I want to know if I have badblocks on my sdb5 HDD.

[Frederic Schaer]

Steven Vollom a écrit :
> Frederic Schaer wrote:
>   
>> Hi,
>>
>> I'm coming after the battle, but if smart reports there are bad blocks
>> (using the previous given smartctl -a /dev/sdXX command), given the
>> price of hard drives and given the price of your own data integrity
>> (your data has no price, does it ?), I would directly go buy a new disk...
>>
>>
>>     
>>> NO!  Bad blocks are BAD.  You map them out because they can NEVER be trusted.
>>>   
>>>     
>>>       
>>   
>>     
> Dear Derek,
>
> I feel like a friend with all at the 'List' now, so I will embarrass 
> myself a bit.  I am a  retired fine-artist that never made a lot of 
> money.  (It is obvious that 'fine' doesn't mean the quality of my work, 
> for I have not earned much from the task; it just means that art is what 
> I do for a living.)  Consequently, when I had to retire and live on my 
> Social Security, (I could never save for old age.) it was an amount that 
> most people pay in tips each month.  So I am just too poor to solve a 
> problem by purchasing something, unless I am absolutely sure the 
> something is really broken.  Knowing that, is not an easy thing, when 
> you are as inhibited intellectually as I am.  But even if the 'List' got 
> frustrated enough to boot me off, I will not stop trying to learn this 
> stuff.  I will still be struggling to learn this system, when I am 
> looking up at the roots of grass, with a 'Here Lies' marker at my head.  
> I will not give up.  I am not a quitter.
>
>   
Hi,

I'm sorry, I did not really mean that the easiest thing to do was buy a
new disk : what I meant was that if badblock or smart starts telling you
there are several bad blocks (lots of ?), you should really think about
buying a new disk because yours is failing, and you will soon loose data :'(
I've not seen a drive loosing sectors (blocks) without dying shortly
after that

I haven't seen the results of previous commands you were asked to run,
so could you please try this :

sudo apt-get install smartmontools
sudo smartctl -a /dev/sdb

Hopefully this will give you lots of output. If it does, please post the
lines that look like this :

5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail 
Always       -       0
...
197 Current_Pending_Sector  0x0012   100   100   000    Old_age  
Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age  
Offline      -       0

And be aware that if the last number (0 for me) is not 0 , your drive
already knows about bad blocks and tried to or reallocated some already.
If that number is high (more than ... I don't know : 100 ?), you're
really going to be in trouble.

If the above command (smartctl) doesn't give you any output... errhhh...
you might try badblocks on the drive.
Be warned however : keep backups of your data (just in case...) !!

sudo badblocks -n /dev/sdb

This is going to be veeeeerrryyyyyy slow though.

Regards