[ale] mounting problems - cyanogenmod bn nook

[Michael H. Warfield]

On Sat, 2012-09-08 at 15:17 -0400, John Anderson wrote:
> I am trying to get cyanogenmod running on a nook color and a nook tablet.

> I am following the advice to write an image file here:

> http://forum.xda-developers.com/showthread.php?t=1000957

> I ran dd

> sudo dd if=~/Downloads/generic-sdcard.img of=/dev/disk/by-uuid/20C8-AF8A
> [sudo] password for olaf:
> 240975+0 records in
> 240975+0 records out
> 123379200 bytes (123 MB) copied, 1.71791 s, 71.8 MB/s


Bad move!

You dd'ed that image to a partition, not to the device.  That image
contains a partition table.  Do not use "by-uuid" for this purpose.  If
you do an "ls -l" on it, you'll probably find it points to something
like /dev/sdb1 and NOT /dev/sdb.  You have to dd it to the root device
like /dev/sdb or /dev/sdc.  DON'T dd it to a partition!  That's why you
are getting these errors.

Regards,
Mike

> Which appears to be successful, but now the card won't automount, if I 
> boot into windows it offers to format it, which returns it to its 
> original state. It seems that windows sees the card but doesn't 
> recognize the filesystem.
> 
> I don't know the name of the card to mount it.
> I removed and re-inserted the card and then ran dmesg. The relevant 
> lines are:
> 
> [  433.271113] mmc0: card 1234 removed
> [  438.211010] mmc0: new SDHC card at address 1234
> [  438.211256] mmcblk0: mmc0:1234 SA08G 7.28 GiB
> [  438.212844]  mmcblk0: p1
> 
> there is no mmc0 in /dev but there is:
> 
> mmcblk0p1
> 
> mmcblk0
> 
> attempting to mount:
> 
> olaf-Aspire-5750Z mnt #
> mount /dev/mmcblk0 /mnt/testflashcard
> 
>      mount: you must specify the filesystem type
> 
> olaf-Aspire-5750Z mnt #
> mount /dev/mmcblk0 /mnt/testflashcard -t ext3
> 
>      mount: wrong fs type, bad option, bad superblock on /dev/mmcblk0,
>         missing codepage or helper program, or other error
>         In some cases useful info is found in syslog - try
>         dmesg | tail  or so
> 
> 
> 
> Questions:
> Does the fact that the card won't mount after running dd mean that the 
> image file isn't working?
> Is my syntax correct?
> Why doesn't automount work after? It is the same device that was 
> automounted in the past- did the img change it somehow?
> What am I missing when I try to manually mount it? is mmcblk0 a valid 
> device?
> Has anyone had much experience with cyanogenmod? Is there an easy way to 
> dual boot instead of re-writing the nook?
> 
> Would I be better off paying -
> http://n2acards.com/
> ??
> 
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-- 
Michael H. Warfield (AI4NB) | (770) 985-6132 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
   NIC whois: MHW9          | An optimist believes we live in the best of all
 PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!
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