Ubuntu :: Grub Finds No Kernels / Only Memtest
Jul 31, 2011
I ran grub-customiser to set default kernel, and saw the GFX mode setting, thinking "Hey, my monitor is native at 1440x900! I'll use that!" ...Didn't think about how the GFX card isn't initialized at that point, so my res is limited to 640x480... So the first problem was a system hang at the grub menu, with "Input Not Supported" displayed on the monitor.I changed the GFX mode back, and ran update-grub, and with a grin on my face, I rebooted. The grin went away fast, when I saw that none of the kernels showed in the grub menu, and I have only the two memtest entries. It appears that, while all the files are still intact, grub is not seeing the kernels. I had an idle partition of about 13 GB on hand, so after trying all sorts of things, I did a clean install on the little 13 GB partition. Still no dice, after doing an apt-get purge grub etc etc etc on my main Ubuntu partition, to make sure that the new grub was running. I still have only memtest, even though I can open the /boot directory and see the kernel files. I tried going into the grub command line and starting manually, but tab-complete does not suggest any of the kernel files, and tells me that the files do not exist, if I type in their full names.
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Apr 1, 2011
Using Ubuntu 10.10 and Win XP - dual drives booted by GNU Grub version 1.98 +20100804-5ubuntu 3 Every now and then, a "Memory Test (memtest 86+)" and a "Memory Test (memtest86+, serial console 115200)" line are added to my Grub startup screen. This causes Grub to start-up a different line than I have set to default. (Ubuntu vs. Windows, etc.)
1. How do I edit the start-up Grub to remove the "memtest" lines?
2. How do I prevent this from occurring?
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Apr 29, 2011
The upgrade finished, did a y to reboot and it boots to memtest, no sign of the grub screen at all.
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Feb 16, 2011
after new entry regarding memtest tool, grub doesn't see it.
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Feb 6, 2010
I'm stuck in Memtest86, everytime i boot it gives me an option to go into BIOS, and then it says "Loading GRUB." After that it automaticly goes into memtest, and I've let it finish numerous times without giving me errors. I've installed Linux Mint 8 via Unetbootin, I have a nearly fresh install of windows 7 on my laptop.
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Jan 21, 2010
In general I love Ubuntu Karmic, and think it's the most polished Gnome distro out there, but since installing it on my laptop alongside Fedora I haven't been able to boot into the latter.
I know that I could fix it by adding an entry into the 40_custom file, but wonder if there's a simpler fix.
The command
Quote:
sudo update-grub
actually finds and lists the Fedora Constantine kernel, but it still doesn't appear in the bootloader menu. Before I delve around and break something, does this mean that there's a line commented out in one of the config files?
I'm not going to slag off Grub 2 because I can see that it has clear benefits, especially for power users, and I don't mind change if it brings clear benefits. So long, /boot/grub/menu.lst.
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Oct 12, 2010
I've been using Ubuntu for more than a year (just basic simple stuff like surfing the net or the occasional document) and in the last months I've been running into the following problem.I've been updating regularly to the latest Kernels the last one should be 2.6.32-25. However at start up Grub loads only 2.6.31-19 and below and there's no mentioning of 2.6.32 in grub.cfg while it is present in menu.lst. I tried to update grub with no success.
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Apr 16, 2011
I have GRUB to allow me to boot windows and Ubuntu, i recently noticed that my list of kernels is getting clogged up with all the updates. So i went online to try and find out how to get rid of the unwanted partitions and also how to add new ones - i am going to attempt to hackintosh, and will need to know how to add kernels. What i found out was; the boot menu in GRUB had a file that is supposed to be called 'menu.lst' (Lst not ist), and that all i needed to do was edit this, that it wouldn't delete the kernels, but that i don't need to, i only need to add and remove links to kernels on the GRUB menu. The problem is that after looking, i don't have that menu.lst file, i have a file containing the image files for 'memtest', but not for my GRUB. I am using 10.04, i don't know what version of GRUB im using but i'm using whichever one comes with 10.04. Could someone please point me in the direction of the files i need to edit or what i need to do to add and remove kernels?
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Jan 2, 2010
I recently installed ubuntu 9.10 and a day later updated with all the suggested security and recommended updates. Now I notice that in my Grub there are two different kernel versions listed. Are they both necessary? Can I / should I get rid of the older one, and if so, how?
I ask because after all these updates I notice my computer runs much slower, so I don't want it overloaded with unnecessary software.
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Jan 14, 2010
So today 2.6.31.17 came. to the b1tch of a cat sleeping on the keyboard, I was forced to a restart before I wanted.
Anyway why does each have have entries for :
linux-headers-2.6.31.17
linux-headers-2.6.31.17-generic
[code]...
