Ubuntu Installation :: Grub2 Does Not Find Filesystem?
Jan 11, 2010
Here is my problem. Grub2 outputs error: unknown filesystem. Then when i use "ls" command it outputs this:
(hd0), (hd0,4), (hd0,2), (hd1) and when i "ls (hd0,4)/ or any of them it says: error: no such disk
So, heres my story. I dual boot vista and ubuntu from my main 320GB hdd. Today i tried to fresh install 9.10 on a different external hdd. The 500GB hard drive already had two partitions, a 30GB Fat32 and the rest NTFS. both of these partitions had about 17GB used on them. I installed off a cd and i shrunk the NTFS to allow for more partitions. I made a 4gb swap as logical at the end then a primary ext4 / partition in front of it. The drives are Fat32 sdg0, ntfs sdg1, then an sdg3 (which im confused about and says is extension), and sdg4 (with linux) and sdg5 (swap). When finished with the partitions it asked me to select where to mount the ntfs and i said /windows. When i tried to boot up it did not recognize my external apparently because it was plugged in via firewire. I switched to usb and it booted but then i got the error message in grub. Also, when i switched from firewire to usb the drive changed from sdb to sdg. How do i fix this problem? Will reinstalling ubuntu fix this? Is there an easier way? I tried reinstalling grub but it did not work.
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Oct 13, 2010
After attempting to install Ubuntu 10.10, the boot drops into grub rescue mode Under that, I can see 3 drives, hd0, hd1 and hd2. Apparently grub2 switched the order, as the CD installer had the drives as
/sda partition /home
/sdb partition /boot, swap, /(root), /spare (sdb1,sdb2,sdb3, & sdb4 in that order)
/sdc partition /spare
but grubs lists (hd0) (hd0,1) (hd1)(hd1,1) (hd2)(hd2,3)(hd2,2)(hd2,1)
Apparently grub2 puts /sdc before /sdb when listing out under the ls command in rescue mode??
I have tried several times to run the "install-grub" command, and it always comes up with no errors.
Should I try installing grub2 to the first drive /sda (hd0) instead ?
Whenever I try to enter in the commands from the tutorial https://help.ubuntu.com/community/Grub2, I always get "unknown filesystem" error. If grub2 cannot read anything, then obviously I cannot boot the system.
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Apr 24, 2010
I'm trying to install netbook remix on my out-of-the-box 1005PE with windows 7. I used LinuxLive USB Creator 2.4 to put the netbook remix file onto my usb device. I get to the part where I choose whether I want persistent mode, live mode, installation or a few other options. I chose installation. Here is what I see on my screen starting a little before where I think the error is:
Begin: Running /scripts/casper-premount ...
Done.
Done.
BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu7) built-in shell (ash) Enter 'help' for a list of built-in commands. Unable to find a medium containing a live file system I've tried the whole process several times. I've tried redownloading the netbook remix file, reusing LinuxLive and trying Unetbootin-windows-433.
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Jan 31, 2010
I've been playing around with an old laptop and a hand full of Linux distros. I found that each Linux has a kernel "vmlinuz" and a initrd "initrd.gz" no matter how you boot the distro it uses these to files. I have CrunchBang Installed on my laptop I put a copy of the ubuntu live disk in the location
/home/user-pc/ubuntu/
I added a new boot option for grub It looks like this
Title Ubuntu
kernel /home/user-pc/ubuntu/casper/vmlinuz
initrd /home/user-pc/ubuntu/casper/initrd.gz
This boots like a normal cd only problem is while its booting it tells me it cant find the file System. This happened for every single Linux distro I tried to boot. Is there something I am missing here is there a way to tell the boot peramiter where the file system is I think what it means by file system is the "filesystem.squashfs" file.
I have 2 questions
1. Is there anyway to tell the grub loader that this is the file system. To make the live CD boot properly.
2. How do CD's work is it not the same?
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Nov 14, 2010
I've installed a Squeeze-based distro - Crunchbang - with an encrypted root partition (no LVM), and it won't boot.
