Hi Henry,

Thanks, that explains it. It appears that my CD-Rom is unable to read
the 512 byte hardware sectors. I'll dig up a disk somewhere and try
putting the image on there.

Louis


Henry Bent wrote:
> On Mon, 5 Nov 2007, Louis Wevers wrote:
>
>   
>> Hi,
>>
>> Perhaps a bit stupid question, but I can't seem to figure it out. I try
>> to boot my 5000/240 from a freshly created CD (created from the ISO
>> image available from the NetBSD site).
>>
>> I tried something like: "boot 3/rz0" and "boot 3/rz0/netbsd"
>>
>> Unfortunately it only comes back to me with something like: "?IO: 3/rz0
>>        (cmd: rd)"
>>
>> When I boot the installed 1.6 on the machine, I can read the CD
>> properly. file structure looks normal etc.
>>
>> Any ideas on how to boot the machine from CD?
>>
>> Many thanks in advance,
>> Louis
>>
>>     
>
> Hi Louis,
>
> You need a CD-ROM drive that can do 512 byte hardware sectors if you want
> to boot from it.  There's a list of them at
> http://home.comcast.net/~safeharborbay/c128/scsi/suncds.html but I have
> no affiliation with that site and can't guarantee anything.  I personally
> have used RRD42s and various Toshiba models in the past.
>
> If that fails and you have an extra SCSI hard drive, you can just dd a CD
> image to the hard drive and boot off of that.  I've done it a few times
> and neither Ultrix nor NetBSD seem to mind that you're not using a real
> CD-ROM.
>
> --
> Henry Bent
> hbent@cs.oberlin.edu
>
>
>