How do I know which one I should use from the choice of 3 for the current kernelAnd if I understand which one to use, can I delete the others from the same imageAlso, in start-up manager I have choice of 4 from the drop down list?
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Mar 17, 2010
After I messed up badly with my netbook I have to reinstalll the OS, it is a government property netbook that came up with Edubuntu 7.04 insalled on it. I shouldn't mess with the filesystem but I did and now I have to install Edubuntu from the beginning, but I must be sure that everything will just like I have done no change, so I am afraid that I can make some mistakes at this pointThe first thing that I want to know is: Why there are multiple kernels listed at the GRUB (v 1.5)...this is the full list:
Ubuntu, kernel 2.6.28.9 Default
Ubuntu, kernel 2.6.28.9 Default (recovery mode)
Ubuntu, kernel 2.6.28.9
[code]....
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Jan 30, 2011
Ubuntu disappeared from grub menu after I deleted the old kernels.
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Mar 18, 2010
I am not able to log to my system as i am getting a strange message at GRUB screen even different kernels are not getting loaded. The entire thing i get is as follows: GNU GRUB version 1.97~beta4 [Minimal BASH-like line editing is supported.For the first word,TAB lists possible command completions.Anywhere else TAB lists possible device/file completions.
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Aug 26, 2010
I have Ubuntu 8.04 (32-bits) installed on /dev/sda and Ubuntu 10.04 (64-bits) installed on /dev/sdc (this is an update from 8.04 64-bits originally installed on /dev/sdc). There is a grub on each of these two disks. Both are the old grub (prior to version 2). Here is the top kernel listing from /dev/sda:
titleUbuntu 10.04 LTS, kernel 2.6.32-24-generic (grub sur unite1)
root(hd2,0)
kernel/boot/vmlinuz-2.6.32-24-generic root=UUID=761c3d13-cc55-4117-934f-693766e122b6 ro quiet splash locale=fr_FR
initrd/boot/initrd.img-2.6.32-24-generic
quiet
[Code]...
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Nov 25, 2010
I followed the Grub 2 Basics steps to remove Grub 2 kernel listings.
However I'm stuck with 3 older versions that was completely_removed from Synaptic (kernel/headers/generic), but remain in grub.cfg.
Quote:
Here is my current grub.cfg:
(How do I remove *.14 *.21 *.22 from my menu entries Ubuntu-tweak is not an option for me. I like it old-school or with the tools at hand.)
Code:
I considered changing permissions for grub.cfg, but update-grub and new kernels will revert my changes.
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May 3, 2011
I have this strange problem on ubuntu 10.04 64 bit, that when running update-grub, it will only put the oldest kernel into the grub menu, despite the fact that I have recent kernels around as well.
in particular:
Code:
# update-grub
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
[code]...
I'd like to see the most recent kernels in the grub menu, with the most recent being on top.
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Feb 17, 2010
I'm sure there is a thread on this somewhere, but after looking though the first 100+ search results, I can't seem to find it.
After a kernel update today, I noticed that new kernels are not being added to my grub menu.lst (so consequently, I was running an older kernel).
Any obvious reason why this would happen (kernels being installed normally, with yum update)? I thought the whole process was supposed to be automagic.
Would it have anything to do with the fact that I just kept my F11 menu.lst, and added a F12 kernel to it when I installed F12 (to a separate partition), then eventually (today, finally) removed the f11 kernels from it?
Here's my menu.lst, in case it's useful:
Code:
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Aug 1, 2010
I have a grub menu with a ton of old kernel entries that I want to delete. I've scoured this forum, and haven't found anything that works. I've tried:
Code:"the easiest way to get rid of old kernels from grub is to uninstall the package, the post-install scripts will update grub
for example my current kernel is:
uname -a
Linux hemma 2.6.31-16-generic #53-Ubuntu SMP Tue Dec 8 04:02:15 UTC 2009 x86_64 GNU/Linux
then remove older kernels found in /boot like this:
sudo aptitude remove linux-image-2.6.31-15-generic" When I tried that, the output showed the package being removed, but nothing was removed from the grub menu. I tried running the kernel I supposedly removed, and it wouldn't start, which is promising, but how do I get it out of the grub menu? I've also tried using Synaptic, but that didn't work either.
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Feb 1, 2011
Downloaded ok and the terminal did it's unpacking and updating thing, then it said I needed to reboot.So I did, and now I can only boot into memtest.I've had this before and the solution was to hold shift down at boot to force grub to appear, then pick a kernel and set it as default in startupmanager once ubuntu had loaded.
But no dice this time, I've tried holding the shift key down (using USB and ps2 keyboards) but I cant make grub appear - straight to memtest every time.
