How do I change the order that modules are loaded?

scobapro · n00b Joined: 01 Apr 2003 Posts: 16

I'm having a crap time with getting scsi emulation working for my atapi cd burner.

From what I've read this is accomplished through the modules ide-scsi, ide-cd, and scsi support (scsi_mod and possibly sd_mod and sr_mod?) but most importantly the first two. In particular I've been told that I need to get ide-cd *above* ide-scsi in my lsmod modules list.

I accomplished this once....don't know how it was different before....and was able to use k3b and cdrecord perfectly. Since then, no matter what order I list the modules in /etc/modules.autoload ide-cd is always below ide-scsi. Am I crazy, or does the autoload script not care what order the modules are listed in?

Also, I have attempted to rmmod and insmod ide-cd so that it shows up above ide-scsi....the only problem is...cdrecord doesn't show my devices (like it's supposed to when this is working) after I do this. It seems like the only way it worked was when autoload loaded them in the correct order.

BTW the post that describes what I'm trying to do is here:
https://forums.gentoo.org/viewtopic.php?t=68321&highlight=scsi+atapi+dummies

Please help if you can!

drekka · Tux's lil' helper Joined: 06 Jul 2003 Posts: 111

Hi,
Not sure if this will help, but the current versions of XCDRoast can work with Atapi cdrom burners without the scsi emulation. If this is all your after, then just turn off all the scsi stuff in your kernels (modules) and you should be ok.

I'm currently using a LiteOn 48x24x48 and it works just fine.

cio
Derek.
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taskara · Posted: Wed Aug 06, 2003 6:02 am Post subject:

why not just compile them in directly into the kernel ?
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scobapro · n00b Joined: 01 Apr 2003 Posts: 16

NeddySeagoon · Posted: Wed Aug 06, 2003 9:39 pm Post subject:

scobapro,

You don't need ide-cd but you do need all the other modules you have listed
You also need to pass a kernel parameter in grub (or lilo).

the following is from my grub.conf
kernel (hd0,0)/boot/bzImage root=/dev/hda5 hdc=ide-scsi hdd=ide-scsi

hdc=ide-scsi stops the kernel from attaching hdc as an ide device so the scsi subsystem can get it later. ( I have a CD-RW and DVD+RW so I have two entries). Change the hdx to suit your system.

X-CD-Roast is supposed to be very poor with raw IDE because it can't use DMA yet.

Regards,

NeddySeagoon
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cyrillic · Posted: Thu Aug 07, 2003 1:51 am Post subject:

If you don't bother loading ide-cd at all, ide-scsi will attach to all your atapi devices, then everything will work fine. (you don't even need to pass anything to the kernel in your bootloader)

This is the way I setup my systems.

dma · Posted: Thu Aug 07, 2003 3:40 pm Post subject:

You might be able to hack the module dependencies. I'll have to look into this when I get back home.