Debian :: The SuperBlock Is Unreadable And The Partition Table Was Not Found
Dec 24, 2010
i have got an Debian Lenny NAS with 7x1,5TB of a Softwareraid5. Kernel Version is 2.6.32. The Raid ist mountet in /media/raid5. The System ist on a seperate disk and work fine. After i tested the performance of the raid with:
dd if=/dev/zero of=/dev/md0 bs=1G count=1 oflag=direct
Since i had done this i cant find any Data on /media/raid5. cat /proc/mdstat and mdadm --detail /dev/md0 looks fine. All UUID's are good. But: The SuperBlock is unreadable and the partition table was not found. mke2fs -n /dev/md0 shows some Backup of the Superblock , but i cant repair it with fsck.ext4: Illegal inode number on /dev/md0.
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Oct 23, 2010
i used to have ubuntu 9.i decided to move to sabayon so i used the live cd to install it ,resize the ubuntu partition and use the remaining space for sabayon.while the resizing procedure i got an error(i dont have a copy of the error log file but i know it has something to do with an anaconda process).i aborted the installation and the result was an filesystem that couldnt be mounted.when i try to mount the hdd i get this:
Code: Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so and this is what i get from fsck: Code: $ sudo fsck -f /dev/sdb1
code....
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Aug 6, 2010
Is there a difference between using GPT partition table when formating hard drives and MS-DOS partition table? What are the advantages/disadvantages of using either?
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Dec 26, 2014
I'm trying to boot into the Live CD (64bit version) and it dies with an error "nouveau .... 0x8DF6 Init table command not found: 0xA9". Get the same error after I install and try to boot into Debian, it starts booting but errors out later.
Running Intel 4770K on Gigabyte Z97X-UD5H with 8G ram, Nvidia graphics card and several SSDs ...
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Mar 17, 2010
I had 40 gb of unused space at the beginning of my drive, then a 15gb primary ext3 partition for /, then a 100GB ext4 primary partition for /home, then a 4 gb extended partition that contains two 2 gb swap partitions.
I installed FreeBSD on the empty space at the beginning of the drive. The slice I created did not start on the first block. There were a few MB of free space before and after it.
After the installation finished (with no errors), grub would hang on the "Grub loading/Welcome to Grub screen". I booted a squeeze CD in rescue mode and reinstalled grub to /dev/sda. After rebooting, Grub still hangs at the same place.
I booted a live CD and checked the output of fdisk. For each of my partitions, it says "Partition does not end on cylinder boundary". I am hoping that whatever happened to my disk is not recoverable. Fortunately, I backed up some essential files beforehand, but I still don't really want to lose my old squeeze system.
Right now I am fscking all partitions.
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Jul 8, 2011
had a bad experience when Fedora 15 overwrote the ext4 partition of a data disk to MVL during the installation process.I cloned the HD and now I am working on it. However, my first attempt resulted in 900.00 number-renamed files into the lost+found folder. And that's not what I want: with this number of files I need to recover the directory structure and the files real names.I know this is a hard issue for being discussed in the forum and that I shall look for some expert help, but, I wished to useis bad moment as an opportunity of learning.
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Oct 31, 2010
This computer that I got as a gift runs windows just fine but being as I am a linux fan I would really like to run linux on it.I tried installing Ubuntu on the PC but it just caused some very very strange problems. (Text placed randomly on the screen + strange sounds coming from the computer).I tried installing Gentoo (my favorite distro) on the PC and it can't find the superblock on the drive. (Error during bootup)I low level formatted the drive and repartitioned it before installing gentoo.
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Apr 6, 2010
I have an unallocated space at the end of my hdd, which is about 10 gb. I installed Pardus on that space, but then deleted the partition to install something else (I know I did not have to delete it, I could simply install the new thing over it), i dont remember exactly how, but it was from my Debian System, not from a LiveCD.Now, I am unable to use that space. GParted gives an error and says:Warning: the kernel failed to re-read the partition tableon /dev/sda (Device or resource nusy). As a result, it may not reflect all of your changes until after reboot.
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Jan 21, 2015
I have just installed the newest Debian Stable 7.8 release on my new notebook. Before installation I had to free some disk space from the preinstalled Windows7 with ntfsresize and fdisk. In addition to the existing three primary partitions I created an extended one with three logical partitions for /(root) /home and swap, see the output of 'fdisk -lu'
Code: Select allDisk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x196585ba
[Code] ....
