Still problems with Maxtor disk 8-((

Still problems with Maxtor disk 8-((

Post by Enrico Badel » Sat, 21 Mar 1992 02:56:10



Thanks to all who have answered to my SOS!

The problem is still here haunting my poor machine.

Many suggested a conflict in SCSI addresess; I think this isn't the
issue because probe-scsi reports this stuff:

        Target 0
          Unit 0 Disk Maxtor P0-12S JB-22
        Target 1
          Unit 0 Disk Quantum P105SS ....... GENERIC
        Target 3
          Unit 0 Disk Quantum P105SS ....... GENERIC
        Target 4
          Unit 0 Removable Tape Archive Viper 150
        Target 6
          Unit 0 Removable Read Only Device Sony CD-ROM

I also managed to install SunOS on the Maxtor disk (I physically removed
sd0 and sd1). After putting them back I could boot from the Maxtor
and mount the two Quantums, use the tape and CD-ROM at the same time.
But this wasn't what I had in mind to do, also rarely and randomly
I'd get the same error but no panic and everything continued to work.
        sd0a: Error for command 'read'
        sd0a: Error Level: FATAL
        sd0a: Block 7440, Absolute Block: 7440 <-- this value changes
        sd0a: Sense Key: Hardware Error
        sd0a:Vendor 'QUANTUM' error code 0x90

I still can't believe it's a conflict in the SCSI addresses because the
following message is generated while booting /vmunix so the hw addressing
should be correct.
        swap on sd0b fstype spec size 20580K
        dump on sd0b fstype spec size 20588K  <-- Why a different value?
        sd0a: Error for command 'read'
        sd0a: Error Level: FATAL
        sd0a: Block 7440, Absolute Block: 7440
        sd0a: Sense Key: Hardware Error
        sd0a:Vendor 'QUANTUM' error code 0x90
        Can't invoke  /sbin/init error 5
        Can't invoke /single/init error2
        Can't invoke /etc/init error2
        Can't invoke /bin/init error2
        Can't invoke /usr/etc/init error2
        Can't invoke /usr/bin/init error2
        panic: icode

Another strange thing I just notice is that the light of the
tape is always on even when no tape is inserted. In my old Sun 3
the light goes on only when there is a tape.

Adrian S. Le Hanne suggests to put the CD-ROM as the last device
of the SCSI chain; before going out and buying a new SCSI cable
I'd like to know why?
Quoting from Roddy McColl 'I understand that the CD-ROM should NOT be
at the end of the chain'.
My opinion is/was that a device should be position independent.

Raj Manandhar suggested the cables are too long.

    +++++++     +++++++++   ++++++++++    ++++++++++++++
    + Sun +     + CDROM +   + AD732C +    + Terminator +
    +++++++     +++++++++   ++++++++++    ++++++++++++++
       |           | |         |  |           |
       +-----------+ +---------+  +-----------+
             A            B            C

        cable A is 28" from Sun
        cable B is 56" from Andataco
        cable C is 0" Terminator from Andataco on AD732C

I haven't tried other configurations because of lack of cables.

Jon Alperin says that CD-ROMS for RS/6000 are single ended devices,
what about Sun's? I got no specific answer from Sun in Italy!

Thanks again.

--


Via Camburzano 9                        Phone:    +39-11-746092
10143 Torino, ITALY                     Fax:      +39-11-746487

 
 
 

1. MAXTOR, MAXTOR, MAXTOR...

I've read lots of post in previous issues of the digest, regarding Maxtor
problems.  Now I have a similar problem.  I have not seen any solution posted.
First the HD timeout problem.  Then a mysterious file corruption problem.
The HD timeout problem I can just ignore, I might be able to fix it if I
change the controller bus speed.  

The file corruption problem is the one I'm pretty pissed about.  It happened
when I was trying to rebuild my kernel.  I untarred the new kernel source
into the kernel directory but when I do a "make dep" it says there is an
error in one of the Makefile.  When I look at the Makefile, it was a "C"
program source from FPU-emu directory.  So I restore the Makefile and try to
do it again, then it complain about some include file missing from
"chr_drv/sound" directory.  After a while I gave up.

Before I call MAXTOR, I would like to know if there is any other way I
can fix the problem.  Right now I only have 1 harddisk a Maxtor 7245A.
I have not looked at what PROM version on the drive.  This drive is hooked
to a Local bus IDE controller.

I partition the drive as such:

/dev/hda1:              DOS             ???
/dev/hda2:              efs             ???

Thanks for the help.

Bustamam Harun


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