CentOS 5 :: Partition Table Cannot Be Read

Dec 19, 2010

On my old centos 5.2 installation, yesterday my system stopped. The only daemon working was the ping. Every other were not working ( http, svnserver, vncserver, ssh ... ) but yesterday morning everything worked fine! Since the system is headless, I rebooted the computer this morning. Then it never came back. I placed a screen on the computer and when the computer boots, I can see : loading grub stage 2 then I have a black screen with grub>

There is something wrong ... I'm sad because I moved in my new house and did not took the time to restart my backups ( in fact, I did not found the AC adapter for the external drive ) ... I downloaded the brand new centos 5.5 installation DVD and when I try to upgrade my system the installer tells me that the partition on 1 hd is not readable. Then I ignore the message but before getting to the partition manager, it tells me that the partition table for the lvm 00 ( /home ) can not be found and I have to reboot. Since this hard disk is the biggest ( 1tb ) and all of my data is on this one, I'd like to know what I can do to recover this data ?

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Ubuntu :: Change Sda2 Partition To Ntfs - WARNING: The Kernel Failed To Re-read The Partition Table

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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Fedora Hardware :: Can't Read Partition Table After Install F13?

May 27, 2010

I have installed the fedora 13 x86_64 live cd. I updated fedora as well as installing gparted.y hard disc containing my operating systems is not being read by gparted.unalloacted partition table. Also i am not able to mount a ntfs parition on the same hard disc.I did create the partition table on all hard discs with gparted livAnybody else had this problem? A kernel crash is also reported.DIT:I booted ubuntu 10.04 and opened gparted v5.1 without any problem. I booted fedora 13 again and now gparted 5.2

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Ubuntu Installation :: Unable To Read Partition Table (10.04)

May 1, 2010

I'm trying to install Ubuntu Linux 10.04 on my computer with following specs:

ASUS P5KR Mobo
HIS 2600XT GFX
160 GB Hitachi Harddisk (SATA)
500 GB Hitachi Harddisk (SATA) - Only for Data.

The 160 GB Harddisk is currently split into 3 main partitions: i) 200 MB created by Win7 setup.

1) Windows 7

2) Leopard OSX

3) Partition formatted in Leopard as Journal which is empty, meaning I can convert this if I want and onto which I will install Ubuntu.

My problem is that despite booting up fine, installer starting and working fine, it cannot however detect my partition table, it thinks its unallocated.

The funny thing is that I can mount the partitions and view the data but the installer however can't see it.

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Feb 3, 2011

So I decided to reinstall my 10.10 to undo the 'encrypted home folder feature.' I know are other ways to undo the encryption, but for various reasons I'd rather just do a quick reinstall and start fresh.Currently, I dual boot linux and windows, each with their respective partitions. There is also a storage partition that is fat32 to swap files between the two OSes. So the partitions are:

[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 21, 2010

I have an external USB drive, with GPT partition label. The drive is cut up into two ~1.5TB partitions When I plug this into my CentOS 5.5 box, the drive is not detected. Instead, dmesg gives me this:

usb-storage: device found at 7
usb-storage: waiting for device to settle before scanning
Vendor: Seagate Model: FA GoFlex Desk Rev: 0155
Type: Direct-Access ANSI SCSI revision: 04
SCSI device sdh: 732566645 4096-byte hdwr sectors (3000593 MB)
sdh: Write Protect is off

[Code]...

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Software :: How To Read Ntfs Partition In CentOS

Oct 4, 2010

I've installed two Linux distributions in my PC, Fedora12 and CentOS 5.5, and also Windows in a ntfs partition. I can operate windows partition in Fedora easily, however, I cannot find the windows partition in CentOS, furthermore, in CentOS all mobile hard drive that formatted as NTFS cannot be mounted.

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CentOS 5 Networking :: Proxy - Error "can't Initialize Iptables Table `nat': Table Does Not Exist"

Aug 19, 2011

We purchased a virtual server from GoDaddy (1 month trial) to set up as a proxy for our networks (24 of them). I am having 2 separate issues. The first is I can't configure/install NAT and support is telling me the only way I can is to purchase a dedicated server. Here's the error:

iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 3128 iptables v1.3.5: can't initialize iptables table `nat': Table does not exist (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded. Here's the fix: [URL] So, what I am hoping to do is configure this by just opening port 3128 directly, and only allowing access from our networks. As a test I did this and allowed only from our office and it did not work. However I can't connect, so I am wondering what I am doing wrong? Here's my squid configuration:

[Code]....

