atapi problems getting weirder and weirder

Søren Schmidt sos at
Wed Jun 2 00:59:43 PDT 2004

Conrad Sabatier wrote:
> I had posted recently about a problem I was having with a CD-RW drive on
> acd1 (ata1-slave).  It does appear that this particular piece of hardware
> has seen better days and is in need of replacement.
> However, after my latest upgrade (FreeBSD 5.2-CURRENT #1: Mon May 31
> 22:52:53 CDT 2004), things have gotten considerably stranger re: both of my
> ATAPI devices:
> # atacontrol list
> ATA channel 0:
>     Master:  ad0 <Maxtor 94091U8/FA520S60> ATA/ATAPI revision 5
>     Slave:   ad1 <WDC WD800BB-32BSA0/12.08C12> ATA/ATAPI revision 5
> ATA channel 1:
>     Master:      no device present
>     Slave:  acd0 <R/RW 4x4x24/C12a> ATA/ATAPI revision 0
> The ata1-master device (a COMPAQ DVD-ROM), which was working just fine
> before, is now no longer being found at boot time, nor by using any
> subsequent atacontrol commands, and as you can see, the broken slave device
> is now being attached as acd0.  Bizarre!
> I've rebooted/powered down, twiddled with the BIOS, enabled/disabled ACPI,
> rebuilt the kernel with and without APIC, ATA_STATIC_ID, all to no avail. 
> This is just crazy!
> I'm quite sure there's nothing wrong with the master device.  It was
> working fine until this upgrade.  I'm completely at a loss as to what's
> going on or how to proceed.
> Any input will be much appreciated.

What happens if you remove the faulty device ?


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