[CentOS] SD Card Reader not being recognized

[Craig White]

On Tue, 2005-08-02 at 19:40 +0900, Dave Gutteridge wrote:
> >Well, could try building the latest FC3 or FC4 kernel under CentOS.
> >
> Hmm... I'm wary of that since there were so many other issues with 
> Fedora that I encountered which motivated me to come to CentOS in the 
> first place.
> 
> >Can also try (as root):
> ># tail -f /var/log/messages
> >then insert card.  (Ctrl-C to exit - otherwise runs "forever".)
> >  
> >
> Nothing happens if I run the command and then insert a card.
> However, if I remove the card reader from the USB Port and put it back 
> in, I get this:
> 
> Aug  2 19:34:51 localhost kernel: usb 1-1.1: new full speed USB device 
> using address 9
> Aug  2 19:34:51 localhost kernel: scsi2 : SCSI emulation for USB Mass 
> Storage devices
> Aug  2 19:35:03 localhost kernel:   Vendor: BUFFALO   Model: CF CARD 
> Reader    Rev: 3.06
> Aug  2 19:35:03 localhost kernel:   Type:   
> Direct-Access                      ANSI SCSI revision: 02
> Aug  2 19:35:03 localhost kernel: Attached scsi removable disk sdb at 
> scsi2, channel 0, id 0, lun 0
> Aug  2 19:35:04 localhost scsi.agent[4367]: disk at 
> /devices/pci0000:00/0000:00:1f.2/usb1/1-1/1-1.1/1-1.1:1.0/host2/target2:0:0/2:0:0:0
> Aug  2 19:35:06 localhost kernel: Device not ready.  Make sure there is 
> a disc in the drive.
> 
> Judging by that last line, it might seem as though something is wrong 
> with the card. So I tested other cards, and also verified that the cards 
> could be read by both Windows and my Palm Pilot. The cards definitely 
> have data on them. It's CentOS that can not read them.
> 
> >If something shows up in the output, try
> >
> ># fdisk -l
> >  
> >
> Here is the output from that:
> 
> [root at localhost dave]# fdisk -l
> Disk /dev/hda: 30.0 GB, 30020272128 bytes
> 255 heads, 63 sectors/track, 3649 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>    Device Boot      Start         End      Blocks   Id  System
> /dev/hda1   *           1        3649    29310561    7  HPFS/NTFS
> Disk /dev/hdb: 30.7 GB, 30738677760 bytes
> 255 heads, 63 sectors/track, 3737 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>    Device Boot      Start         End      Blocks   Id  System
> /dev/hdb1   *           1        3644    29270398+  83  Linux
> /dev/hdb2            3645        3737      747022+   f  W95 Ext'd (LBA)
> Disk /dev/sda: 40.0 GB, 40007761920 bytes
> 255 heads, 63 sectors/track, 4864 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1               1        4864    39070048+   c  W95 FAT32 (LBA)
----
unless /dev/sda1 was something else, it appears that this was your card
and thus when you pushed it in, then pulled it out - it then saw
that /dev/sda was already in use so the second time, it tried to assign
it /dev/sdb where it failed.

You might simply want to reboot...

mkdir /home/sdcard
# insert the card/card reader
mount /dev/sda1 /home/sdcard
ls -l /home/sdcard

and I would guess that you would see something there.

of course this is as root and if you got that far, you could then create
the entry to /etc/fstab to allow mounting (or automount) as a user.

Craig