[Arm-netbook] SD card issue

Ben Dooks ben at fluff.org
Mon Mar 29 11:27:23 BST 2010

On Mon, Mar 29, 2010 at 02:19:35AM +0100, Frans Pop wrote:
> There's something really weird with the recognition of the NAND and 
> external SD card in the kernel.
> If no external SD card is inserted, then the NAND is not recognized...

IIRC, it isn't really a NAND chip, it is a board-mounted SD style device,
and it may be that the system is sharing the card-detect lines.
> I tried booting an installed system without external SD card inserted today 
> and the system ended up just sitting there with "Waiting for root 
> device /dev/mmcblk0p2...".
> After I inserted the external SD card, the NAND was suddenly recognized, 
> but *not* the external card: /dev/ only shows mmcblk0.
> This helps explain why the system goes into shock when the external card is 
> ejected. It looks as if the identification is crossed somewhere even 
> though the device allocation ends up correctly.
> If I boot with external SD card inserted, then both are recognized and 
> available.
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Q:      What's a light-year?
A:      One-third less calories than a regular year.

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