[SPARCbook] SPARCbook - Solaris 2.5 CDRom

[Ken Hansen]

No, the bector size is a function of the CD-ROM drive, not the CD-ROM
itself.

The 512 byte sectors can not be "imposed" on the CD-ROM.

Sorry,

Ken
----- Original Message -----
From: <Oscar.G.Farah at census.gov>
To: <sparcbook at sunhelp.org>
Sent: Tuesday, November 14, 2000 1:58 PM
Subject: [SPARCbook] SPARCbook - Solaris 2.5 CDRom


>
>
>
> If I boot the SB fron the disk, I can then access the CD and read all the
> files on it.
>
> Does this mean that after the machine boots, it discovers that the CD is a
> 2048 bytes/sector CD and adjusts itself to read it.
>
> If this is so, I should be able to copy the files off the CD and burn
> another CD with 512 bytes/sector!
>
> Oscar Farah
>
>
>
>
>
>
>
> Oscar,
>
> No, the line ending in "sd6" simply indicates your 3XP tried to read the
> drive,
> not that anything in the drive was actually read.
>
> I had this same problem: a 3XP, the 2.5.1/D.0 OS, the Plextor drive.
> Identical. I
> simply removed the jumper as Ken said, problem immediately solved. The
> jumper
> forces the drive to 512-block mode, removing it places it in 2048-block
> mode.
>
> Fair warning: if this is an identical situation then your cd is in an
> external
> stack. Taking the multi-layer stack apart wasn't too difficult (patience
> is a
> virtue here), but be *very careful* when you remove the CD (you must
> remove the
> CD) and the wires attached at the back. *write down their order*. I made
> the
> (silly, childish, impatient) mistake of not doing so, and I spent hours
> afterwards
> trying to find the correct combination again.
>
> -Keith Howick
>
> Oscar.G.Farah at census.gov wrote:
>
> > Ken,
> >
> > Thanks for the quick reply. Let me ask this:  Was the data " SunOS
> Release 5.5
> > ... (sd6):" obtained by reading the CD? If yes, does
> > this imply that the beginning of the CD has 512 byte blocks and the rest
> > of it has 2048??
> >
> > Oscar Farah
> >
> > Your plextor drive should have a jumper on the back, for something like
> > sector size. You need to change that jumper from whatever it currently
> is
> > to
> > boot the off the drive.
> >
> > It may be known as boot block, sector size, unix boot, or something else
> -
> > it is *not* TERM, Parity, or test, these are the other jumpers that
> should
> > be available...
> >
> > You can try and look up a manual at the Plextor site, or you can look up
> > the
> > SUN CD_ROM FAQ off of sunhelp.org.
> >
> > HTH,
> >
> > Ken
> >
> > ----- Original Message -----
> > From: <Oscar.G.Farah at census.gov>
> > To: <sparcbook at sunhelp.org>
> > Sent: Thursday, November 09, 2000 6:47 AM
> > Subject: [SPARCbook] (no subject)
> >
> > > 1. I purchased a copy of: "Solaris 2.5 for Sparcbook 3 Version D.0"
> from
> > > Tadpole to install on my 3XP.
> > >
> > > 2. Using the "probe-scsi"command, I got the following response for the
> > > cdrom:
> > >
> > > Target 6
> > > Removable Read Only Device      Plextor CD-ROM PX-4XCS 1.011005/94
> 18:00
> > >
> > > 3.  When I gave the command "boot cdrom",  I got the following
> response:
> > >
> > > SunOS Release 5.5 Version D.O [UNIX (R) System V Release 4.0]
> > > Copyright (c) 1983-1995, Sun Microsystems, Inc.
> > > Copyright (c) 1992-1996, Tadpole Technology PLC.
> > > WARNING: /iommu at 0, 10000000/sbus at 0, 10001000/espdma at 4, 8400000/esp at 4,
> > > 8800000/sd at 6,0 (sd6):
> > >
> > > 4. Then after a while:
> > >
> > >        Rd capacity block size (512) disagrees with sector size (2048)
> > >
> > > 5.  And was not able to go further.
> > >
> > > I have no experience with Tadpole ...  Can any one tell me what I am
> > doing
> > > wrong and what I can do to install the operating system.
> > >
> > > PS.  the internal hard drive is target 3, the floppy target 5 and the
> > > CDROM is new - undamaged.  the 3XP has 64 MB ram and 1 GB drive.
> > >
> > > Oscar Farah
> > >
> >
> > _______________________________________________
> > Sparcbook mailing list  -  Sparcbook at sunhelp.org
> > http://www.sunhelp.org/mailman/listinfo/sparcbook
>
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