Expanding root partition bad magic number in super block while trying to open devmmcblk0p2. Bad magic number in superblock while trying to open dev. Bad magic number in superblock while trying to open devsda2 what i think it happened, is that after installing windows your partitions numbers got twisted a bit. Bad magic number in superblock while trying to open. If your company has an existing red hat account, your organization administrator can grant you access. Bad magic number in superblock while trying to open devhda6. Mar 10, 2017 this post describes step by step procedure to resolve bad magic number in super block error while booting up the linux operating system. Not sure whats going on there, but my new volume still only shows 200gb, when in fact its an 800gb volume. Bad magic number in superblock tune2fs is part of the e2fsprogs package, which provides tools for the ext family of filesystems. How can i recover a bad superblock from a corrupted ext3 partition to get back my data.
If you are a new customer, register now for access to product evaluations and purchasing capabilities. From my understanding defragmenting files is not really needed in linux, but out of curiosity was googling on this subject and found these commands and was playing around with them. If your system will give you a terminal type the following command, else boot linux system from rescue disk boot from 1st cddvd. Expanding root partition bad magic number in superblock while trying to open devmmcblk0p2. If the device is valid and it really contains an ext2 filesystem and not swap or ufs or something else, then the superblock is corrupt, and you might try running. I think that it is expected that users should be able to figure out that using an ext specific tool is not going to work on other filesystems. Bad magic number in superblock while trying to open devvdc1 couldnt find valid filesystem superblock. The primary copy of superblock is stored in the very first block group. Bad magic number in superblock while trying to open devsdel devsdel. Cant repair super block, bad magic number unix and linux forums. You can use fsck o b to replace the superblock with one of the copies.
And i have to add a new xfs file system on a new virtual hard drive. Filefrag tells you how fragmented a file is and e2frag will defragment it. I transpired that i had used tune2fs while the usb partition was mounted. How to resolve bad magic number in superblock error ux techno. Bad magic number in super block while trying to open devsda5. So i installed debian on a lvm on my home nas using a cheap sandisk cruzier 16gb. Bad magic number in super block after clone i wanted to experiment with lvm and debian. How to resolve bad magic number in superblock error ux. First, id like to be very clear on an important distinction. Linux ext23 filesystem stores superblock at different backup location so it is possible to get back data from corrupted partition. Fortunately, redundant copies of the superblock are stored within a file system.
Attempting to extend filesystem in rhel 7 returns bad magic. Windows and linux both see the drive and the files, but they wont open. There was a question in my post on linux partitioning with fdisk on centos 6. I posted this to the fedoralist, but thought i might get some additional information here as well. Bad magic number in superblock serveradminz blog who. Bad magic number in super block while trying to open devsdf couldnt find valid filesystem superblock. The new virtual hard drive is displayed as devvdc, i created a new partition. Bad magic number in superblock while trying to open devsdd the superblock could not be read or does not describe a valid ext2ext3ext4 filesystem. How to repaire and mount corrupted fat32 sd card youtube.
Bad magic number in super block while trying to open devsd post by emailmarketer thu mar 05, 2015 8. Its a friends drive and has 150 movies or more on it. Bad magic number in superblock after clone i wanted to experiment with lvm and debian. I have a hd that refuses to mount with a bad magic number in superblock. This is called primary superblock, because this is the superblock that is read by the system when you mount the file system. Bad magic number in super block while trying to open devsdb the superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem and not swap or ufs or something else, then the superblock is corrupt, and you might try running e2fsck with an. As block groups are counted from 0, we can say that the primary superblock is stored at the beginning of block.
Bad magic number in super block while opening filesystem dump. Checking the image for errors gives what looks like a similar error. What fsck does is, it tries to recognize the fs type. The linux e2fsck is only for checking and fixing errors in filesystem types ext2, ext3 and ext4. How to print filesystem super block information in linux a linux filesystem is made of multiple blocks out of which some of them have a special status. Repair a broken ext4 superblock in ubuntu linux expresso.
How can see information about superblock and magic number. Hence we have chances to use a backup superblock for the fsck command to save the corrupted filesystem. Bad magic number in super block while trying to open devsd post by emailmarketer. Bad magic number in super block while trying to open devhda5. It has an outdated version of ob and alom so before we install the os we. Attempting to extend filesystem in rhel 7 returns bad. The problem is that you have are trying to run the resize2fs tool on the whole logical volume, which contains a partition table, and a partition inside the volume first you must resize the partition table by running fdisk on the logical volume then you need to use kpartx to create the mapping from partition inside the volume to a device, like you already did before mounting, and then run. Extending a logical volume in a virtual machine centos. Linux ext23 filesystem stores superblock at different backup. Bad magic number in superblock while opening filesystem. Recover corrupted partition from a bad superblock nixcraft. Bad magic number in super block while trying to open devsdel devsdel. How to resolve bad magic number in superblock error page 2.
