[Coco] Back to my COCO's again

[Bill Gunshannon]

On 12/11/18 8:09 PM, Bill Gunshannon wrote:
> On 12/11/18 5:56 PM, Gene Heskett wrote:
>> On Tuesday 11 December 2018 13:17:52 Bill Gunshannon wrote:
>>
>>> On 12/11/18 11:34 AM, Gene Heskett wrote:
>>> That, combined with a lot of fiddling around and I am up to the next
>>>
>>> stage.  :-)
>>>
>>>
>>> I have a system built for my SDC that includes the TC3 devices.
>>>
>>> However, whenever I try to access a SCSI disk I get UNIT ERROR.
>>>
>>> Other bits of data.  If I have the disk turned off I get NOT READY.
>>>
>>> That makes sense.
>>>
>>> No matter which SCSI device I type (s0, s1, s2 etc) I see a flash
>>>
>>> of the disk activity light before I get the UNIT ERROR message
>>>
>>> Drive is set for Unit 0.
>>>
>> Mmm not 100% sure I've encountered that exact behaviour, so do you have
>> a /dd? And is its LSN0 properly prepared? Both for the size of the
>> drive, the offset where the os9 partition ends and the basic vdisks
>> begin? And where on the drive the os9 file you want to use to finish the
>> boot, actually starts, and its length. See the rbf.defs for which bytes
>> in LSN0 are what, its all in there.
>
> I think there is confusion.  I have a bootable SDC image that includes
>
> SCSI devices.  I need this to prep the SCSI disk I plan to install NitrOS9
>
> on.  It will be one large partition with only NitrOS9 on it.  I have no
>
> need for basic vdisks.  But I have not even gotten that far.  I am
>
> trying to do a "format /s0" and get the UNIT ERROR message.  And
>
> any other command that attempts to access the SCSI gets the same.
>
> But, as I said earlier, I do see the light on the SCSI disk blink which
>
> means NitrOS9 is seeing the SCSI Controller and attempting to pass
>
> a command thru to the disk.
>
>
> bill


OK, one more data point.  I just did the same thing with a

SuperIDE and a pair of Fuji Disks.  I am almost done formating

the first one.  So, what I did works.  All I have to figure out now

is why the same thing does not work with SCSI.  Going to try

a different set of disk drives.  Still willing to accept any help

or advice anyone can offer.


bill