mouting an SD-card-reader to Linux and acces it

**sinichi_kudo17** · 03-21-2005

Hi,

i've got a multi-card reader and would like to mount it to my linux box

Code:

&#91;root@localhost arief&#93;# dmesg | tail
 &#91;<0217a272>&#93; vfs_readdir+0x8a/0xb7
 &#91;<0217a6e3>&#93; sys_getdents64+0x64/0xa9
 &#91;<0218a560>&#93; set_fs_pwd+0x37/0x5a
 Bad EIP value.
 <6>usb 1-2&#58; new high speed USB device using address 8
scsi4 &#58; SCSI emulation for USB Mass Storage devices
  Vendor&#58; USB2.0    Model&#58; CardReader CF     Rev&#58; 0100
  Type&#58;   Direct-Access                      ANSI SCSI revision&#58; 02
Attached scsi removable disk sdc at scsi4, channel 0, id 0, lun 0
USB Mass Storage device found at 8

Code:

&#91;root@localhost arief&#93;# mount -t vfat /dev/sdc /mnt/flash/
mount&#58; No medium found

Code:

&#91;root@localhost arief&#93;# /sbin/lsmod | grep usb
usblp                  12993  0
usb_storage            61321  2
scsi_mod              118417  2 sd_mod,usb_storage

is it because of the wrong file system ?
SD card brand is SanDisk

**dylunio** · 03-21-2005

Have you tried this with media in the drive?

dylunio

**sinichi_kudo17** · 03-25-2005

Fuu .. what a long reply from me ...

Hmm, yeah i have an SD card in it. My card reader has 4 ports where u could put several cards on it. When i plug it in, /dev saying that there is only /dev/sdc.

The question is what is the card's filesystem ? ... usually

?.

If there are, say, more than one card is inserted, then i suppose there would be /dev/sdc1,2,3 and so on, No ?

**puntmuts** · 03-26-2005

After inserting the card, there should be a message in the dmesg output. You can read those with the command dmesg.

Code:

#dmesg
&#91;...&#93;
SCSI device sda&#58; 31360 512-byte hdwr sectors &#40;16 MB&#41;
sda&#58; assuming Write Enabled
sda&#58; assuming drive cache&#58; write through
SCSI device sda&#58; 31360 512-byte hdwr sectors &#40;16 MB&#41;
sda&#58; assuming Write Enabled
sda&#58; assuming drive cache&#58; write through
 sda&#58; sda1

So the card is recognized as /dev/sda1 . I can mount /dev/sda1 now.

**sinichi_kudo17** · 03-27-2005

That's the thing. it should, but /dev/sda1 doesn't exist
the output of dmesg btw is

Code:

Initializing USB Mass Storage driver...
scsi0 &#58; SCSI emulation for USB Mass Storage devices
  Vendor&#58; USB2.0    Model&#58; CardReader CF     Rev&#58; 0100
  Type&#58;   Direct-Access                      ANSI SCSI revision&#58; 02
USB Mass Storage device found at 3
usbcore&#58; registered new driver usb-storage
USB Mass Storage support registered.
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
usb 1-3&#58; USB disconnect, address 3
usb 1-3&#58; new high speed USB device using address 4
scsi1 &#58; SCSI emulation for USB Mass Storage devices
  Vendor&#58; USB2.0    Model&#58; CardReader CF     Rev&#58; 0100
  Type&#58;   Direct-Access                      ANSI SCSI revision&#58; 02
Attached scsi removable disk sda at scsi1, channel 0, id 0, lun 0
USB Mass Storage device found at 4

i have inserted the card ( SD card ) and hoping /dev/sda1 would pop up ... but it didn't. Any idea ?

**AlexK** · 03-27-2005

Try inserting the card before system boots and then following the other's instructions.

**sinichi_kudo17** · 04-01-2005

Hmm ... unfortunately, /dev/sda1 doesn't pop up even after i plug the reader before boot. What do you think ?

**AlexK** · 04-01-2005

/dev/sda1 should be created when it detects the media in this case a SD card. So, have both the card reader and the SD card plugged in before the system boots.

**sinichi_kudo17** · 04-02-2005

Maybe i didn't make myself clear ... I should've written the reader+the card inserted before boot time and /dev/sda1 still doesn't pop up.

Hmmm, ?

**spoke** · 04-08-2005

It works :
I plug the usb drive and next the SDCard (I have a green led) in the SanDisk
12 in 1.

Next, in root
#mount /dev/sdc1 /media/usbdisk

type is automatically recognized as vfat.

dmesg gave :
usb 1-1: new full speed USB device using uhci_hcd and address 2
SCSI subsystem initialized
Initializing USB Mass Storage driver...
scsi0 : SCSI emulation for USB Mass Storage devices
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
Vendor: Generic Model: STORAGE DEVICE Rev: 0001
Type: Direct-Access ANSI SCSI revision: 00
Vendor: Generic Model: STORAGE DEVICE Rev: 0001
Type: Direct-Access ANSI SCSI revision: 00
Vendor: Generic Model: STORAGE DEVICE Rev: 0001
Type: Direct-Access ANSI SCSI revision: 00
Vendor: Generic Model: STORAGE DEVICE Rev: 0001
Type: Direct-Access ANSI SCSI revision: 00
usb-storage: device scan complete
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi removable disk sdb at scsi0, channel 0, id 0, lun 1
Attached scsi removable disk sdc at scsi0, channel 0, id 0, lun 2
Attached scsi removable disk sdd at scsi0, channel 0, id 0, lun 3
SCSI device sdc: 121856 512-byte hdwr sectors (62 MB)
sdc: Write Protect is off
sdc: Mode Sense: 02 00 00 00
sdc: assuming drive cache: write through
SCSI device sdc: 121856 512-byte hdwr sectors (62 MB)
sdc: Write Protect is off
sdc: Mode Sense: 02 00 00 00
sdc: assuming drive cache: write through
sdc: sdc1

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mouting an SD-card-reader to Linux and acces it

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