Incorrect command
syntax error
error: file not found
[Linux-bzimage, setup=0x3400, size=0x420c50]
[Code]...
I have been searching for a solution and so far have not found anything that worked. I'm a pretty basic user so I'm not sure what is going on.
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Aug 20, 2010
I am dual booting Windows Vista and Ubuntu 10.04 with WUBI. (Windows works fine). When I updated Ubuntu from the update manager, it just gives me this error code from a JPG attachment I just added with this post. It keeps on saying that every time ubuntu boots up.Is there a Fix? I cant boot up to ubuntu at all...
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Feb 8, 2010
Update manager reported some updates including kernel update to version 2.6.31-19.
after update system won't boot. it crashes into bash shell. I've manually loaded kernel version 16 with following command code...
same thing happened when version 17 came up. I definitely NEVER again going to update kernel. What do I need to do now? should I uninstall latest kernel...if that is possible?
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Oct 29, 2010
After getting everything running nicely on 10.10 (after dozens of installs - long story, partially raid problem, partially noob, partially partitioning and Windows), I'm stuck with an unbootable 10.10.I selected all the "important security updates" when the update manager told me I needed to update everything. Upon rebooting, and picking ubuntu in grub, I get:
Error: unknown command 'record fail'Error: cannot read the Linux header Error: you need to load the kernel first Not exactly sure why at this point. Can anyone point me in the right direction? I can probably get in either through a 10.04 version that I have on another HDD, or through the livecd.
Note: if it's important, I did not elect to install the ATI proprietary drivers, and this is also the first update that I've done after installing medibuntu - a few boot cycles in between, so I don't think it's related.
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Mar 25, 2011
After a kernel update ubuntu would not boot. So found this procedure using the live update cd. Update grub.cfg & delete everything down to but not including the first line that starts with 'menuentry' . Then boot works ok. A couple of weeks ago it started on my notebook. Is anyone @ hq listening & able to fix this problem permanently?
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Feb 10, 2010
I seem to have determined a few other things about my "only gets as far as a GRUB command line" problem:To recap, sda3 (GRUB hd0,2) is the main Linux partition; sda9 (GRUB hd0,8) is the boot partition.GRUB is 0.92.Installation was from an 8.04LTS live CD (at least, that's what the envelope says it is)/"/boot/grub" (i.e., "/grub" on sd9/hd0,8) contains a "menu.lst" file. I modified it (had to do a "sudo gedit" from a command line!) to (1) comment out the line that hides the boot menu, (2) change the timeout from 3 seconds to 90, and (3) add a menu line based on my succesful manual IPL of DOS.
It still boots to a GRUB command line. If I do a "configfile /grub/menu.lst," a boot menu comes up. DOS will successfully IPL, but Linux still gets a "no setup signature found," (ditto for "recovery mode"), which suggests either a bad kernel, or a kernel that's too big for the GRUB to handle.Why would it be finding its way to grub, but not finding the boot menu file?Why would the live CD come up just fine, yet the GRUB and kernel it installs fail?
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Mar 9, 2010
I'm currently running Karmic 9.10 in dual boot with Windows 2000. My computer has automatically updated and installed kernels 2.6.31-17, -19 and -20 (They show up in Synaptic as installed).
However, the newest kernel choice in my GRUB menu is 2.6.31-16-generic (followed by -15 and -14). These all start without any errors.
Question: Why haven't the newer updates shown up in GRUB for booting purposes?
Could it be a question that I didn't answer correctly some time back about accepting or not accepting an update or change in GRUB?
How can this be changed? The new kernels do not show up in Start-Up Manager either.
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Jul 21, 2010
I have been phenomenally unlucky with Ubuntu as seen my my post history and decided to dual boot.
I set it all up with a clean install, when I tried to load Windows from Grub the computer restarted. After much headache I managed to set it up correctly (when it wouldn't load from Grub I booted from the Windows CD and clicked on "Repair computer" and it finally worked).
Now I am having the same problem as before--I think my installed all the updates from Update Manager and it included a grub one. Now I can't load Windows from the grub menu: It goes to the Starting Windows screen and then reboots my computer. If I do it again it gives me an error message and an option to perform "Startup repair". When I try to do Startup Repair, the computer reboots after a few loading screens.
So I tried what worked before and put in my Windows 7 CD, and clicked on Repair Computer. BUT NOW it gives me an error message somewhere along the lines of system restore is not compatible with my installation of Windows, and to insert a compatible recovery CD. This is the ONLY Windows CD I have (legitimate copy).
Over the course of this migration experiment I have installed and reinstalled both operating systems 7-10 times total. I'd rather not do it again. My poor laptop is probably wondering what the heck.
I can't stick with Ubuntu alone because my wireless doesn't work with it, my grad school files are not completely compatible with open source software, and I can't play the games I'd like to. So I must have the option to at least dual boot into Windows.
