07-11-2005
In HP-UX 10.20 there is a -f flag to force the mount and it works on HFS.
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I am running mandrake 8.2 and when booting I get the message:
e2fschk: Bad magic number in super-block while trying to open /dev/hda8.
The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and really contains a valid an ext2 filesystem (and... (1 Reply)
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2. HP-UX
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I had a power outage a day ago and when the power came back on my FreeBSD 4.6 webserver had problems. It said it was unable to mount /var and made me start in single user mode and said to run fsck MANUALY. So i did and this is now what i get.
www# fsck /dev/ad0s1e
** /dev/ad0s1e
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4. Solaris
I want mount a disk. I have this error. I'm trying to correct with the superblock but i have the same error. Look my procedure.
bash-2.03# fsck -F ufs /dev/rdsk/c0t1d0s0
Alternate super block location: 9423392.
** /dev/rdsk/c0t1d0s0
BAD SUPER BLOCK: MAGIC NUMBER WRONG
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5. UNIX for Advanced & Expert Users
I need to write a script that can find a bad record (for example: there is date field colom but value provided in the file for this field is N/A) then script shoud searches this pattern and then insert the whole record into the bad file.
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File1
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I need to write a script that can find a bad record (for example: there is date field colom but value provided in the file for this field is N/A) then script shoud searches this pattern and then insert the whole record into the bad file.
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File1
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7. Filesystems, Disks and Memory
Whenever i run,
# fsck -F ufs /dev/dsk/c0t0d0s7
The following error prompt out:-
** /dev/dsk/c0t0d0s7
BAD SUPER BLOCK: MAGIC NUMBER WRONG
USE AN ALTERNATE SUPER-BLOCK TO SUPPLY NEEDED INFORMATION;
eg. fsck -o b=#
where # is the alternate super block. SEE fsck_ufs(1M).
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Why I get bad replace when using eval?
$ map0=( "0" "0000" "0")
$ i=0
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0000
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9. Filesystems, Disks and Memory
Hello all,
I have a hard drive that I can't repair.
The drive is WD15EARS - Filesystem ext4 ( not 100% sure )
It's used in a Synology DS110j NAS.
I try to run fsck -p /dev/sdb on the HD and I get this:
Bad magic number in super-block while trying to open /dev/sdb
/dev/sdb:
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Hi All,
we are having a file system error in one of our servers. The server failed to boot in usual user mode. Instead boot with single user mode and requesting to run a FSCK manually to repair the corrupted. see the below output.
Netra T2000, No Keyboard
Copyright 2008 Sun Microsystems,... (5 Replies)
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LEARN ABOUT NETBSD
badsect
BADSECT(8) BSD System Manager's Manual BADSECT(8)
NAME
badsect -- create files to contain bad sectors
SYNOPSIS
badsect bbdir sector ...
DESCRIPTION
badsect makes a file to contain a bad sector. Normally, bad sectors are made inaccessible by the standard formatter, which provides a for-
warding table for bad sectors to the driver; see bad144(8) for details. If a driver supports the bad blocking standard it is much preferable
to use that method to isolate bad blocks, since the bad block forwarding makes the pack appear perfect, and such packs can then be copied
with dd(1). The technique used by this program is also less general than bad block forwarding, as badsect can't make amends for bad blocks
in the i-list of file systems or in swap areas.
On some disks, adding a sector which is suddenly bad to the bad sector table currently requires the running of the standard DEC formatter.
Thus to deal with a newly bad block or on disks where the drivers do not support the bad-blocking standard badsect may be used to good
effect.
badsect is used on a quiet file system in the following way: First mount the file system, and change to its root directory. Make a directory
BAD there. Run badsect giving as argument the BAD directory followed by all the bad sectors you wish to add. The sector numbers must be
relative to the beginning of the file system, but this is not hard as the system reports relative sector numbers in its console error mes-
sages. Then change back to the root directory, unmount the file system and run fsck(8) on the file system. The bad sectors should show up
in two files or in the bad sector files and the free list. Have fsck(8) remove files containing the offending bad sectors, but do not have
it remove the BAD/nnnnn files. This will leave the bad sectors in only the BAD files.
badsect works by giving the specified sector numbers in a mknod(2) system call, creating an illegal file whose first block address is the
block containing bad sector and whose name is the bad sector number. When it is discovered by fsck(8) it will ask ``HOLD BAD BLOCK ?'' A
positive response will cause fsck(8) to convert the inode to a regular file containing the bad block.
DIAGNOSTICS
badsect refuses to attach a block that resides in a critical area or is out of range of the file system. A warning is issued if the block is
already in use.
SEE ALSO
bad144(8), fsck(8)
HISTORY
The badsect command appeared in 4.1BSD.
BUGS
If more than one of the sectors in a file system fragment are bad, you should specify only one of them to badsect, as the blocks in the bad
sector files actually cover all the sectors in a file system fragment.
BSD
June 5, 1993 BSD