SPARCClassic won't boot cdrom

[Sean Caron]

Oh! And if you're using the "boot cdrom" mnemonic, make sure that your
CD-ROM is actually set to SCSI ID 6, otherwise you need to substitute in
your boot path i.e.

/iommu/sbus/espdma at 4,8400000/esp at 4,8800000/sd@{scsiid},0

Definitely check that!

Best,

Sean


On Sun, Aug 2, 2015 at 2:53 PM, Michael Thompson <
michael.99.thompson at gmail.com> wrote:

> > From: Benjamin Huntsman <BHuntsman at mail2.cu-portland.edu>
> > Subject: SPARCClassic won't boot cdrom
> >
> > Hi all!
> >    I recently acquired a SPARCclassic, which is my first bit of Sun
> > hardware.  Having an awful time getting it to boot from the CD-ROM.  I
> have
> > tried a bunch of different terminators and several different cables, but
> > whenever I try to boot I get this:
> >
> > ok boot cdrom -s
> > Boot device: /iommu/sbus/espdma at 4,8400000/esp at 4,8800000/sd at 6,0:d  File
> > and args: -s
> > The SCSI bus is hung.  Perhaps an external device is turned off.
> >
> >    Any ideas as to what might be wrong here?  The thing does not seem to
> > send any commands to the CD-ROM, as the LED never comes on and I don't
> hear
> > it doing anything...
> >
> > Thanks!
> >
> > -Ben
> >
>
> The terminator on the end of the SCSI bus needs to be powered. Without
> power on the terminator the bus will hang. Sometimes the power comes from
> the SPARC through the SCSI cable, but not all SCSI cables pass the power.
> Sometimes there is a jumper or switch on the last drive to enable SCSI
> terminator power.
>
> --
> Michael Thompson
>