Partition table entries are not in disk order
For some reason I put a bootable flag on sda7, and the only small concern during installation was that some BIOS systems might not work with boot-flag no logical drives. Now, every time I boot I get this "Invalid partition table!' message which I must 'enter" away before I get to the GRUB menu.
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Jan 16, 2011
Do i have any chances to restore my windows partition table after tried to install debian and i used the entire disk instead of the free space i had alocated for this
after i figured out what i did i stoped the installation but was to late ... i answered yes at write partition table changes on disk question
i tried win7 automate recovery tool from dvd and manual install of mbr with no successful result
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Jan 2, 2010
I have come across a problem on my Scientific Linux, I have searched the forum but couldn't find what I am looking for, so I decided to post my question here.well, here what I did: under the Terminal I got Cramfs-1.1.tar.gz installed, and then i used the "make" command to build the cramfsck and mkcramfs and it was all successful.so now I have an image I called it "backup.img", and I tried following command:./cramfsck -x ./output backup.imgbut unfortunetly I got the following message:./cramfsck: superblock magic not foundSo I kept on thinking what is this Superblock magic thingy? I did a google search but I kind of got lost and didn't end up finding anything useful, but I am just thinking it could be some kind of package which I need to install? I tried the following command:apt-get install magicbut it seems there is not such package exists with that name.
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May 5, 2010
I'm trying to define the partition table type (I want to set it to msdos) for an automatic installation using preseeding file. (Why? I want to setup a software RAID 1 with two 2TB disks, by default the installer uses gpt partition tabless on those disks, where it's tricky to install grub(2), as there is no mbr, and the root partition is on a md device) During manual installtion it is possible to set the partition table type (by setting debconf priority to low).
[Code]...
Does anyone know what I have to put in my config file so that a msdos partition table will be created Also any other solution is welcome. I just want to have my root partition on a raid 1 and have grub installed, so that it boots up (No other OS is installed on the boxes. Debian squeeze is used)
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Apr 17, 2016
I update Jessie "stable" 8.2 to 8.4 and now I get 5 minute interval kernel messages:
Apr 18 06:39:52 OraHost kernel: [131985.494726] sdc: unknown partition table
Apr 18 06:45:03 OraHost kernel: [132295.755942] sdc: unknown partition table
Apr 18 06:50:03 OraHost kernel: [132595.946564] sdc: unknown partition table
Apr 18 06:55:13 OraHost kernel: [132906.139327] sdc: unknown partition table
Apr 18 07:00:23 OraHost kernel: [133216.340555] sdc: unknown partition table
I believe this has something to do with an mdadm update which was included in the release. When I configured the array, I didn't partition the disk devices, so maybe that has something to do with it. I am thinking of rebuilding the array and partitioning prior to build, but a quick fix would be referable.
And also something appears to have happened to the raid device since the update.
Prior to update, the array was /dev/md0 - now it is /dev/md/0 which is a symbolic link back to /dev/md0.
mdadm --detail --scan now reports /dev/md/0 where previously it reported /dev/md0
I created a new RAID1 array on a fresh system and immediately after the create, these messages appear at 5 minute intervals.
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Jun 16, 2010
I have a x64 OpenSUSE server with two hard drivers installed. The first one is used for the / and /home partitions and the other is for backups. Ironically enough it is the backup hard drive I am having trouble with. I was having trouble writting to the drive and unmounted it to preform a fchsk, however now when ever I try to mount it I get the following error:
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
Does anyone know who I can repair the drive and retrive data?
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May 14, 2011
After several crashes during videos it seemed like a good idea to fsck root. Downloaded the latest systemrescuecd and ran it at boot. The error message was 'bad magic number, corrupt superblock' with a suggested command to try another superblock. That failed with the same message. Tried tune2fs to force fsck at boot and got the same message. The drive is less than 6 months old and the installed system is working more or less ok. The command I used was 'fsck.ext4 /dev/sdc2'. What am I doing wrong?
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Oct 19, 2010
So I set up my laptop dual boot with XP, now when I try to open text files, word docs, etc with get or doc files get error message with Gedit and with open office shows crazy unreadable characters?