Here's what I get: Loading initial ramdisk. Loading, Gave up waiting for root device ALERT! /dev/mapper/hda5_crypt does not exist. Dropping to a shell!
Here's my partition table:
hda1 - Windows (Truecrypted)
hda2 - GRUB2
hda5 - /
hda6 - unused swap
[Code]...
What should I look for? Where do I go from the initramfs shell? Do I chroot? What then? This might be a Crunchbang issue (although others blame LVM which I didn't use, and it's the original Debian installer after all), but there's gotta be a reason it doesn't boot
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Aug 31, 2009
i made a live usb stick with a original live iso image of f10 following carefully instructions of fedora support comunity once i finished i had tested it and i had the same problem (warning can not find root filesystem create symlink /dev/root and then exit this shell to continue the boot sequence, bash: no job control in this shell) of the following person:
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Sep 11, 2010
I've decided to give ubuntu another test drive now that I got a bigger and better desktop. I downloaded the latest version of ubuntu, loaded it into my usb stick and booted from it. I then clicked on the install icon on the desktop to start the installation. Everything was going ok, until I came to the partitioning part. I had already (on windows 7) created a separate partition for ubuntu which is 56GB. So I chose "manual partitioning" and selected the ubuntu partition as /home and began the installation.
Everything seemed to have went well, the window suddenly closed and then nothing happened. I waited for 15mins and still nothing happened. I decided to restart and see what happened, but I discovered that I couldn't boot into windows anymore. It said something about intel boot manager cannot find filesystem. So I decided to boot back from the usb and see if I can reinstall ubuntu, I came to the partitioning part and all the drives were gone, I couldn't see anything, it was blank.
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Dec 1, 2010
I am trying to install I get some sort of error relating to the hard drive, on ubuntu it's that it can't find an active filesystem, on XP it blue screens and tells me to run chkdsk. I've tried with a few different hard drives, all of which allow me to boot into the already installed OS fine, but give me the exact same error when trying to install an OS. After playing around taking the hard drives in and out and reformatting them it will occasionally get past the problem, but not without a significant amount of screwing around, and if I don't install on that occasion and just restart without changing anything the problem will reappear.
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Mar 7, 2010
i initilally installed ubuntu 9.10 then installed windows 7 ,then i recovered grub2 using livecd as told in the post [URL] i did "sudo update-grub" and got windows 7 menu entry but when i select that entry windows 7 does not load but the grub2 is reloaded again.
i cant boot to windows 7.
Windows 7 have 100 mb partition "System Reserved" the grub2 points to that partition but still windows 7 not loaded.
sudo 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: 0x3c3a81f5
[Code]....
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May 17, 2010
I went through so many post but I haven't found the proper answer yet hope you have an Idea1. Grub2 saves only Linux OS as last selected no Windows OS2.It is possible to boot into a cdrom (drive)?
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Feb 24, 2010
I had grub trouble with a hardware change and have been trying to solve this. I think I have done more harm then good. I can not boot into Ubuntu or Windows 7. Here is the boot info script and other info on my problem. Can someone please help me with this,
Code:
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
ubuntu@ubuntu:~$ sudo os-prober
/dev/sda1:Windows 7 (loader):Windows:chain
[Code]....
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Mar 19, 2010
I'm playing with my hard drive partitions and trying out different O/S versions so I want Grub2 to be aware of them on its boot menu. Currently I'm using the maintainer's version of Grub2 that came with karmic. Do I have to do a re-install of Grub2 or is there a makefile I can use? Specific commands that I would need be nice.
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Jan 7, 2010
So I'm having DNS issues (with my router it takes too long to resolve) with 9.10. If I'm using GNOME I can just change the preferences. But where do I find those preferences on the filesystem?
