If your system will give you a terminal type the following command, else boot linux system from rescue disk boot from 1st cddvd. Testdisk is included in parted magic, and theres a great guide on their site. If the device is valid and it really contains an ext4. For this though, we just need the partition number, such as devsda3 or devhdb1.
Linux ext23 filesystem stores superblock at different backup location so it is possible to get back data from corrupted partition. Bad magic number in superblock while trying to open devsdb2 the superblock could not be read or does not describe a valid ext2ext3ext4 filesystem. 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 superblock on oracle vm repository or poolfs doc id 2127003. 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. I try to run fsck p devsdb on the hd and i get this the unix and linux forums. As for the command debugfs r stat devsda1 failing when trying to fetch the info from inode 335676. It has an outdated version of ob and alom so before we install the os we. Always getting bad magic number in superblock i recommended and i am installing ubuntu 10. Resizing a partition in linux bad magic number in superblock error. Repair a broken ext4 superblock in ubuntu andrews garage.
Bad magic number in superblock couldnt find valid filesystem superblock. Bad magic number in superblock while trying to open devsda5. We appreciate your interest in having red hat content localized to your language. Bad magic number in the superblock while trying to open devhda1 fsck. Bad magic number in superblock while trying to open devsdel devsdel. 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.
Bad magic number in superblock while trying to open devhda1. First, id like to be very clear on an important distinction. Bad magic number in superblock serveradminz blog who. Restoring a bad superblock system administration guide. Bad magic number in superblock while trying to open yourvolumegroup couldnt find valid filesystem superblock. Bad magic number in superblock while trying to open devsdb1,2,3,4. Bad magic number in superblock you cannot e2fsck an entire drive devsdd, so of course you got bad or missing superblock. Create new primary partition, set type as linux lvm. Create a new primary volume and extend the volume group to the new volume. Bad magic number in super block while trying to open. Bad magic number in superblock while trying to open devhda8. Bad magic number in superblock while trying to open devrhelroot couldnt find valid filesystem superblock. The superblock could not be read or does not describe a valid ext2ext3ext4 filesystem. Other than that, ufs is not a very often used filesystem in linux it is.
Tecgeeks news november 28, 2017 disk, fdisk, linux. Bad magic number in superblock while trying to open. 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. Bad magic number in superblock while trying to open devsdb since i am sure thanks to gparted that i am dealing with an ntfs file system, and not ext09 i think that the proposed solution running ef2fsck is not applicable to me. Enter your email address to subscribe to this blog and receive notifications of new posts by email. With command sudo e2label devsdd name i get the message. 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 alternate. Linux ext23 filesystem stores superblock at different backup. Bad magic number in superblock while trying to open devsda6 couldnt find valid filesystem superblock.
How to resolve bad magic number in superblock error. Hi, after installing a new linux box i got those errors when running a simple dump. I have tried to format a 2,5 inch ide hd that stems from a satellite receiver. On some linux distributions, it is available as a package named ufsutils.
Sometimes fsck in disks ends up in an error bad magic number in superblock while trying to open devsdb. Repair a broken ext4 superblock in ubuntu linux expresso. The primary copy of superblock is stored in the very first block group. Here, you can change ext4 to ext3, or ext2 to suit the filesystem. How can i recover a bad superblock from a corrupted ext3. File system type size status information about other metadata structures in detail the superblock is a structure that represents a file syste. The system is ubuntu, a kvm virtual machine under centos host.
As block groups are counted from 0, we can say that the primary superblock is. Then make sure in your etcfstab file, you refer to devices using uuidxxxxxxxxxxxxxxx instead of devsdxx. Bad magic number in superblock while opening filesystem dump. Bad magic number in superblock while trying to open devvdc1 couldnt find valid filesystem superblock. Bad magic number in superblock while trying to open devsda3 the superblock could not be read or does not describe a correct ext4 filesystem.
Oracle vm repository or poolfs get super block corruption, and fsck. I have tried parted magic, but it wont allow to make a new partition. The superblock could not be read or does not describe a correct ext2 filesystem. 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. I believe if certain memory segments can be avoided to. Bad magic number in superblock while trying to open devsda5 the superblock could not be read or does not describe a correct ext4 filesystem.
When i run the dumpe2fs command, it told me the superblock had been destroyed. Bad magic number in superblock external hdd ask ubuntu. Cannot mount xfs filesystem getting invalid superblock. Bad magic number in superblock while trying to open devsdb1 couldnt find valid filesystem superblock. Bad magic number in superblock while trying to open devsdb1 and e2fsck reports a similar error. Bad magic number in superblock while trying to open devsdc2 couldnt find valid filesystem superblock. Try e2fsck for partitions on it, like devsdd1, etc. Perform file system check using e2fsck just fire command e2fsck b and answer with y in case system asks.
Recover corrupted partition from a bad superblock nixcraft. Bad magic number in superblock while trying to open devmappervg00lv00 couldnt find valid filesystem superblock. How to resolve bad magic number in superblock error ux. If the device is valid and it really contains an ext2ext3ext4. Bad magic number in superblock while trying to open devsdb the superblock could not be read or does not describe a correct ext2 filesystem. And i have to add a new xfs file system on a new virtual hard drive. Cant repair super block, bad magic number unix and linux forums. Linux ext2ext3 superblock recovery kezhongs weblog. The 2829 reallocated sectors are already bad enough that the enough reallocated sectors to declare this disk as failed limit has already been crossed, and the current pending sector count value indicates that the number of reallocated sectors is likely to increase by 65533 as soon as those failed blocks are either overwritten by the computer. Bad magic number in superblock while trying to open devsdb1. Bad magic number in superblock while trying to open devsdb devsdb. Bad magic number in superblock while trying to open devsdb2 the superblock could not be read or does not describe a correct ext2 filesystem.
Caution if a file system with a damaged superblock was created with newfs or mkfs customized parameters, such as ntrack or nsect, using fscks automatically calculated superblock for the repair process could irreparably damage your file system. Solved always getting bad magic number in superblock. Bad magic number in superblock while trying to open devsdb3. The superblock could not be read or does not describe a correct ext4. Bad magic number in the superblock while trying to open devhdb5 devhdb5. Bad magic number in superblock while trying to open devsdf the superblock could not be read or does not describe a correct ext2 filesystem. I am new to linux, and pop os has been making the move very easy. Now, make sure your superblock is the problem, by starting a filesystem check, replacing xxx with your partition name. Repair a broken sd card superblock on a raspberrypi. If the device is valid and it really contains an ext4 filesystem and not swap or ufs or something else, then the superblock is corrupt, and you might try running e2fsck with an alternate.
In short each file system has a superblock, which contains information about file system such as. Partitions are simply pointers to where filesystems begin and end. How to recover corrupted superblock bad magic number in. In the case of a file system that was created with customized parameters and it has a bad superblock, fsck provides the following prompt to cancel. The superblock could not be read or does not describe a. To recover a lost partition, your going to need testdisk. Bad magic number in superblock while trying to open devsdb1 the superblock could not be read or does not describe a correct ext2 filesystem. This is called primary superblock, because this is the superblock that is read by the system when you mount the file system. Recovering accidentally formatted ext4 partition fixing.
1075 297 873 1155 313 664 522 144 389 639 1104 1338 362 25 927 365 255 1447 1245 660 513 1265 1282 566 877 555 690 655 1394 335 775 691 471 55 532 737 896 427 893 1210 137 1042 334 1012 493 624 1178 1130 179 1400