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SCO OS 5.0.x and LSI logic 1030 problems - SCO

Hi. A customer of ours reported a problem when installing SCO OS 5.0.x (he tried with 5.0.5, 5.0.6 and 5.0.7) on an IBM Eseries 225 mod. 8647-5ax equipped with a LSI Logic 1030 SCSI controller and a 73GB SCSI HD. He got the drivers for the LSI from both IBM and LSI itself but the problem is that the OS actually "sees" the controller and the disk, but the size reported is approx 4GB instead of the 73GB. I'm trying to have the output of hwconfig as to check the CHS values reported by the controller but I'm wondering if ...

  1. #1

    Default SCO OS 5.0.x and LSI logic 1030 problems

    Hi.

    A customer of ours reported a problem when installing SCO OS 5.0.x (he
    tried with 5.0.5, 5.0.6 and 5.0.7) on an IBM Eseries 225 mod. 8647-5ax
    equipped with a LSI Logic 1030 SCSI controller and a 73GB SCSI HD.

    He got the drivers for the LSI from both IBM and LSI itself but the
    problem is that the OS actually "sees" the controller and the disk, but
    the size reported is approx 4GB instead of the 73GB.

    I'm trying to have the output of hwconfig as to check the CHS values
    reported by the controller but I'm wondering if biosgeom (which should
    be able to interact with the kernel concerning the disk geometry stored
    into the BIOS) is able to work with SCSI devices as well.

    Thanks,
    Roberto
    --
    ---------------------------------------------------------------------
    Roberto Zini email : r.zini<AT>strhold.it
    Technical Support Manager -- Strhold Evolution Division R.E. (ITALY)
    ---------------------------------------------------------------------
    "Has anybody around here seen an aircraft carrier?"
    (Pete "Maverick" Mitchell - Top Gun)

    Roberto Zini Guest

  2. #2

    Default Re: SCO OS 5.0.x and LSI logic 1030 problems

    Roberto Zini wrote:
    > A customer of ours reported a problem when installing SCO OS 5.0.x (he
    > tried with 5.0.5, 5.0.6 and 5.0.7) on an IBM Eseries 225 mod. 8647-5ax
    > equipped with a LSI Logic 1030 SCSI controller and a 73GB SCSI HD.
    >
    > He got the drivers for the LSI from both IBM and LSI itself but the
    > problem is that the OS actually "sees" the controller and the disk, but
    > the size reported is approx 4GB instead of the 73GB.
    >
    > I'm trying to have the output of hwconfig as to check the CHS values
    > reported by the controller but I'm wondering if biosgeom (which should
    > be able to interact with the kernel concerning the disk geometry stored
    > into the BIOS) is able to work with SCSI devices as well.
    LSI recently reported this same problem to us and together we worked out
    a fix. As you suspect, it is geometry related. The "lsil" driver was
    always reporting a geometry of 64 heads, 32 sectors/track. Dividing
    73GB by those numbers results in about 70000 cylinders. Since cylinders
    are stored in an unsigned short, this wraps around to some small number
    like 4GB.

    The "lsil" version number that includes this fix is: 1.03.27. It may
    actually be issued with a higher version number (if any other changes
    were pending). They are supposed to be reissuing the driver with this
    fix in it. We are also in the process of testing it and will issue our
    own build of it some time soon (but I don't know exactly when).

    I'm not sure whether you can use "biosgeom" to force the issue. You
    might as well try it. Boot the CD with:

    Boot
    : defbootstr link=lsil biosgeom=(8800,255,63)

    Watch the "%disk" message -- is it using your override geometry or still
    64x32?
    >Bela<
    Bela Lubkin Guest

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