Yep, not recognising the card at all. If the card works okay elsewhere then it's almost certainly a hardware problem.

i tried everything here but still my n900 refuses to see my sd card. i even tried editing the omap like the instruction i found AT http://discussions.nokia.com/t5/Maem...602757/page/2#

hi all,

I recently have a same problem that my N900 refuses to recognize the memory card. it doesn't show the memory card in File Manager as it used to be.

I ran the command and had the result like this:

~ $ dmesg | grep -i 'mmc0:'
[ 11.494567] mmc0: cover is closed, card is now accessible
~ $

Well, i am confused. How could that be "accessible" while the phone could not see the card?

Slash

Please try if the hardware is later in the boot still visibleIf the kernel is able to recognize the card at all, there should be some useful output provided by these commands.

It does not seem to see the external card, does it? I am confused with the following result. I am sorry for the long text:

/home/user # sfdisk -l -uM

Disk /dev/mmcblk0: 977024 cylinders, 4 heads, 16 sectors/track Units = mebibytes of 1048576 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End MiB #blocks Id System
/dev/mmcblk0p1 0+ 27652- 27652 28315648 c W95 FAT32 (LBA)
/dev/mmcblk0p2 27652+ 29700- 2048 2097152 83 Linux
/dev/mmcblk0p3 29700+ 30468- 768 786432 82 Linux swap / Solaris
/dev/mmcblk0p4 0 - 0 0 0 Empty

/home/user # lshal | grep volume
block.is_volume = false (bool)
udi = '/org/freedesktop/Hal/devices/volume_part3_size_805306368'
block.is_volume = true (bool)
info.capabilities = {'volume', 'block'} (string list)
info.category = 'volume' (string)
info.udi = '/org/freedesktop/Hal/devices/volume_part3_size_805306368' (string)
volume.block_size = 512 (0x200) (int)
volume.fstype = 'swap' (string)
volume.fsusage = 'other' (string)
volume.fsversion = '2' (string)
volume.is_disc = false (bool)
volume.is_mounted = false (bool)
volume.is_mounted_read_only = false (bool)
volume.is_partition = true (bool)
volume.label = '' (string)
volume.linux.is_device_mapper = false (bool)
volume.mount_point = '' (string)
volume.num_blocks = 1572864 (0x180000) (uint64)
volume.partition.flags = {} (string list)
volume.partition.label = '' (string)
volume.partition.media_size = 32015122432 (0x774400000) (uint64)
volume.partition.number = 3 (0x3) (int)
volume.partition.scheme = 'mbr' (string)
volume.partition.start = 31142739968 (0x740408000) (uint64)
volume.partition.type = '0x82' (string)
volume.partition.uuid = '' (string)
volume.size = 805306368 (0x30000000) (uint64)
volume.uuid = '' (string)
udi = '/org/freedesktop/Hal/devices/volume_uuid_95f19452_06bb_4430_98c6_01beeb529723'
block.is_volume = true (bool)
info.capabilities = {'volume', 'block'} (string list)
info.category = 'volume' (string)
info.udi = '/org/freedesktop/Hal/devices/volume_uuid_95f19452_06bb_4430_98c6_01beeb529723' (string)
volume.block_size = 512 (0x200) (int)
volume.fstype = 'ext3' (string)
volume.fsusage = 'filesystem' (string)
volume.fsversion = '1.0' (string)
volume.ignore = false (bool)
volume.is_disc = false (bool)
volume.is_mounted = true (bool)
volume.is_mounted_read_only = false (bool)
volume.is_partition = true (bool)
volume.label = '' (string)
volume.linux.is_device_mapper = false (bool)
volume.mount.valid_options = {'ro', 'sync', 'dirsync', 'noatime', 'nodiratime', 'noexec', 'quiet', 'remount', 'exec', 'acl', 'user_xattr', 'data='} (string list)
volume.mount_point = '/home' (string)
volume.num_blocks = 4194304 (0x400000) (uint64)
volume.partition.flags = {} (string list)
volume.partition.label = '' (string)
volume.partition.media_size = 32015122432 (0x774400000) (uint64)
volume.partition.number = 2 (0x2) (int)
volume.partition.scheme = 'mbr' (string)
volume.partition.start = 28995256320 (0x6c0408000) (uint64)
volume.partition.type = '0x83' (string)
volume.partition.uuid = '' (string)
volume.size = 2147483648 (0x80000000) (uint64)
volume.unmount.valid_options = {'lazy'} (string list)
volume.uuid = '95f19452-06bb-4430-98c6-01beeb529723' (string) udi = '/org/freedesktop/Hal/devices/volume_uuid_5088_C45D'
block.is_volume = true (bool)
info.capabilities = {'volume', 'block'} (string list)
info.category = 'volume' (string)
info.udi = '/org/freedesktop/Hal/devices/volume_uuid_5088_C45D' (string)
volume.block_size = 512 (0x200) (int)
volume.fstype = 'vfat' (string)
volume.fsusage = 'filesystem' (string)
volume.fsversion = 'FAT32' (string)
volume.ignore = false (bool)
volume.is_disc = false (bool)
volume.is_mounted = true (bool)
volume.is_mounted_read_only = false (bool)
volume.is_partition = true (bool)
volume.label = '' (string)
volume.linux.is_device_mapper = false (bool)
volume.mount.valid_options = {'ro', 'sync', 'dirsync', 'noatime', 'nodiratime', 'noexec', 'quiet', 'remount', 'exec', 'utf8', 'shortname=', 'codepage=', 'iocharset=', 'umask=', 'dmask=', 'fmask=', 'uid=', 'flush'} (string list)
volume.mount_point = '/home/user/MyDocs' (string)
volume.num_blocks = 56631296 (0x3602000) (uint64)
volume.partition.flags = {} (string list)
volume.partition.label = '' (string)
volume.partition.media_size = 32015122432 (0x774400000) (uint64)
volume.partition.number = 1 (0x1) (int)
volume.partition.scheme = 'mbr' (string)
volume.partition.start = 32768 (0x8000) (uint64)
volume.partition.type = '0x0c' (string)
volume.partition.uuid = '' (string)
volume.size = 28995223552 (0x6c0400000) (uint64)
volume.unmount.valid_options = {'lazy'} (string list)
volume.uuid = '5088-C45D' (string)
/home/user #

Sorry to say, no traces of an external card to find in the output. Both commands only find the internal card.

If the magnet is still there, it could be a contact issue between card and reader, though i only read about contact problems only for the SIM card up to now.
May be some hardware savvy member could shed more light on this.

Thank you michaaa62,

Actually, It hadn't recognized the Memory Card once because of the magnet. After that, It worked when I inserted the other magnet into the back cover.

But all of the certain, it did it again. Don't have any clue.

I don't think it's the hardware. To be honest, I am keen to do the factory reset but I am a little confused of how to do it right and I don't have much time at the minute for reinstalling and configuring all the software again as the phone is running great for now.

thanks dude

SlashN900