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To: gentoo-user@g.o
From: Willie Wong <wwong@...>
Subject: Re: USB, udev, and SCSI emulation
Date: Thu, 2 Mar 2006 14:25:21 -0500
On Thu, Mar 02, 2006 at 10:44:10AM -0800, Penguin Lover Wes Gray squawked:
> I've been researching getting my camera to work and I have a few questions.
> I'm running udev and kernel 2.6.15.1.
> 
> 1) For USB mass storage to work do I still need SCSI emulation or does udev
> 	remove that requirement?

no. (deliberately ambiguous here to a either/or question)

> 
> 2) If so do I still need to pass the kernel parameter hdc=ide-scsi?

no. that's only for scsi emulation of IDE devices, like DVD/CDR drives
for example. And to my knowledge it is no longer used nowadays as
cdrecord et al started supporting ATAPI...

> 
> 3) Should SCSI emulation be automatic with udev, or might I need to write
> 	a rule for it?

first.
> 
> 4) If SCSI emulation is working will I alway see a line in dmesg about a
> 	new SCSI device?  Most howto's seem to suggest this but I want to
> 	be sure.

generally, no. You should see a line (or many lines, actually), 
after plugging in your camera, about a mass storage device found. 

> 
> 5) Any other things I ought to be looking at?
> 

http://gentoo-wiki.com/HOWTO_USB_Mass_Storage_Device

W
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References:
USB, udev, and SCSI emulation
-- Wes Gray
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