Subject: Re: USB CD writer attaching incorrectly
To: Bruce Martin <>
From: None <>
List: current-users
Date: 10/30/2003 09:15:09
On Thu, Oct 30, 2003 at 10:11:03AM +0200, Bruce Martin wrote:
> We have, for a while, used various Plextor USB CD writers happily under NetBSD. We have a particular model that is not working
> properly, and I think it is because it is attaching to the system all wrong. Normally a USB writer attaches to the kernel space as
> follows:
>     /netbsd: umass0: Plextor Corp. USB Storage Adapter, rev 2.00/3.01, addr 2
>     /netbsd: umass0: using SCSI over BBB-P
>     /netbsd: scsibus0 at umass0: 2 targets, 1 luns per target
>     /netbsd: cd0 at scsibus0 target 1 lun 0: <PLEXTOR, CD-R   PX-S88T, 1.06> SCSI0 5/cdrom removable
> With this particular drive it tries to attach as follows:
>     /netbsd: umass0: Plextor Corp. USB Storage Adapter, rev 2.00/11.01, addr 2
>     /netbsd: umass0: using SFF8020i over BBB-P
>     /netbsd: atapibus0 at umass0 channel 0
>     /netbsd: cd0 at atapibus0 drive 0: <PLEXTOR, CD-R   PX-S2410T, 1.01> type 5 cdrom removable
> Three differences:
>     the first prints out 'rev 2.00/3.01' while the bottom prints out 'rev 2.00/11.01'
>     the first uses SCSI over BBB-P, the second tries SFF8020i over BBB-P (???)
>     the first attaches to scsibus0, the second tries atapibus0
> And the first works, the second doesn't!

What do you mean by that? The lines you pasted don't show any errors.

> Does anyone have an idea why it would try use some funny interface, when in all other writers' cases (of the same make but different
> model) it uses SCSI?

Because Plextor changed the chip they used for other models, that's all.
Whether it is stupid or not doesn't make it an error.

Quentin Garnier.