I modified /etc/resolv.conf to just use Google DNS and it works great, but then something overwrites it with my router DNS. I guess that's a generated file, but what do I edit to change the generator?
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Jun 23, 2010
When i connect my mp3 player to my computer it creates a "drive/folder" for it on my desktop and places it in my Place menu.. but i can't find the mp3 player in the /media folder. Does anyone know why this is? or where i could access the mp3 like a normal folder?
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Aug 23, 2010
I am currently running Jaunty 9.04 and find the xorg.conf in /etc/X11. I just booted Lucid 10.04 from the Live CD just to take a look at things. I could no longer find xorg.conf any place in the booted file system.
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Sep 15, 2010
when I start my laptop (Ubuntu 10), it even doesnt offer log in and writes this:mount: mounting/ proc on / root/ proc failed: No such file on directory Target filesystem doesntt have sbin/init. No init found. Try passing init=bootarg.device scan complete, Attached scsi generic sg2 type 0I tried to restart it several times, but it shows the same. The evening before I used it to show some files on projector and after I disconnected my laptop from it, it was a bit slower, but working. And the next morning I get that message. As I just started with Linux,
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Dec 5, 2010
Sda2 is normally xp windows, but it installs a wrong partition type, and when I apply the mbr.bin, it works again with grub2, nope, it says:
Code:
autochk not found
Code:
# fdisk -l
Disk /dev/sda: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0005c9c1 .....
If I put the mbrofxp.bin (bs=512 count=1), then xp boots well but no grub2 so no linux
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Dec 15, 2010
I changed the grub2 on my /dev/sda to Arch's version, instead of Ubuntu's, and now I keep booting into the initramfs prompt whenever I try to use Ubuntu. The automatic OS detection won't find it when I run the mkconfig command on grub2's wiki, and I currently have the following in /etc/grub.d/40_custom:
Code:
enuentry "Ubuntu Linux" {
set root=(hd0,3)
linux /boot/vmlinuz-2.6.35-23-generic
initrd /boot/initrd.img-2.6.35-23-generic root=dev/sda3 ro quiet
}
Which according to my partition layout, and a double check on gparted, is correct. Do I need to flag it as boot or something else? I tried putting Ubuntu's grub2 back on with the live cd but it kept saying /dev/ was busy.
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Mar 10, 2010
How does Grub2 find the grub.cfg file?
I have (among others) these partitions:
/dev/sda5 'newsys' - my current system partition (Ubuntu Karmic, 64-bit)
/dev/sda2 'oldsys' - the original system partition
/dev/sda1 'boot' - mounted at /boot when running 'newsys'
[Code]...
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Dec 22, 2010
I am facing a strange problem in my server, One of my filesystem shows as 3.1G when I execute df -h command and the utilization shows as 83%, but when I cd to the directory /usr/local I could not find any huge files in that filesystem and I have searched for hidden files as well,
groupserver:~ # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda9 3.1G 2.5G 532M 83% /usr/local
groupserver:/usr/local # du -sh *
0 bin
93M abinav
[Code]...
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Jun 27, 2009
I have successful tar an existing CentOS 5.2 partition from Fefora10. The idea is to move a working CentOS 5.2 reside in an internal hard drive to a portable hard drive. I know how to edit a stencil in menu.lst to boot the clone CentOS5.2. During boot, I encountered
Red Hat nash version 5.1.19.6
mount: could not find filesystem /dev/root
setuproot: moving /dev failed No such file or directory
setuproot: mounting /proc: No such file or directory
setuproot: mounting /sys: No such file or directory
[Code]...
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Jul 23, 2011
I have a raid array using mdadm made up of two drives. The drives have two parts, the first for boot information and the 2nd for LVM. Everything but /boot is under LVM management. Originly the two drives were hooked up to a sata controller in a computer with no on-board sata. However I was not able to get the computer to boot to a sata drive off of that controller. So there was an IDE drive with the MBR that loaded grub.
