Re: Strange disk corruption with Linux >= 2.6.13

[Ondrej Zary <linux@rainbow-software.org>]

Grant Coady wrote:
> On Tue, 27 Sep 2005 08:10:39 -0300, Rogério Brito <rbrito@ime.usp.br> wrote:
> 
> 
>>Hi there. I'm seeing a really strange problem on my system lately and I
>>am not really sure that it has anything to do with the kernels.
> 
> 
> Probably not, I had a similar problem recently and for a test case 
> copied a .iso image file then compared it to original (cp + cmp), 
> turned out to be bad memory, and yes, memtest86 did not find the 
> problem.  Check mobo datasheet if 2+ double-sided memory allowed, 
> you may need to stay at 1GB to reduce bus loading.

I work a lot with hardware any my experience is that memtest is not very 
good at detecting errors. I have a Socket 7 board somewhere with bad L2 
cache - it was unstable but memtest was unable to find anything. 
However, GoldMemory found some errors - they disappeared after disabling 
L2 cache and crashes disappeared too. It's not free but at least 
shareware - you can find it at http://www.goldmemory.cz/ The older 
version (IIRC 5.07) was better, I had problems with some of the newer 
ones on perfectly OK hardware (when the test should start, it rebooted 
instead).

-- 
Ondrej Zary