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Jul 6, 2010
I installed windows 7 over an existing xp partition and windows 7 made a 100 mb partition as some sort of windows swap space thing. This basically made my ubuntu partition unreadable, even with gparted. How to recover this data?
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May 20, 2010
I was installing opensuse 11.2 in parallel with windows xp.but during installation suddenly power has gone and after that opensuse is giving me the error message corrupt partition.i am also not able to login in xp. so I decide to reinstall windows, I got the error saying "invalid partition table" after the first restart of windows xp installation.
I tried to use windows system recovery console and committing fixmbr and fixboot commands, but didn't work.
i have 2 window partition(1 for windows and 1 for data).i do,nt want to format 2,nd partition.
How can I installed windows?My plan was first to install windows xp, then opensuse again.
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Jan 26, 2011
I have tried to automate the configuration of a usb drive with not much success.
The problem that I have is that I have a large amount of usb drives that have a partition table of type "loop" and I need to change them to "msdos". The size of the drives vary and I need to use FAT32 or FAT16 file system.
I've tried various partitioning commands and gui applications but cant find one that I can give a one line command to to set the partition table, maximum partition size and file system.
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Feb 8, 2010
I was reading another thread about someone with a bad partition table and I decided to join this forum. I'm not going to take any drastic actions with the partition (/dev/sda3) in question. I am going to wait for instructions on what to do first. I am not very good with Linux and need some hand holding. System: DELL 4550 Dual-Booted with XP and Ubuntu. Works OK, just no swap. Well, here's what I did: I deleted a partition for Windows XP Pro because it was a trial, and it ran out. I then decided to slide the swap partition for the Ubuntu Linux that I dual-boot into over. (If this was successful, I was going to try expanding the root partition to take up the unused space.) I used Gparted on a CD to do this, as I figured it was safe to do.
I now cannot mount the swap space at bootup (and have to go into a backup version of the OS), although I can use Gparted in Linux to execute the "swapon" command, and it appears that it worked because I now see "swapoff" as an option on the context menu. (I actually don't even need a swap partition, except to hibernate.) If I highlight the swap partition and click on "Drive" on Gparted's menu bar and select "Create Partition Table", it will erase all data on /dev/sda, so how do I fix the bad partition table non-destructively?
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Apr 24, 2010
Everything is installed and setup on my system, but when I setup my partitions I chose my Windows partition to be bootable. Can I just use cfdisk to toggle the bootable flag so my linux partition is bootable and rewrite the partition table?
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Jun 10, 2011
My colleague needed a backup for some of his loose media, so I assured him I could back it up on our Lab's Lacie 2TB external. His windows partition was incredibly sluggish, so he booted into ubuntu 11.04 and we partitioned and formatted an NTFS volume for him to transfer his stuff to. The format went fine, space was available, and I left him to transfer all of his stuff from his dell studio1555. He finished and reformatted his computer completely.
The NTFS is not recognizable by any of the OS now. Ubuntu sees it as a single partition without any data, whereas before the transfer, the partition map was clearly visible. Windows does not recognize the drive at all. OS X does recognize the partition, but it shows up as an apple_scratch volume, which is quite a bit frightening, considering a scratch volume is essentially blank. To elaborate, all of the files were in his windows partition, and were transferred within a relatively fresh install of ubuntu (not much had been done on it). The partition was made in diskutility in ubuntu (the GUI), but the rest of the drive was HFS+ formatted.
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Mar 27, 2010
I want to change my sda2 partition to ntfs type. i have installed GParted but it is returning a strange type of error. Here is the error dump file...
[Code]...
WARNING: the kernel failed to re-read the partition table on /dev/sda (Device or resource busy). As a result, it may not reflect all of your changes until after reboot. WARNING: the kernel failed to re-read the partition table on /dev/sda (Device or resource busy). As a result, it may not reflect all of your changes until after reboot.
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Feb 5, 2010
Is there a program that will reread the partition table and update the kernel even if one of the unmodified partitions is mounted? I installed my system on one partition, then I added another with free space. Now I want to format the second partition, but the kernel doesn't know about it yet. I tried sfdisk -R /dev/sda, but it refuses while the root partition is mounted. Is there anyway I can avoid rebooting?
