irix 5.3 CD support

irix 5.3 CD support

Post by sginewbi » Mon, 21 Jun 2004 06:17:34


hi group,

i just recently bought an Indigo2 and i'm trying to see what
i can do with it. My friend gave me his HP CD-Writer 9200+
which is an external SCSI drive. I'm running an irix 5.3
box.
I believe the CD drive is few years newer than 5.3, which
would explain why my box doesn't read from it.

This is essentially my first experience with an SGI, and i'm
not all that familiar with *nix systems either. What i'd
really like is if someone could either give me some
information on how the SGI maintains its CD hardware support
(if you've got a link that would be great).

I've been scouring the internet for a couple days and it
seems like there aren't just drivers that are available, i'd
have to actually upgrade my system if i want to recognize
the newer hardware. Unfortunately, this is the only CD
drive i have for this box, so i'm caught in a catch-22.

If i knew *how* the SGI maintains the CD hardware support,
then maybe i could download just what i need to get my CD
drive working without running out a buying 6.5 right away.
(in all honesty, i'd actually like to get 6.5, but i'm not
going to get real far without a working CD drive.)

your help is greatly appreciated.
thanks,

- SGINewbie
 
 
 

irix 5.3 CD support

Post by Sheldon T. » Mon, 21 Jun 2004 09:44:30

On Sat, 19 Jun 2004 16:17:34 -0500, "sginewbie" < XXXX@XXXXX.COM >



In theory, an I2 ought to boot from any 512-byte-sector SCSI CD-ROM,
but, in practice, some work and some don't. I don't know that there's
any "hardware update" to change that, though I suppose later PROMs
would be better than earlier ones.

Later OSes are better than earlier ones, too. You might consider
obtaining a recent version of IRIX 6.5.x (where x is anything up to
22) and installing from scratch. The "inst" installer is a
pathological example of Unix at its worst, but several websites detail
how to boot and install IRIX using it. Once you have the base OS
installed, you can use the GUI and Software Manager, which is very
good.

If you can find a local SGI-head, especially one who can lend you a
known-bootable CD-ROM drive and some expertise, you should avail
yourself of his services. It will speed the process immensely, and
save your hair in the process. I'm in Seattle, if that helps.

An I2 was my first SGI, and, I expect, that of many other converts, so
you are treading a known path.

-Shel

 
 
 

irix 5.3 CD support

Post by roberso » Mon, 21 Jun 2004 09:49:59

In article < XXXX@XXXXX.COM >,

:i just recently bought an Indigo2 and i'm trying to see what
:i can do with it. My friend gave me his HP CD-Writer 9200+
:which is an external SCSI drive. I'm running an irix 5.3
:box.
:I believe the CD drive is few years newer than 5.3, which
:would explain why my box doesn't read from it.


:If i knew *how* the SGI maintains the CD hardware support,
:then maybe i could download just what i need to get my CD
:drive working without running out a buying 6.5 right away.

IRIX needs 512 byte blocks for installation
purposes, and it needs the device to identify itelf *as* a CD.
If you examine the jumpers on your 9200+ you -might- be able to find
jumpers to force 512 byte blocks, but you are not likely to find
jumpers to force it to identify itself as a CD.


CD support at the level you need is either built into the prom itself
or is built into a program named 'sash' that acts as an intermediate
boot loader. There is effectively no way you are going to be able to
do what you want to do. You could probably trick the drive into using
512 byte sectors, but you probably can't trick the drive into claiming
it's just a CD and not a CD writer.

Getting IRIX 6.5 probably would not help you. Indigo^2's sash should
automatically send out the command for 512 byte sectors, even in the version
you have, but IRIX 6.5 doesn't want to boot from writers either as far
as I can recall.


I could give you technical details about how IRIX supports CDROMs, but
I'm not going to do so, because your problem is *before* IRIX gets control.

And if you -are- okay with the idea of the CD writer being usable only
after boot and not for installs, then we could give you the
information about which exact files are involved -- but you don't
have the resources to take advantage of that information. [If you had
the resources to take advantage of the information, you wouldn't have
to ask -- you'd have already figured it out yourself.]
--
Would you buy a used bit from this man??
 
 
 

irix 5.3 CD support

Post by sginewbi » Mon, 28 Jun 2004 14:23:08


From what I'm reading here it sounds like I might be able to
get the CD-RW
drive running eventually, but I definitely won't be able to
use it to install 6.5 from 5.3.
That's ok. I'd prefer to know that now than to waste a lot
of precious time to
come to the same conclusion.

Thanks to everyone for the advice. Sorry about the long
delay on the reply.
I just don't get enough time for these things these days.

One more question before I go -- does anyone know where i
can acquire SGI
software on tape? I've got a working DAT drive as well as
one of the big Q150
drives.

Thanks all,

- SGINewbie