To check what happen when we insert an USB memory key type this command from a telnet session:
# tail -f /var/log/messages
In this way it will be possible to see the Kernel messages to see if all is running correctly. The messages that should appear are as follows:
kernel: drivers/usb/host/hc_crisv10.c: USB controller in host mode. kernel: drivers/usb/host/hc_crisv10.c: USB controller started. kernel: drivers/usb/host/hc_crisv10.c: USB controller in host mode. kernel: drivers/usb/host/hc_crisv10.c: USB controller started. kernel: drivers/usb/host/hc_crisv10.c: USB controller running. kernel: usb 1-2: new full speed USB device using ETRAX 100LX and address 2 kernel: scsi0 : SCSI emulation for USB Mass Storage devices kernel: Vendor: USB Mass Model: Storage Drive 2 Rev: 002 kernel: Type: Direct-Access ANSI SCSI revision: 02 kernel: SCSI device sda: 503808 512-byte hdwr sectors (258 MB) kernel: sda: Write Protect is off kernel: sda: assuming drive cache: write through kernel: SCSI device sda: 503808 512-byte hdwr sectors (258 MB) kernel: sda: Write Protect is off kernel: sda: assuming drive cache: write through kernel: sda: sda1 kernel: Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
From those messages you can see that the USB memory key has been correctly identified and assigned to the device /dev/sda.
To be able to have access the memory file system you have to mount the partition /dev/sda1 on the /mnt/1 folder typing:
# mount -t vfat /dev/sda1 /mnt/1
Now you can have access to the USB memory key file system starting from the /mnt/1 folder:
# cd /mnt/1 # ls ...
To see how many memory space is available on the USB memory key type:
# df Filesystem 1k-blocks Used Available Use% Mounted on /dev/flash3 5032 5032 0 100% / /dev/flash2 640 240 400 38% /mnt/flash tmpfs 6984 72 6912 1% /var /dev/sda1 253156 0 253156 0% /mnt/1In this case a 256MB memory key has been used.
To remove a memory key, exit from the key file systems and unmount it typing:
# cd / # umount /mnt/1
# df Filesystem 1k-blocks Used Available Use% Mounted on /dev/flash3 5032 5032 0 100% / /dev/flash2 640 240 400 38% /mnt/flash tmpfs 6984 72 6912 1% /var
# cd /etc/init.d/boottime # echo "mount -t vfat /dev/sda1 /mnt/1" > usbmount.sh # cat usbmount.sh mount -t vfat /dev/sda1 /mnt/1 # chmod +x usbmount.shInsert the memory key and reboot.
Unfortunately the fstab method doesn't work because at the startup it is managed before the the USB devices acknoledge.