When selecting Windows it restarts the computer entirely to the Compaq screen, not just to the Grub menu, if that matters.
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Dec 1, 2010
Ran the updater, went to boot to Win7 to use Photoshop and realized that the grub menu was gone. Ubuntu boots by default now. I tried running "sudo update-grub" at a virtual terminal and while it listed the various linux kernels ok, it then got caught in a loop spitting out some crazy looking errors. I rebooted and Ubuntu came up fine. I tried running "sudo update-grub" again from the gnome terminal and it hangs the whole computer for a few minutes and finally gives me this:
[Code]...
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Mar 14, 2010
I'm a very new Linux user, so speak slowly and don't use big words. I installed Karmic from the Live CD. It is the only OS in use on this system. I then upgraded to Ubuntu Studio using the instructions found on the wiki.
On bootup, I get a brief message stating "GRUB loading" and then the system automatically boots to the generic kernel. No GRUB menu is ever displayed. I would like the option to boot to the real-time kernel, but I have no idea how to edit the appropriate files. I've done a fair amount of reading on the subject, but I find very little information relating directly to the real-time kernel, and so I still feel like I'm too green to do it without messing something up.
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Feb 27, 2010
I recently installed Ubuntu (Karmic Koala) on a Dell Inspiron 1525 which already had Vista installed on it. The installation went just fine and I could boot into either Ubuntu or Vista using the Grub bootloader options. After updating grub through the update manager however, I can no longer boot into Vista and get an error message that says:
"Windows cannot start. A recent upgrade or hardware change may have caused this".
And below that:
File: \boot\bcd
Status: 0xc000000e
info: An error occurred while attempting to read the boot configuration data"
When I run sudo fdisk -l, I get the following:
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000080
Device Boot Start End Blocks Id System
/dev/sda1 1 6 48163+ de Dell Utility
/dev/sda2 * 7 13619 109345113+ 7 HPFS/NTFS
Partition 2 does not end on cylinder boundary.
/dev/sda3 13619 15936 18605117+ 7 HPFS/NTFS
/dev/sda4 15937 19457 28282432+ f W95 Ext'd (LBA)
/dev/sda5 19066 19457 3148708+ dd Unknown
/dev/sda6 15937 18930 24049242 83 Linux
/dev/sda7 18931 19065 1084356 82 Linux swap / Solaris
Partition table entries are not in disk order. I have the Vista recovery disk but was wondering whether using it to repair the Vista bootloader might mess up Grub.
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Sep 29, 2010
I recently updated, and now when I boot it only goes as far as grub command line. There is no grub menu. The computer is a Dell Inspiron 8600 laptop with only Ubuntu installed -- no dual boot, no weird partition schemes. Originally installed Ubuntu 09.04 on this computer, upgraded a couple times and it currently has (had) 10.04.1 LTS running. The update should have upgraded from kernel 2.6.32-23 to 2.6.32-24. I can boot with a live CD and mount the hard drive. The drive seems fine, so it appears to be simply a grub config issue. I have to boot with live cd to get online to check for potential solutions. So I'm taking some notes on how to use grub.
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Oct 23, 2010
With a bit of help from this forum I managed to install 10.04. The solution was to add i915.modeset=1 to the options when booting up from CD.Now I need to do the same in order to boot up from HD. I've opened /etc/default/grub and changed the relevant line to include the above option. But I need to run "update-grub" and it comes back with an error to the effect that it 'can't find a device for / (is /dev mounted?)Also, the boot menu only has ubuntu - no sign of windows in my intended dual-boot. What can I do?
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Jun 6, 2011
I just updated my server from Ubuntu 8.04 to 10.04 and now it cannot go past grub, at boot time, it would "give up waiting for root device", asking me to check whether I gave the right "root=..." or if I should increase the "rootdelay=..." in the command line argument and end up with the initramfs.
The machine is a Dell Poweredge 2900 with a HW RAID controller (I hope that should not matter, but just in case...). I tried to follow the instructions there to make sure grub is setup correctly, but without any luck.
Below is the output from the bootinfoscript (while running on the LiveCD). Anybody has any idea what can be the problem or what I could do to debug this ? I am running out of ideas.
[Code]...
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Aug 23, 2009
I have recently updated my Fedora 11 installation which replaced my older 167 kernel with the newer 217 kernel. However, the 217 kernel will not boot completely. It will show the splash loading screen, and then will switch to a rapidly blinking cursor. This cursor blinks for about 5 seconds and then disappears. I can access terminals using ALT+F2, etc. I can log in to these terminals, but init commands do not complete (something about a binary handler). I'm not sure if something is conflicting with an update to X or what is wrong. The most recent kernel that I managed to get to work was Kernel 167, however I cannot find this kernel for download.
Sys info:
AMD Athlon 64 X2 4800+
3GB RAM
nVidia GeForce 8600GT with proprietary drivers
320GB Hard Disk with windows and linux partitions
Fedora 11 32-bit i586
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