[Testing] 11.2.0 build 23 available for testing

[John Watlington]

I would be surprised if you see systematic failure of XO-1's
so early in their lifetime.  The NAND Flash used on XO-1s
is rated at 100K write cycles, unlike the 5K write cycles
(or worse) of the NAND Flash used in SD cards.
We've always seen occasional early-mortality failures, but
no pattern has emerged.

Cheers,
wad

On Jun 18, 2011, at 5:54 PM, forster at ozonline.com.au wrote:

>> Either this NAND is close to complete failure, or else the bad block  
>> table has become corrupted.
>> 
>> You could try recreating the bad block table as follows:
>> 
>> ok select /nandflash  scrub!  unselect
> 
> Thanks
> I suspect a bad block table. They all went in the one event as far as  
> I can tell. Since then it does not always turn on first time when I  
> press power on. Diagnostics run OK except for nand bad blocks.
> 
> But I don't think we want to reset the bad block table till we have  
> understood the problem. It is apparently one of a number of XO's that  
> wont boot on the new image. If bad blocks are a problem for the new  
> image, they are increasingly going to be a problem for the ageing  
> fleet of XO-1's
> 
> Will try the block table after the new image issue is settled, so  
> thanks for that info.
> 
> Tony
> 
> 
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