Unable to mount MMC on my notebook[SOLVED]

kaola_linux · 2008-12-30 08:50:05

Here's the error whenever I tried to mount the partition:

 sudo mount /dev/mmcblk0 /mnt/
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

The partition cannot be seen on the gparted, that is also my problem...:(

Here is the dmesg | tail

[koala@myhost ~]$ dmesg | tail
[   18.809339] X:2636 conflicting memory types 40000000-50000000 write-combining<->uncached-minus
[   18.809360] reserve_memtype failed 0x40000000-0x50000000, track write-combining, req write-combining
[   18.818067] X:2692 freeing invalid memtype 40000000-50000000
[   19.019671] X:2636 conflicting memory types 40000000-50000000 write-combining<->uncached-minus
[   19.019688] reserve_memtype failed 0x40000000-0x50000000, track write-combining, req write-combining
[   19.027406] X:2693 freeing invalid memtype 40000000-50000000
[   20.655728] r8169: eth0: link up
[  567.366211] mmc0: Too large timeout requested!
[  567.369982] EXT2-fs error (device mmcblk0): ext2_check_descriptors: Block bitmap for group 0 not in group (block 327813867)!
[  567.370026] EXT2-fs: group descriptors corrupted!

Last edited by kaola_linux (2009-01-02 13:58:47)

MoonSwan · 2008-12-30 11:19:55

First make a mount point to mount the card to like so:

 mkdir -p /mnt/mmc

Assuming you have never formatted your card it will be in the FAT format then you need to mount it properly:

mount -t vfat /dev/mmcblk0 /mnt/mmc

I got caught with this one too and tore my hair out for an hour or so before realising the stupid thing is formatted by the factory but *only* in the old FAT16 format! Why on earth they do that I have no idea (never heard of FAT32?).

Ramses de Norre · 2008-12-30 13:11:09

You're trying to mount the mmc device instead of the partition, dmesg should show something like this when you insert the card:

mmc0: new SD card at address ff28
mmcblk0: mmc0:ff28 SD064 60928KiB 
 mmcblk0: p1

And the partition you want to mount then is /dev/mmcblk0p1, mind the partition label at the end.
So try this:

sudo mount -t vfat /dev/mmcblk0p1 /mnt

Yo might need to change the p1 to another number, look at your dmesg output.

MoonSwan · 2008-12-31 00:18:18

Ah Ramses caught me out too! Damn. He is correct so follow his advice.

kaola_linux · 2008-12-31 01:32:11

This is what happened, I had 2 partitions on this mmc one is for the arch installer which is the primary partition and the other one is ext2...

 sudo mount -t ext2 /dev/mmcblk1 /mnt/
mount: wrong fs type, bad option, bad superblock on /dev/mmcblk1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

I just want to delete these 2 partitions so that I can use only one...:(

Thanks for the reply...:)

Ramses de Norre · 2008-12-31 12:03:43

Read my post more carefully, you are trying to mount a _device_ instead of the partitions _on_ the device, which are the only mountable things. You can also run cfdisk /dev/mmcblk0 if you just want to erase the partitions (this command does take the device, indeed, not a particular partition).

Be careful with the commands I'm giving you, check dmesg output for the exact partition labels you've got.

Last edited by Ramses de Norre (2008-12-31 12:05:25)

kaola_linux · 2008-12-31 18:36:40

cfdisk can't detect my mmc...I can mount the other partion ok mainly what you've said about...The thing is it is only 300mb of my 1gb...The 700mb remaining was formatted to ext2...Now, I can't see the other partition anymore...I've tried inserting this on windows but only 1 partition shows up which is the 300mb...Using a formatting software, the mmc is undetectable...I't doesn't shows up...:(

antis · 2008-12-31 20:02:58

if you type: "cfdisk mmcblk0"
you should see all partitions that your device holds.

Just to make sure you didn't type: "cfdisk mmcblk0p1" or whatever...

kaola_linux · 2009-01-02 13:46:42

Hello guyz, I've succesfully make my MMC work again...What I did was wipe all the partitions using cfdisk; after which I then tried to format it on linux but it just can't be detected, then I put an mmc reader and plug it in to my Xp but with no success still detecting the device...What saved my life was my cellphone which uses this mmc on the first place...My cp made me formate the mmc and now I can use it on my arch...:D

kaola_linux · 2009-01-02 13:58:01

Hello guyz, I've succesfully make my MMC work again...What I did was wipe all the partitions using cfdisk; after which I then tried to format it on linux but it just can't be detected, then I put an mmc reader and plug it in to my Xp but with no success still detecting the device...What saved my life was my cellphone which uses this mmc on the first place...My cp made me formate the mmc and now I can use it on my arch...:D

Arch Linux

#1 2008-12-30 08:50:05

Unable to mount MMC on my notebook[SOLVED]

#2 2008-12-30 11:19:55

Re: Unable to mount MMC on my notebook[SOLVED]

#3 2008-12-30 13:11:09

Re: Unable to mount MMC on my notebook[SOLVED]

#4 2008-12-31 00:18:18

Re: Unable to mount MMC on my notebook[SOLVED]

#5 2008-12-31 01:32:11

Re: Unable to mount MMC on my notebook[SOLVED]

#6 2008-12-31 12:03:43

Re: Unable to mount MMC on my notebook[SOLVED]

#7 2008-12-31 18:36:40

Re: Unable to mount MMC on my notebook[SOLVED]

#8 2008-12-31 20:02:58

Re: Unable to mount MMC on my notebook[SOLVED]

#9 2009-01-02 13:46:42

Re: Unable to mount MMC on my notebook[SOLVED]

#10 2009-01-02 13:58:01

Re: Unable to mount MMC on my notebook[SOLVED]

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