Thread: Missing superblock?

ok! haven't touched partitions on drive, seems have become messed up. drive still appears work fine, booting multiple operating systems , other os's have lost ability read drive in question.

ubuntu still reads drive fine, oddities appear when try inspect partitions.

first: in ubuntu's build in disk utility shows partition being 2tb ext4 partition, says "partitioning: not partitioned" checking filesystem comes clean.

second: in gparted has asterisk partition, when pull "information" says "couldn't find valid superblock" & "no such file or directory while trying open /dev/sda1"

while doing more investigating, sure enough /dev/sda1 doesn't exist, partition in disk utility says /dev/sda (no partition number)... seems odd me

have attached screenshot see.

following terminal output might helpful.

code:

**user**@**computername**:~$ sudo mke2fs -n /dev/sda  mke2fs 1.41.14 (22-dec-2010)  /dev/sda entire device, not 1 partition!  proceed anyway? (y,n) y  filesystem label=  os type: linux  block size=4096 (log=2)  fragment size=4096 (log=2)  stride=0 blocks, stripe width=0 blocks  122101760 inodes, 488378646 blocks  24418932 blocks (5.00%) reserved super user  first data block=0  maximum filesystem blocks=4294967296  14905 block groups  32768 blocks per group, 32768 fragments per group  8192 inodes per group  superblock backups stored on blocks:   	32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,   	4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,   	102400000, 214990848    **user**@**computername**:~$ sudo mke2fs -n /dev/sda1  mke2fs 1.41.14 (22-dec-2010)  not stat /dev/sda1 --- no such file or directory    device apparently not exist; did specify correctly?  **user**@**computername**:~$ sudo dumpe2fs /dev/sda | grep -i superblock  dumpe2fs 1.41.14 (22-dec-2010)    primary superblock @ 0, group descriptors @ 1-117    backup superblock @ 32768, group descriptors @ 32769-32885    backup superblock @ 98304, group descriptors @ 98305-98421    backup superblock @ 163840, group descriptors @ 163841-163957    backup superblock @ 229376, group descriptors @ 229377-229493    backup superblock @ 294912, group descriptors @ 294913-295029    backup superblock @ 819200, group descriptors @ 819201-819317    backup superblock @ 884736, group descriptors @ 884737-884853    backup superblock @ 1605632, group descriptors @ 1605633-1605749    backup superblock @ 2654208, group descriptors @ 2654209-2654325    backup superblock @ 4096000, group descriptors @ 4096001-4096117    backup superblock @ 7962624, group descriptors @ 7962625-7962741    backup superblock @ 11239424, group descriptors @ 11239425-11239541    backup superblock @ 20480000, group descriptors @ 20480001-20480117    backup superblock @ 23887872, group descriptors @ 23887873-23887989    backup superblock @ 71663616, group descriptors @ 71663617-71663733    backup superblock @ 78675968, group descriptors @ 78675969-78676085    backup superblock @ 102400000, group descriptors @ 102400001-102400117    backup superblock @ 214990848, group descriptors @ 214990849-214990965  **user**@**computername**:~$ sudo dumpe2fs /dev/sda1 | grep -i superblock  dumpe2fs 1.41.14 (22-dec-2010)  dumpe2fs: no such file or directory while trying open /dev/sda1  couldn't find valid filesystem superblock.  **user**@**computername**:~$

looking way of correcting issue, without data loss. oddly enough work right now, worst case scenario have go buy 2tb drive, copy off... avoid

attached images

• partition.jpg (55.2 kb, 1 views)

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