[Gllug] Badblocks indicates disc is OK?...

[Chris Bell]

On Tue 10 Aug, Christian Smith wrote:
> 
> On Tue, 10 Aug 2004, John Winters wrote:
> 

> >    mke2fs -c -c /dev/hdb1
> >
> >To my surprise the whole thing ran through (albeit taking *ages*) and
> >didn't generate a single disc error.
> >
> >So, have I got a duff disc or not?
> 
> 
> Always check cabling first. Luckily, modern ATA specs include CRC based
> error detection, so bad cabling will only result in recognised data
> errors, rather than bad data actually being read/written undetected. Older
> ATA didn't even include parity error detection.
> 
> Keep some spare cables about to try, especially for transient errors.
> 

   I have had perfectly good discs "fail" but show OK under the badblocks
test, one because it was running M$ and suffered the effects of a virus, but
more often because of power lead problems, especially when a short adapter -
extension was used to syphon off some power to drive a cooling fan. Very few
PSU's are supplied with enough outlets. All worked fine after the initial
problem was sorted.

-- 
Chris Bell

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