* http://electronics.stackexchange.com/questions/60156/best-linux-filesystem-to-use-on-mmc-memory-chip


==== SD Card : Flash ====

  * http://www.transcendusa.com/Products/ModDetail.asp?ModNo=87&LangNo=0
 
  transcend : 150X Secure Digital Card	| 	TS2GSD150	| 	2GB


  mmc0: new SD card at address b368
  mmcblk0: mmc0:b368 SMI-S 2031104KiB
  mmcblk0: unknown partition table

  sudo time dd if=/dev/zero of=/dev/mmcblk1

  dd: writing to `/dev/mmcblk0': Input/output error
  1245961+0 records in
  1245960+0 records out
  637931520 bytes (638 MB) copied, 305.017 s, 2.1 MB/s


  lost page write due to I/O error on mmcblk0
  __ratelimit: 4130 callbacks suppressed

  fdisk /dev/mmcblk0p1
  mkfs.vfat -F 16 -n mmc2gb /dev/mmcblk0p1


  [ 3753.793901] mmc0: card lacks mandatory switch function, performance might suffer.
  [ 3753.795294] mmc0: new SD card at address b368
  [ 3753.797821] mmcblk1: mmc0:b368 SMI-S 2031104KiB
  [ 3753.798758]  mmcblk1: unknown partition table



  Logical sector size (3582 bytes) is not a multiple of the physical sector size.


==== micro sd ====

  * http://www.pc-look.com/boutik/Prod_Kingston_USB-microSD-Reader-Card-Lecteur-de-carte-(-microSD,-microSDHC-)-flash-:-microSD-2-Go-Hi-Speed-USB__15282_fr.html 

== Adapter : SanDisk Micromate ==

  lsusb
  # Bus 005 Device 002: ID 0781:a7a8 SanDisk Corp.

  sudo apt-get install sg3-utils
  sg_scan -i

  dmesg

  usb 5-8: new high speed USB device using ehci_hcd and address 2
  usb 5-8: configuration #1 chosen from 1 choice
  scsi4 : SCSI emulation for USB Mass Storage devices
  usb-storage: device found at 2
  usb-storage: waiting for device to settle before scanning
  Vendor: SanDisk   Model: SDDR-113          Rev: 1.00
  Type:   Direct-Access                      ANSI SCSI revision: 00
  SCSI device sdb: 4019200 512-byte hdwr sectors (2058 MB)
  sdb: Write Protect is on
  sdb: Mode Sense: 03 00 80 00
  sdb: assuming drive cache: write through
  SCSI device sdb: 4019200 512-byte hdwr sectors (2058 MB)
  sdb: Write Protect is on
  sdb: Mode Sense: 03 00 80 00
  sdb: assuming drive cache: write through
   sdb: sdb1
  sd 4:0:0:0: Attached scsi removable disk sdb
  usb-storage: device scan complete
 
== Recover ==

  DEST=${TMPDIR}/tmp/dump.img
  ddrescue -r1 /dev/sdb1 $DEST $DEST.txt

  mount -o loop  $DEST /mnt/loop
  mount: you must specify the filesystem type

  mount -o loop  $DEST /mnt/loop -t vfat
  mount: wrong fs type, bad option, bad superblock on /dev/loop0,

  dmesg
  FAT: bogus number of reserved sectors
  VFS: Can't find a valid FAT filesystem on dev loop0.

How to guess a [[FAT]] partition ?

  testdisk $DEST

Did not find anything

Anway recovering files is possible :

  photorec $DEST

  Disk /dev/sdb1 - 2055 MB / 1960 MiB (RO)
     Partition                  Start        End    Size in sectors
     D empty                    0   0  1  1011  63 62    4015616 [Whole disk]


  * http://www.cs.sfu.ca/~ggbaker/personal/cf-linux
  * http://www.cgsecurity.org
  * http://en.wikipedia.org/wiki/PhotoRec


===== MISC =====

  * http://www.slideshare.net/champ_yen/linux-sdmmc-driver-stack


===== MORE =====

@TaG: [[sd]] [[memory]] [[card]] [[fm]] RaM RoM