Now the computer in that setup seems to have died. So the drives were moved to another computer with an on-board sata controller and now the bootup works as far as getting to the grub menu. However after the grub menu the error message "Cannot find root device"
I found the boot info script [URL].. note at the time that was run the computer was running with one drive that has a full Debian install with the raid drive in question mounted and chrooted into. The script was ran from the chroot envirment.[URL]..
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Aug 15, 2009
I am trying to boot Debian Live, using Grub, from a folder on my hard drive which is basically the contents of the iso.
Here is my menu.lst:
However, on boot, after a while, it says boot failed. The error message it gives is: "Unable to find device with live filesystem" or something similar.
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May 18, 2011
I am very new to linux, and I have a question regarding the filesystem check (fsck). The power recently went out and when I tried to restart linux the following error appears:
*/dev/sda1 contains file system w/errors, check forced it then goes on to say..
*An error occured during the file system check. Dropping you to a shell; the system will reboot when you leave the shell. Give root password for maintenance (or type Control-D to continue) I wasn't sure what to do, but checked some other online forums and they suggested running fsck manually - so I typed in the root password - and used the command, "fsck -A -V ; echo == $? ==" it then gave the following message
*WARNING!!! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage
*Would you like to continue (y/n)
Again, I wasn't sure what to do so i just checked no. I then manually turned off the computer and was prompted at the beginning to press Alt-3. I was brought to another screen and it informed me one of the drives was degraded and suggested rebuilding the array. I tried doing this, but it still brings me back to the original error of, "/dev/sda1 contains file system w/errors, check forced," and the process continues.
Also, when I tried to rebuild the array, I didn't backup any of the data on our home directory before doing this (which was probably a big mistake). After being prompted to type the root password, I was able to give the ls command and look at all the directories...the home directory where our data was stored was empty and I am afraid I may have lost some information. Is there a possibility that data was lost when I was trying to rebuild using the old drives?
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May 11, 2011
Specifically, I'd love to know what the valid values of:
And, where I can find this information? I've always wondered if it was documented somewhere, or if there was an interface into the kernel to query for it.
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Apr 13, 2010
I'm relatively experienced with UNIX and Linux, but this has me thrown for quite a loop, and it seemed like such a simple question. How would I go about finding the newest file in a file system? I thought something like:
Code:
ls -ltr `find /usr -type f`
would work, but I seem to be exceeding the argument maximum for ls:
ksh: 0403-029 There is not enough memory available now
I thought something involving xargs might work, but I really suck with that command.
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May 12, 2010
I'm logged into a server through the CLI and did a df -T and confirmed all my volumes are ext3. but when I do a tune2fs -l /dev/sde it tells me
tune2fs 1.39 (29-May-2006)
tune2fs: Permission denied while trying to open /dev/sde
Couldn't find valid filesystem superblock.
I don't have root access on the server, but is that why it's complaining, or is my syntax incorrect?
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Jul 9, 2010
I have a following problem: Recently my drive with Ubuntu 9.4 has mysteriously stopped working, i.e. when I switch the computer on it informs me that GRUB didn't find the filesystem. Well, I suppose it happens.
First, I though it was due to the drive dying, but I popped it in an external enclosure and HDTune told me the drive was fine. Wanting to recover the files on the drive before reinstalling I first tried to mount it in said external enclosure under Windows (I have Win Ext2 driver installed which used to work just fine). This time, however, drive gets assigned a letter but upon opening it Windows popped up an error saying that the drive was not formatted and whether I would like to format it then.
Unfazed by this streak of failures I tried to mount it under Linux but, alas, to no avail. I might have tried every single -t operator under mount command but it still won't budge and let me mount.
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Apr 26, 2011
I have a CIFS share mounted from the "Places" menu and it is accessible from the desktop.I am unable to find its location in the filesystem using "mount" Where does it get mounted to?
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Apr 28, 2011
Under Linux, I'm looking for a command to list the biggest file and/or the biggest directories under a directory.
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