Subject: Re: Disks not found
To: Chris Tribo <t1345@hopi.dtcc.edu>
From: Thordur Ivarsson <totii@est.is>
List: port-vax
Date: 11/02/1999 07:48:32
Chris Tribo wrote:
> 
> > jkunz@unixag-kl.fh-kl.de wrote:
> >>
> >> On 31 Oct, Brian D Chase wrote:
> >>
> >> > Some SCSI drives have a jumper to spin them up upon power-on.  I'm not
> >> > familiar with the RZ56, but you might try hunting down information on the
> >> > drives to see if they've got a similar jumper.
> >> http://theref.aquascape.com/hard_drives/layouts/hs_dec_rz5x.html
> >> says:
> >> Note: The RZ55 & RZ56 do not have a jumper for Spin-Up Option.
> >> They require a Host Adapter that automatically issues the SCSI
> >> Spin-up Command durring Boot-Up.
> >> --
> > Therefor I belive that the kernel has to issue some start command to
> > devices as it is probing the bus, RZ24 starts normally here but the
> > RZ56  does not.
> > Anders, could you look into this?
> >
> > TIA
> > Thordur
> 
>     On my VS 3100 m38 with Single SCSI/MFM controller, simply issuing "show
> dev" at the console prompt will spin up any drive connected to the SCSI bus.
> If it isn't showing up in show dev and you are sure it's getting power, it
> may be experiencing stiction, it could have a bad/poor connection between
> the drive controller and the heads/motor, or it could be dead.
> 
> Hope that helps.
> 
As I said before, the disks spin up if I issue "show dev" but they don't
when the kernel is probing the disks.

Thordur.