Ubuntu Installation :: Update From 8.04 To 10.04, Cannot Boot, Wrong Grub Root?

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.


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Ubuntu Installation :: Boot/grub/win7 - Testdisk/update-grub Method, But It Didn't Work?

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:

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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General :: Grub Starts With Wrong Root?

Aug 8, 2010

After deleting a ntfs partition, grub is giving me troubles. My fdisk -l gives:

Device Boot Start End Blocks Id System
/dev/sda1 1 3824 30716248+ 7 HPFS/NTFS
/dev/sda2 3825 121600 946035720 f W95 Ext'd (LBA)
/dev/sda5 3825 4716 7164958+ 7 HPFS/NTFS


I have one harddrive and a DVD drive. In the bios, the harddrive is mentioned first. So (hd0,5) should point to the /dev/sda6.

BUT when I start my computer, it returns to the grub prompt. The command root gives: (hd0,6).
Why? It should be (hd0,5).

At the grub prompt I enter: root (hd0,5) and configfile /grub/grub.conf and the computer boots fine to fedora.

How can I tell grub use the correct partition?

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Fedora Installation :: Dual Boot - Installer From F13 LiveCD Doesn't Detect Other OS - So Grub Conf Is Wrong

Oct 13, 2010

I've just installed Fedora (F13) for the first time, on a new HDD, to give myself a dual-boot system. So currently I have:

So, at the appropriate stage in the install menu, there is an option for where to install GRUB, and a drop-down to choose which drive is the primary BIOS boot drive.

However, in both cases, no other drive except my new sdc is visible. So, I can install GRUB to MBR of sdc, or to first sector of boot partition - but no option to put it to my primary boot drive MBR on sda.

Likewise, in the GRUB configuration page, if I go to Add another OS, the only option it gives me is my new Fedora install. It doesn't list the Vista OS on sda at all.

The result is that I can boot to either OS by changing the boot drive priority in BIOS.

I guess my question is this:
- is this expected behaviour from the installer, meaning that I'll need to configure GRUB manually somehow? (gulp ) or
- did I do something wrong in the install process? or
- is this some weird bug manifesting itself?

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Ubuntu :: Stuck With Wrong GRUB / Mount Of Root Filesystem Failed

May 23, 2010

A friend of mine upgraded his pc to ubuntu 10.04. Sadly enough we ran into issues with his graphics card, which apparently doesnt work well with lucid. We decided to downgrade to 9.10. I did this by installing over the old partition and chose to import the settings from the old account.The problems started when the pc booted for the first time:The list of kernels in grub2 was the one from 10.04.Somehow grub2 from the old installation seems to be still around and messes everything up. Any ideas how I could fix this?

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Ubuntu :: Grub Update Error "update-grub Head: Cannot Open `/boot/grub/video.lst' For Reading: No Such File Or Directory"

Apr 7, 2010

after doing an upgrade to 10.4 and updating grub I get this message. how do I address this


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Ubuntu Installation :: Update And Then Cant Boot To Grub?

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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Ubuntu Installation :: Error During GRUB Boot :: Gave Up Waiting For Root Device

Nov 30, 2010

just installed ubuntu 10.10 on my external usb hdd from my 8gb flash drive doing this on a laptop, my primary hdd (internal) is running windows (230gb of 250gb used) so i got an external hdd (2tb) and I decided to install ubuntu on it


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Ubuntu Installation :: Can't Boot Windows 7 After Grub Update

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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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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Ubuntu Installation :: Grub Update - Can No Longer Boot Vista

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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Ubuntu Installation :: After Update Boot To Grub Command Line

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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Ubuntu Installation :: Error On Update-grub & No Windows Boot?

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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Ubuntu Installation :: GRUB Boot Menu Not Showing After Natty Update?

Apr 28, 2011

When I first boot up. I get the GRUB command line. What happened to the boot menu? And I can boot up into my Windows partition just fine. But when I try the other partitions i get "Unknown file system" or when I try to boot into the other ntfs drive, I get "BOOTMBR missing", but yet it does not mean Windows, because i can boot that just fine. I can't find my Ubuntu partition. How can I get the GRUB boot menu back?

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Debian :: Grub And Boot Console On Wrong Screen?

Nov 16, 2010

I've recently installed a new graphic card after my old one started to go belly-up and it works nicely in X with twinview. The card have one VGA, one DVI and one HDMI. I have the monitor connected to the VGA and my projector connected to the DVI. However, when I boot the monitor (VGA) don't receive a signal. It is dead until X comes up (and when X comes up it does exactly what I want, it uses the VGA monitor as the main screen).

I had this setup on my old card to and it worked fine. Grub and boot console showed on both screens and I never had to tweak anything to make it do this.

how to enable the VGA outlet, either have boot enabled or only the VGA enabled (either way is fine by me but I really want to see Grub and the boot console on startup).

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Ubuntu Installation :: Grub Installed On Wrong HD ?

Aug 27, 2010

I have two HDs and recently reinstalled Ubuntu.

However, I think grub may have installed to my media drive and not my main HD.