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OpenSUSE Install :: Invalid Partition Table / Error Message Corrupt Partition?

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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General :: Automating USB Drive Configuration Of Partition Table, Partition And File System

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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Hardware :: Invalid Partition Table For Swap Partition That Moved With Gparted?

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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Ubuntu :: Tell Kernel To Reread Partition Table While One Partition Mounted

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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General :: USB Flash Disk Partition Disappeared As Well As Partition Table?

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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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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Aug 26, 2010

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Apr 12, 2010

I'm having a slight dilemma on reading data from a text file and outputting it into a table then displaying it. Basically I'm writing a shell script that takes information from text files then outputs the data into a table with 4 headings.he extracting of the data is fine, but creating a table i'm having problems with. I think it is possible to do it using the awk function, but so far i'm having a lot of difficulties.

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Apr 25, 2010

I switched back to Fedora after a long time and wow a lot of things have changed! Fedora 12 is looking amazing and the best part is I could install it on my USB so easily. And then I found I couldnt open any PDF files on Fedora - I tried installing AdobeReader, xpdf and openoffice. All of them are just throwing some file format errors.... <I cant push a screenshot now since i removed the packages>

Initally i thought it might be some version conflict but it turned out I couldnt open any pdf's including docs from 5 years back to docs with embedded media content. I know I havent put any info here. I am looking for a little info on what is needed to get Acrobat/Xpdf working in Fedora 12... And I couldn't get any errors logged so I'd like a little help there if I need to share some debug messages...

that gave these messages [root@localhost Presentations]# evince module-development.mgp.pdf
** (evince:5768): WARNING **: Failed to create dbus proxy for org.gnome.SettingsDaemon: Could not get owner of name 'org.gnome.SettingsDaemon': no such name
Error: May not be a PDF file (continuing anyway)
Error: PDF file is damaged - attempting to reconstruct xref table...
Error: Couldn't find trailer dictionary
Error: Couldn't read xref table

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Aug 23, 2010

I installed Ubuntu as shown in the wiki and when I went to restart it gave me a lovely blinking cursor and nothing else. So I held down option, loaded into osx, reinstalled rEFIt and got my menu on startup. Unfortunately, the partition sync tool doesn't seam to be working, it gives me an error: Status: MBR partition table is invalid, partitions overlap. Error: Not Found returned from gptsync.efi

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Jul 18, 2011

I originally had an Ubuntu partition on my hard drive which occupied about half of it. I installed Windows 7 in the remaining unallocated space and I was planning on doing a grub update from a live cd afterwards. BUT when I looked at my partition table, the space where the ubuntu partition used to be is now unallocated space!

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Oct 30, 2010

I've been using Ubuntu 10.10 for just under a week. Recently, a partition called 'Data' has disappeared, and all my music and documents along with it. The folder is not to be seen in Places or on my desktop. My only way of finding it is to go to terminal. But when I try to open it there I get an error saying I don't have permission to read it. In Puppy Linux and SliTaz I can easily find the partition and read it. What should I do to bring it back in Ubuntu?

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Nov 5, 2010

I need to copy partition table for sda, I have 3 primary partitions and 1 extended partition on sda. I understand that fdisk cant copy extended partition table and I need to use sfdisk.

Correct me if I am wrong -

1. For primary partitions

Code:
dd if=sda-mbr.bin of=/dev/sdX bs=1 count=64 skip=446 seek=446
2. For extended partition
Code:
sfdisk -d /dev/sda2 > backup-sdX.sf
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Oct 8, 2010

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Oct 18, 2010

I Inadvertently deleted a good partition while trying to clean up after a 10.10 update install failure that left grub broken and prevented me from using my working Linux partition. (installed 10.4 in a new partition) Used testdisk to restore the deleted partition which resulted in the entire partition table being wiped out.All partions are gone, win Xp, 2 Linux partitions, 2 Linux swap partitions.Testdisk deep search does see the partitions but will not recreate the table.

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Jun 11, 2011

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Feb 21, 2011

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Jul 27, 2010

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