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Jan 9, 2010
I did updates that came up automatically, and now when it rebooted, I can't go in to anything except memtest. I held shift to see the menu and it still only showed those. I can't loose my data so reinstalling isn't an option for me. Right now I'm using the CD to boot to this. I can see my data on my HDD and its there, but I don't know what to do in order to make it boot to the OS partition (Just switched from Windows 3 days ago).
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Nov 8, 2010
Shut down as normal last night, no major changed yet after booting this morning my computer went straight into memtest86+. After finishing, and i rebooted, it did it again. So, i held shift to get into the grub.
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Jan 9, 2010
according to this [URL] I issue this command sudo chmod -x 20_memtest86+ when I do that I get this error chmod: cannot access `20_memtest86+': No such file or directory I know it is something simple but, I don't get it.
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Mar 23, 2011
I am running memtest due to memory issues, I am wondering if their is a log file that can be saved to the hhd with the memtest results, I am running memtest from the grub menu.I am running ubuntu 10.10
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Jun 29, 2011
I have a machine that was running 10.10 and I updated it to 11.04 and now when I reboot I am taken directly into memtest. Any attempt to hit esc during boot is ignored and no matter what I just go into memtest. Here is /etc/default/grub from my boot drive
Code:
ubuntu@ubuntu:/media/c8e24038-87b7-4a9a-87e0-11de250e3f4b$ cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
[code]....
I am booting now from a 10.10 USB stick and I can access my boot drive so if I need to change stuff I can.
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Apr 29, 2011
I am having problems installing linux on an old PC with the hard drive shredded, old CD drive, old 1 GB RAM card. I want to make sure the problem is not that the memory is partially bad.I recall that there should be some way to get the BIOS to test the memory overnight, but couldn't find this mentioned in the books I checked or in my notes. I believe that the motherboard is made by ASUS, if that helps. When I power on and hit the delete key, I do get some BIOS options, but memtest is not mentioned.
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Jan 30, 2010
I just finished an install with 4 OS's. DOS, XP, WIN7, and UBUNTU. They work fine no with problems. However, the menu entry to run memtest does not work, However on my other system it works. The failing system is an i7 and the working one is a Core Duo. Both have a lot of ram. The Ubuntu os was copied with GPARTED. So it is identical.The menu.lst was a copy/paste job and then the HDxx's modified as needed. Please take a look and tell me where I went wrong.menulst.txt
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Jun 20, 2010
Bought computer 11 months ago, immediately there were problems. What would happen is, when I logged in after a long period of shut down, the system would BSOD. Then I would restart and everything would be fine, until the next time I shut down for a long time (8ish hours) and got back on. I sent the laptop in (a couple times) and they eventually replaced the RAM and the BSODs went away. This is all on Windows 7 (well started on Vista, switched to Windows 7).
I recently set up a dual boot with Windows 7 and Ubuntu 10.04. I'm experiencing crashes on Ubuntu (the whole system just freezes, can't operate mouse, keyboard, or anything) and the behavior is similar. When I log on after a long period of shut down, the system will crash, but if I restart (actually I have to wait 10 minutes before I restart, if I restart immediately it will crash again) then it is fine, until the next period of long shutdown.
So I'm thinking it's bad RAM, so I downloaded Memtest and am testing each of my sticks (they are each 2GB) individually in the same connector thing (don't know what it is called, whatever the sticks attach to). The test for the first one passed with flying colors. However, the second one is having problems. On test #2, the memtest repeats itself, continuously looping through 0-32767 errors on the right side.
My laptop is an Asus G50VT
The 2 most interesting lines...
Highest Error Address: 000fffffffc - 4095.9 MB // does this make sense? 4095.9 MB on a 2GB stick?
Test 2: 32767 // the 32767 loops back around to 0 and repeats
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Sep 22, 2010
got a whole lot of video files spread among 100's of folders, wondering if Linux has a program that can scan the modification and view dates of them all, and just display what's been accessed most recently.
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May 5, 2011
I've got problem with Avahi on my laptop. It can see the other machines and services on the LAN but not it's own local services and I have no idea why. The laptop (hostname: forseti) sports Ubuntu 10.10, installed aavahi-daemon, avahi-dnsconfd and libapache2-mod-dnssd. Firewall is disabled. Other hosts on the LAN are: magni (openSuSE 11.4 with lots of services published and visible from forseti) and freya (Ubuntu 10.10 with gnome-user-share up & running). Forseti can see the other hosts and their services but not itself. The other hosts can't see forseti. Checked both with nautilus and CLI's avahi-browse.
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May 25, 2010
It seems that the canonical instructions for making a bootable USB flash drive that runs memtest are at:
[URL]
However, after following them to a T, I boot up the new machine and get:
"could not find kernel image: linux"
Do I need to set up a lilo.conf first?
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