Here is the output of fdisk -l:


dev/sda1 is my media drive and I think during setup grub-install may have been automatically run on /dev/sda1. If this is the case,

1) How can I remove grub from sda1 and install it on sdb?
2) Should it be on sdb1 or sdb2?
3) Can I change the naming so my main drive is sda and my media drive is sdb?

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Ubuntu Installation :: GRUB Installed To Wrong Drive?

Jul 6, 2010

I have a system with two hard drives: an old one with XP and Ubuntu on it, and a new one on which I have done a fresh install of XP. The BIOS is set to boot off the new drive. I have now installed Ubuntu Studio 10.04(off an alternate install disc, not a live CD)onto a partition on the new drive. The installation went fine, but it appears to have written the GRUB bootloader to the old disc. The result is that when I boot up, the system boots straight into XP off the new drive, without ever seeing GRUB. I could reset the boot order in the BIOS each time I boot according to which OS I want, but that is cumbersome; also I would like to be able to remove the old drive at some point.

What is the easiest way for me to re-install GRUB to the new disc ?

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Installation :: Grub Points To Wrong Kernel

Mar 5, 2009

It points to the old Fedora kernel, and needs to be directed to the pre-installed kernel. What will the new menu entry be after it loads?

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Ubuntu Installation :: Grub Reinstall Went Wrong After Windows Wiped It Out

Jan 9, 2010

Some days ago I decided to reinstall windows, of course windows wiped Grub of the MBR. No problem. I booted of the live CD (9.10) and tried to reinstall grub, I had Ubuntu 9.10 installed before windows wiped grub. I tried the following tutorial: [URL] My fdisk -l output is the following: root@ubuntu:~# fdisk -l

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000f2962

sda3 is my root partition, sda2 is the partition where all my media files are located. I mounted /dev/sda3 to /media/root and then I tried to reinstall grub with: sudo grub-install --root-directory=/media/root /dev/sda It came out with no errors, and then I restarted my computer. Grub started, but with a command line. It was the 1,97 beta-4 version. Since I'm quite unfamiliar with GRUB (or really technical linux stuff)

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Ubuntu Installation :: Grub Installs On Wrong Disk And Overwrites Win 7 Mbr (more Than Once)

May 20, 2010

I recently bought a new Gateway desktop. I use mostly Ubuntu but like to boot into Windows once in a while. Have used Ubuntu as my main OS for about 3 to 4 years, dual booting. After the Ubuntu 10.04 release, I decided to throw in another hard drive into the new computer and make it dual boot.


1. I did not create the Gateway Recovery Disk in Windows before installing Ubuntu.

2. Installed Ubuntu 10.04 without disconnecting the Windows 7 drive.

3. The Ubuntu install never prompted me asking where to install Grub (apparently there is an advanced menu somewhere in the install process that lets you select), and it was installed to the first drive on the PC by default, which happened to be the Win 7 drive.

This left the Windows 7 unbootable because it did not appear in the Grub menu. I did some searching and managed to install Grub on the second drive (the one with the Ubuntu install) and also managed to add Windows 7 to the Grub menu so I could boot into Windows. This last procedure added the Windows 7 option to the Grub on both drives.

I then managed to fix the Windows 7 mbr using /fixmbr and /fixboot. The problems I still have are as following. I can't create the Windows Gateway Recovery Disk in Windows. Every time I try, I get a message telling me "Hard drive configuration is not set to the factory default. Restore aborted.". I already disconnected the Ubuntu drive but get the same results. I know this one is not a Linux issue, but maybe someone had a similar issue and might be able to help.

The next problem I have is that it looks like after the las Kernel update in Ubuntu, Grub overwrote the Windows 7 mbr again. Is there a setting file somewhere that now tells Ubuntu that Grub is installed in two places and that whenever there is an update it updates both? Can I change this? I really would like to avoid re-installing Ubuntu to fix this.

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Ubuntu Installation :: Grub.cfg Gets Wrong When Installing On Usb Hard Drive?

Jun 6, 2011

I have a HP Compaq 6710b notebook with W7 on it. I want to use Ubuntu for hobby activities, but as this is a company notebook, W7 should remain intact. I decided to install Ubuntu to an external drive.I set BIOS boot order to CD-USB-HDD.I attached a 2.5" 250GB WD Passport usb hard disk and installed Ubuntu to it from the CD.As a result, the clean install doesn't boot, I get a mere grub console (normal, not rescue).

Examining the situation I learned, that during Live CD session the inner hdd is hd0 and usb drive is hd1. Grub.cfg gets compiled to use /dev/sdb.When booting from usb drive, BIOS makes it to be hd0 and inner hdd becomes hd1 so grub tries to load kernel from W7 partition (and can't find it, I wonder why? )How to fix problem? Although grub.cfg is supposed not to be edited, may I change every sdb to sda in it?

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Ubuntu Installation :: Update Manager Reports Wrong Size?

Oct 21, 2010

It just happened for the second time some minutes ago (first time was yesterday): the update-manager window reported that 7MB needed to be download, but after clicking Install Updates 17.3MB was downloaded...It's a know issue in 10.10?