Hi, after installing a new linux box i got those errors when running a simple dump. Bad magic number in super block while trying to open devxvda1 couldnt find valid filesystem superblock. Bad magic number magic number wrong restore primary. The partition did not appear in nautilus like the other partitions. Bad magic number in super block while trying to open devsda1 the superblock could not be read or does not describe a correct ext2 filesystem. Specific reasons for a damaged super block include. What you have to do is to edit etcfstab, and check out your linux and swap partitions mounting entries, i believe you just have to change the number of devsda number. Resizing a partition in linux bad magic number in superblock error. Bad magic number in superblock while trying to open devsdb1.
The system is ubuntu, a kvm virtual machine under centos host. The drive is wd15ears filesystem ext4 not 100% sure its used in a synology ds110j nas. Well a couple of the videos do load, but only play for about 10 seconds, then they stutter and stop. On boot get error bad magic number in superblock on. The superblock could not be read or does not describe a correct e the unix and linux forums. How to recover corrupted superblock bad magic number in superblock on oracle vm repository or poolfs doc id 2127003. Bad magic number in super block while trying to open devsdb1 couldnt find valid filesystem superblock. Bad magic number in super block while trying to open devloop0 couldnt find valid filesystem superblock. The superblock could not be read or does not describe a correct ext2 filesystem. Bad magic number in superblock while trying to open devsdc1. Tecgeeks news november 28, 2017 disk, fdisk, linux. Our reader asked if it is possible to extend an existing linux non lvm partition without loosing its data here is a post on how to resize partition and filesystem with fdisk and resize2fs. We are trying to solution to help devops team linux administrator and new learner. Bad magic number in super block while trying to open devvdc1 couldnt find valid filesystem superblock.
Using the info from the first command, fdisk and the uuid number from the second command, blkid, you can work out which device has which uuid number. The solution for me was to unmount the drive, delete the partition and start all over again. Bad magic number in super block while trying to open devsdc1 couldnt find valid filesystem superblock. Partitions are simply pointers to where filesystems begin and end. Then make sure in your etcfstab file, you refer to devices using uuidxxxxxxxxxxxxxxx instead of devsdxx. As block groups are counted from 0, we can say that the primary superblock is stored at the beginning of block group 0. How to recover corrupted superblock bad magic number in. Bad magic number in super block while trying to open devsda now, thats not wonder, because you are trying to fsck the disk, and not its partition. Restoring a bad superblock system administration guide. Sep 08, 2011 bad magic number magic number wrong very often, the bad information in the primary superblock might not have been propagated to the backup superblocks. If the device is valid and it really contains an ext2 filesystem and not swap or ufs or something else, then the superblock. Bad magic number in superblock while trying to open devsda couldnt find valid filesystem superblock.
Couldnt find ext2 superblock, trying backup blocks. On boot get error bad magic number in superblock on luks. I ran, under windows, crystal disk info to see if there were any bad sectors. Bad magic number in superblock while trying to open devsdb devsdb. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. As mentioned, probably outdated, but fdisk afaik doesnt support gpt disks.
Is there a way to recover the drive data and move it to the good drive. Bad magic number in super block while trying to open devrhelroot couldnt find valid filesystem superblock. Bad magic number in superblock while trying to open devsda2 couldnt find valid filesystem superblock. Setting device label using e2label or tune2fs causes bad. I try to run fsck p devsdb on the hd and i get this the unix and linux forums. If the device is valid and it really contains an ext2ext3ext4. In order to view the magic number of a file, we need to install xxd command note that plain text files do not have the magic number. How to resolve bad magic number in superblock error.
Hello, im having some very serious issues with xfs after upgrading from a linux distro running ubuntu 2. Bad magic number in superblock while trying to open devhda1. Bad magic number in superblock while trying to open yourvolumegroup couldnt find valid filesystem superblock. The number after the b option is to specify the location of alternate copies of the super block. Expanding root partition bad magic number in superblock while.
This post describes step by step procedure to resolve bad magic number in super block error while booting up the linux operating system. When the superblock of a file system becomes damaged, you must restore it. Bad magic number in super block while trying to open devsda3 the superblock could not be read or does not describe a correct ext4 filesystem. I ran the below steps run fdisk on the right disk x is the correct letter of your disk. Bad magic number in superblock while trying to open devsda5. This post describes step by step procedure to resolve bad magic number in superblock error while booting up the linux operating system. Expanding root partition bad magic number in superblock. If you want to increase your root partition size you must follow my guide on increase root partition size lvm. I just tested a virtual machine running debian squeeze kernel 2. Bad magic number in super block while trying to open devhda8. How to print filesystem super block information in linux.
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