Re: USB with SDHC card not recognized in 2.6.39 and 3.0rc4

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On Tue, 28 Jun 2011, Peter Rasmussen wrote:

> I used mkdosfs on the card in the following order, thus creating the attached 
> output files.
> I don't know if that is what you wanted, but I hope it could enlighten the case.

Did you notice this response from the "mount" program?

> root@kultorvet:/home/plr# mount /dev/sda1 /mnt/usb
> mount: wrong fs type, bad option, bad superblock on /dev/sda1,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so

Perhaps the last few lines from dmesg will indicate what's wrong.  At
first glance it appears that your 3.0-rc4 kernel configuration is
missing something.  Did you forget to build in support for VFAT
(CONFIG_VFAT_FS) or the appropriate codepage (CONFIG_NLS_ASCII and
CONFIG_NLS_CODEPAGE_437)?

> Should I make another 3.0rc4 kernel with some specific config options set? 
> Would it be helpful to see all my config options in my 3.0rc4 kernel? It is a 
> 90KB file, so I won't just attach it unless needed.

First, check the dmesg log to see if anything obvious is wrong.  
Second, compare your 3.0-rc4 with the 2.6.38 (or .39) config to see if
anything is obviously missing.

We can go on from there.

Alan Stern

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