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Debian :: Jessie 8 Update - Boot Grub Shows Now 2 Kernel Versions To Boot From

May 2, 2015

After some updates Jessie 8 my boot grub shows now 2 kernel versions to boot from.


- How do I know which one is the newest and if happy with it, how to remove the older one?

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Fedora :: Boot To Grub And Recovery Root Password

Jul 29, 2009

I am new to Fedora. I know my top probably already been posted somewhere but I just could not find it. I just installed Fedora 11. But my root password does not work (I guess was my fault to type wrong in the first place or some type of short term memory lost). I looked at the root password recovery procedure which involves select single user at GRUB page when booting. But for some reasons, Fedora 11 does not boot into GRUB. I tried Alt+CTRL+F1, F1 or Shift, none of those gives me Grub screen.

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Ubuntu Installation :: Wrong Drive Mounted As /boot During 10.10 Install?

Mar 19, 2011

My old server machine running Ubuntu 6 experienced hardware failure, so I built a new machine with spare parts and decided to install 10.10. I used the 2 HDDs from the old machine and decided to use existing partitions for the 10.10 installation. I specified the existing partitions on a 250 GB PATA drive for root, /boot, /home, and swap. For some reason when I booted up 10.10 for the first time, the other HDD (750 GB SATA) was mounted as /boot. I never specified the second drive to be used for anything during the installation, so I have no idea why this happened.and how can I change the mount point for /boot? I would like the highlighted partition in the attached screenshot to be /boot. I really hope nothing on the 750 GB drive was overwritten in this whole process, because it contains all of my photo and video backup.

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Ubuntu :: Update GRUB Or Pc Wont Boot?

Nov 9, 2010

I have Ubuntu 10.10 installed on my machine and recently I have been having the following problem:

Whenever I shut down my PC and boot it up again, I get to the Initial menu where it asks if you want to run Ubuntu, Ubuntu safe mode etc... I hit enter and then there's just a black screen.

I then have to restart, run Ubuntu in safe mode and update GRUB. After this It boots up fine.

So, is this a software issue? Is it an issue with my HDD or is it something even worse?

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Slackware :: Won't Boot After Update - VFS Cannot Open Root Device

Oct 21, 2010

I have been trialling Slack 13.1 on a spare 32b system for a couple of weeks, and today I took the plunge and put it on my main machine. I completely re-partitioned the drive (using the Slack disk) and installed Windows7 on one partition and Slack 13.1 on another. The install worked fine and I tested that it boots from LILO into both Windows and Slack perfectly. I then ran:

slackpkg update
slackpkg install-new
slackpkg upgrade-all

And since then it fails to boot with the following:

VFS: Cannot open root device "802" or unknown block(8,2)
Please append a correct "root=" boot option; here are the available partitions:
0840 488386584 sde driver: sd
0841 97659103 sde1
0842 19535040 sde2
0843 498015 sde3


I have seen many, many similar problems when searching Google but they all seem to be caused by different things.

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Fedora Installation :: F11 - Netmask For Eth0 Wrong At Boot

Sep 27, 2009

I have been working on a network problem and have found what the actual problem is. For some reason on boot the netmask for my eth0 is set to be In the network GUI application it is set correctly to

I looked in the following files and it is set there correctly too.

If I check the box to "controlled by network-manager" the eth0 interface is started at boot but with a netmask of If I uncheck this box then the interface does not come up at boot and I have to go to the GIU application to start it. It still comes up with the netmask of

I have to use ifconfig to set it to the right netmask and then everything works until I reboot.
"ifconfig eth0 netmask"
How do I get this to work properly? I need it to come up with the correct netmask.

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Ubuntu :: Update Screwed Up Grub Dual Boot?

Feb 3, 2010

On my hard disk I have ubuntu 9.10 (/dev/sda6) and Slackware 13 (/dev/hda1). Since Ubunutu was installed second, it replaced Slackware's lilo with grub. Anyway I modified grub and got Slackware 13 booting also, I has been this way for a couple of months. Tonight slackware would not boot, it kernel panic'ed.Complained about no device /dev/sda1 and listed possible devices, /dev/hda1 (What it is supposed to be) being one of them. What the heck, what changed???

A quick check of /boot/grub.cfg first showed that the las cahnged date was 2010-1-30. What? I have not touched grub.cfg since the Ubuntu 9.10 install. But, I remember that about that date I did a system update. there were four Slackware menuentries, and I remember only one. Strange. Anyway I changed Slackware's grub menu entry to root=/dev/hda1 and rebooted. Now it complained about no known file system, Slackware 13 is ext4. Here is the Slackware menuentry:


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OpenSUSE Install :: Using GRUB And The Boot Loader Location Has Both "Boot From MBR" And "Boot From Root Partition"?

May 19, 2011

I just did a fresh install of 11.4 and I LOVE IT!!! One of the little issues I am having though, is that there is no login screen. No matter what settings I change it still auto-logs me in.

I am using GRUB and the Boot Loader Location has both "Boot from MBR" and "Boot from Root Partition". Is this right? I would think that I should just boot from the MBR.

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