adaptec 39320 - ahd0: Invalid Sequencer interrupt occurred

Jung-uk Kim jkim at
Tue Aug 9 00:08:47 GMT 2005

On Monday 08 August 2005 06:50 pm, Sam Lawrance wrote:
> I see the ahd0 message below on just about every boot of a dell
> sc1425 running 6.0-BETA2, just after "waiting for scsi devices to
> settle". Once the system is up I don't see it again.
> Is it harmful?  Can I help?  The machine has a serial cable
> attached so it can be peeked and poked if need be.

ahd(4) is known to have issues with certain Seagate model/firmware.  
In fact, there were numerous reports like yours:

There was a work-around posted here:

Some people had luck, some not.  Since you have ICH5, you have to 
modify the source to match ICH5, not ICH3.

Ultimately you should ask Dell whether they have newer firmware for 
the drives.

Jung-uk Kim

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