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 >