[maemo-developers] Firmware 4.2007.26-8 has inferior SDHC performance than 3.2007.10-7 - why?

From: Marius Gedminas marius at pov.lt
Date: Tue Jul 10 00:11:09 EEST 2007
On Mon, Jul 09, 2007 at 07:32:09PM +0100, Neil MacLeod wrote:
> Kees Jongenburger wrote:
> > I guess the cards would not be lost , just the data.
> > 
> Hopefully! But so far nobody has found any software that can recover
> the cards.
> > Apparently it's not a bug that can easily be triggers by everybody.
> > I have my rootfs running on sdhc with new "latest" release and I
> > already filled it with 300MB of programs so far with no problems.
> > 
> One poor guy has had three Transcend SDHC Class 6 cards die on him
> since upgrading to 4.2007!
> It seems the external slot is more likely to kill a card than the
> internal slot... perhaps because people remove cards from this slot
> more often than they do the internal slot? Also, judging by the vdd
> details in this blog[1] post the internal and external slots support
> slightly different electrical characteristics.

I had a 256 MB SD card die completely while it was plugged into the
external slot.  FWIW, I never removed it, just kept it sitting in the
external slot when suddenly one day noticed that some of the songs in
media player aren't available any more.  A USB card reader wouldn't
read it either (IIRC dd on /dev/sda would return a read error).

It was not an SDHC card.  Coincidence?  Do these cards just up and die
like this, or could it be the tablet's fault?  It's the first time this
happened to me.

Marius Gedminas
Westheimer's Discovery:
        A couple of months in the laboratory can
        frequently save a couple of hours in the library.
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