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Feb 17, 2011
USB flash disk partition disappeared as well as partition table I'm not sure about the cause
Code:
root@u# less /var/log/syslog
usb 5-1: New USB device found, idVendor=058f, idProduct=1234
usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[code]....
Where did the partition table go? The device had one ext3 partition something around 4GB(size of USB storage device). I need to restore few files from this device.
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Nov 19, 2009
I'm trying to clone a Linux install to a different laptop. It's made a little complicated by two facts:
1) The 'new' laptop I'm trying to copy my Linux installation to is actually older and has a smaller hard drive then the computer I'm copying from
2) The computer I'm copying from has both a windows and Linux installation; I only care about the Linux partition.
I figured I would copy only the Linux partition from my primary computer to the laptop, sense the laptop doesn't have a large enough hard drive to copy everything. So I used the DD commands to copy SDA3 (main Linux partition) from my main computer to SDA2 of my laptop. When I came back a few hours later I was surprise to find my laptop trying to reboot itself (I never turned it off). It would keep starting to reboot, failing, and restarting itself. Not too surprising sense its boot partition wasn't changed so it's trying to boot into centos when I copied a redhat partition to it.
The problem is that when I used a redhat boot disk the rescue mode was unable to find a Linux partition to mount. /dev/sda2 exists, but trying to mount it gets the complaint "No such file or directory". "fdisk -l" lists sda1 (the boot sector) and sda2. Sda2 is the correct size and reports Linux LVM for its system. But "fdisk -l /dev/sda2" gives the error message "Disk /dev/sda2 doesn't contain a valid partition table" Did I not clone the drive correctly, or was an error caused due to the boot sector not being copied yet (the laptops boot sector is smaller then my old computers, so I can't copy from old computer to laptop)? Can I salvage the laptops partition table somehow, or do I have to repeat the cloning process? And if I do have to re-clone my computer can anyone tell me what I did wrong the first time so it works this time? I don't care if I copy just the Linux partition or both windows and Linux. Even though my main computer has a larger hard drive I'm only using about half of its available space so it should be possible to copy both partitions if I could ignore the unused sections of the harddrive.
Edit: I used DD to copy a tiny part of the Linux partition from my laptop so I could look at it. Most of it is illegible binary of course, but I scrolled through till I found some text right near the beginning:
Code:
VolGroup00 {
id="F2MWxh-....-BidcLe"
seqno = 1
[code]....
So it seems that the DD command did copy everything over to the laptop, which is good to know. I noticed that it says device="/dev/sda3" right in the middle of the code I just posted. The Linux section of my original computer was SDA3 but I copied it to partition SDA2 of my laptop. So is the problem because the boot partition is for the wrong device? I don't suppose if I modified that one line to say SDA2 it would be able to load correctly? (Not that I know how I would modify the line, short of using the DD command again).
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Jan 9, 2011
Last night I rebooted my desktop and it failed as in it just kept resetting after the bios post...so I changed my boot drive which gave me a "no bootable drive found" error(this confirms hdd fault) thee I booted a live cd and checked my partitions
They are as follows
sda1 - boot(ntfs)
sda2 - windows(ntfs)
sda3 - swap
sda4 - ubuntu(ext4)
I tried to mount sda4 to reinstall grub but it failed...says the partition is corrupt sda2 has no problems and I made a backup for it now the problem is how do I perform a disk check on sda4 and how do I get my system up and running again? I dont want to reinstall!
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Oct 5, 2010
What I believe has happened is that I've corrupted the partition table. Essentially one of my partitions' ending point exceeds the maximum number of cylinders/sectors on my drive.
Essentially I have the same problem as on the thread @ [url] but do not know how to fix this and am afraid to reformat/partition based on sectors without really knowing what I'm doing here.
[code]...
When I try to look at SDA in GParted everything shows up as unallocated (though it's obviously not) and it says
[code]...
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Jul 29, 2011
In my efforts to resize my BTRFS Partition, I accidentally unmarked my BTRFS partition as being BTRFS, and can't mark it back as I can't find the numeric ID for BTRFS and how to apply.
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Jan 5, 2014
i was trying to install Debian for the first time (after trying ubuntu, which could not get installed at all) on my new notebook, along with Windows 8. During the installation process i got a message saying No EFI Partition was found. I could not do anything about it so i ignored it, completed the installation and now when i start the computer it just goes straight to Windows 8.
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