Recent refugee from the world of windows. After having read a few helpful pages I have been able to get my RH9 install to recognize my lexar 4 card reader. What I have done:

1. Created the script:

#!/bin/bash
echo "scsi add-single-device 0 0 0 0">/proc/scsi/scsi
echo "scsi add-single-device 0 0 0 1">/proc/scsi/scsi
echo "scsi add-single-device 0 0 0 2">/proc/scsi/scsi
echo "scsi add-single-device 0 0 0 3">/proc/scsi/scsi
cat /proc/scsi/scsi

2. Added the following lines to fstab:

/dev/sda1 /mnt/cfc vfat rw,user,noauto 0 0
/dev/sdb1 /mnt/smc vfat rw,user,noauto 0 0
/dev/sdc1 /mnt/mmc vfat rw,user,noauto 0 0
/dev/sdd1 /mnt/msc vfat rw,user,noauto 0 0

3. Added the cfc, smc, mmc, and msc files to the mount directory.

The problem(s):
1. I do not know where to put the script. I had it in root but the cd player wouldn't work on loading.
2. The different card formats seem to change their lun position (ie: the mmc device has shown up as both sdb1 and sdc1 across reboots).
3. Can I do away with the script if I recompile the kernel to probe for multiple luns? I believe the answer is yes but need to learn to recompile a kernel at this point.
4. When mounting the device after running the script post-boot I cannot write to the card. My first guess would be that this is an ownership problem but figured I would include this as this is about where I stopped trying to make this work-just building up the motivation for another salvo.

1. I would put the script in your /etc/rc.d/init.d directory and make an (early) symlink to it in /etc/rc.d/rc3.d. What I mean by early is... if you look at the links in that directory (rc3.d) you'll notice that some are SxxScript and others are KxxScript - S and K mean 'start' and 'kill'. The xx is a number that represents how soon that script is executed. So, something like S01Script would start that script before S02Script.

2. Not sure. Sorry. The only time I have had this problem is if my USB reader is not plugged in at boot (the burner and zip drive are ide-scsi, and so they can all get screwy if the machine is booted with the reader unplugged).

3. Yes. Configuring multi-lun should work fine. Currently I am running Mandy 9.1 with a non-multi-lun kernel because *my* camera uses CF which just happens to be the first lun on my device. I do have a multi-lun enabled kernel too, but it is a little buggy (my fault) so I can't be bothered to boot it, but it works well on the multi-lun front.

4. Try adding 'users' (notice the S at the end... plural) to your fstab. That way any user can mount/umount a device regardless of who originally mounted it.