Re: Card Reader

Ray Olszewski
2005-04-07T21:30:36Z

At 02:35 PM 4/7/2005 -0600, smertz wrote:
>I have a new computer I installed Linux on Red Hat Enterprise Linux ES
>release 4 (Nahant), it has one of those all-in-one card readers on it. I
>have made mountpoints as root as follows for my thumb, Compact flash and
>secure digital drive.
>
>mkdir /mnt/thumb
>mkdir /mnt/cf
>mkdir /mnt/sd
>
>
>Now when I tried to mount the Thumb (USB) drive I got an error # mount
>/dev/sda2 /mnt/thumb
>mount: /dev/sda2 already mounted or /mnt/thumb busy.
>
>
>So what have I done wrong? I'm thinking sda2 is wrong, but don't know why?
>
>df -h shows the following
>
>[root localhost mnt]# df -h
>Filesystem Size Used Avail Use% Mounted on
>/dev/mapper/VolGroup00-LogVol00
> 183G 2.9G 171G 2% /
>/dev/sda1 99M 19M 76M 20% /boot
>none 247M 0 247M 0% /dev/shm
>[root localhost mnt]#

You don't tell us anything about your hardware, so any responses really are
largely guesses. From the df output you show above, I'd infer that sda is a
physical hard disk of some type.

The card reader, then, is more likely sdb than sda, so I'd be trying sdb1
or sdb2 for the thumbdrive. Each possible device will have a different sdb*
value, and figuring oout which is which is largely guesswork ... unless
you're lucky enough to have a kernel with the sort of USB support for
hotplugging that tells you where things connect to (in my experience,
output to the console.

See what "more /proc/scsi/scsi" tells you about what the kernel *thinks* is
connected. Please include this info if you need to post a followup.