[kwlug-disc] Hard disk smartctl errors

[Chris Craig]

I've used TestDisk in the past for recovering data from faulty drives.
It's probably a lot like gddrescue, but different. If the hardware is
ok (doubtful with I/O errors) then they say they can repair software
issues.
http://www.cgsecurity.org/wiki/TestDisk

On 15 October 2014 20:51, Khalid Baheyeldin <kb at 2bits.com> wrote:
> /dev/sdb2 is the problem partition.
> Yes, it is the 3rd partition, but not the last one.
>
> # fdisk /dev/sdb
>
> Command (m for help): p
>
> Disk /dev/sdb: 500.1 GB, 500107862016 bytes
> 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disk identifier: 0x8baa29fc
>
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1   *        2048      409599      203776    7  HPFS/NTFS/exFAT
> /dev/sdb2          409600   926949375   463269888    7  HPFS/NTFS/exFAT
> /dev/sdb3       926949376   976560127    24805376    7  HPFS/NTFS/exFAT
> /dev/sdb4       976560128   976771119      105496    c  W95 FAT32 (LBA)
>
> When I try to mount the partition, this is what I get:
>
> # mount /dev/sdb2 /mnt/tmp/
> ntfs_attr_pread_i: ntfs_pread failed: Input/output error
> Failed to read hiberfil.sys: Input/output error
> Failed to mount '/dev/sdb2': Input/output error
> NTFS is either inconsistent, or there is a hardware fault, or it's a
> SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows
> then reboot into Windows twice. The usage of the /f parameter is very
> important! If the device is a SoftRAID/FakeRAID then first activate it
> and mount a different device under the /dev/mapper/ directory, (e.g.
> /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation
> for more details.
>
> Looking at gddrescue examples, they all assume another disk with a
> spare partition to recover to.
>
> Not sure if that is the only way. Man pages are very basic. Checking
> the info documents ...
>
> On Wed, Oct 15, 2014 at 8:38 PM, Paul Nijjar <paul_nijjar at yahoo.ca> wrote:
>>
>> The first two partitions are mostly read partitions. The third one is
>> written to more frequently.
>>
>> If the drive detects okay and mounts two partitions then I would use
>> gddrescue to get as much data off as possible, and then photorec to
>> try and get some files out (assuming that you need data, and if you
>> don't then I presume this thread is just for fun).
>>
>> I use the instructions here:
>>
>> http://www.forensicswiki.org/wiki/Ddrescue
>>
>> I have retrieved data from several bad drives (including clicky
>> drives) using this tool.
>>
>> - Paul
>>
>> On Wed, Oct 15, 2014 at 12:00:08PM -0400, Khalid Baheyeldin wrote:
>>> Reviving an old thread ...
>>>
>>> So, now I have another disk that is giving errors. It is an 2.5"
>>> internal disk from a laptop of a family member.
>>>
>>> It has 3 NTFS partitions, one with the HP stuff on it, another which
>>> is also a sort of system partition, and then a third which is the main
>>> Windows partition.
>>>
>>> Even after freezing it, the 2 former partitions mount OK with no
>>> errors. The 3rd (with the data on it) does not mount under ntfs-3g on
>>> Linux and gives a lot of media errors.
>>>
>>> Why would one partition have the errors? Are partitions aligned with
>>> cylinders? Or because it is the largest (400+GB out of a 500GB disk)
>>> it has more chance of having errors due to size?
>>>
>>> Any other ideas?
>>>
>>
>> --
>> Need election information? Big list of resources here:
>> http://www.waterlooregionconnected.com/showthread.php?tid=149
>>
>>
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>
>
>
> --
> Khalid M. Baheyeldin
> 2bits.com, Inc.
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