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Booting with a AHA-2940U2W - Linux Setup, Configuration & Administration

chuck wrote:  Linux will call the first SCSI disk detected "sda" regardless of its target ID. You need to check what its target is. "cat /proc/scsi/scsi" will tell you, e.g.: Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: IBM Model: DDYS-T09170N Rev: S96H Type: Direct-Access ANSI SCSI revision: 03 Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: IBM Model: DDRS-39130D Rev: DC1B Type: Direct-Access ANSI SCSI revision: 02 Host: scsi0 Channel: 00 Id: 05 Lun: 00 Vendor: HP Model: C5110A Rev: 3701 Type: Processor ANSI SCSI revision: 02 Host: scsi0 Channel: 00 Id: 06 Lun: 00 ...

  1. #1

    Default Re: Booting with a AHA-2940U2W

    chuck wrote: 

    Linux will call the first SCSI disk detected "sda" regardless of its
    target ID. You need to check what its target is. "cat /proc/scsi/scsi"
    will tell you, e.g.:

    Attached devices:
    Host: scsi0 Channel: 00 Id: 00 Lun: 00
    Vendor: IBM Model: DDYS-T09170N Rev: S96H
    Type: Direct-Access ANSI SCSI revision: 03
    Host: scsi0 Channel: 00 Id: 01 Lun: 00
    Vendor: IBM Model: DDRS-39130D Rev: DC1B
    Type: Direct-Access ANSI SCSI revision: 02
    Host: scsi0 Channel: 00 Id: 05 Lun: 00
    Vendor: HP Model: C5110A Rev: 3701
    Type: Processor ANSI SCSI revision: 02
    Host: scsi0 Channel: 00 Id: 06 Lun: 00
    Vendor: SONY Model: CD-RW CRX145S Rev: 1.0b
    Type: CD-ROM ANSI SCSI revision: 04

    So I have disks on targets (Id: above) 0 and 1, so my sda is target 0.

    A LUN of anything other than 0 is unusual with low-end equipment (it's
    used for big disk arrays and the like).

    You'll also have to set the SCSI BIOS to boot from the correct device
    (hit ctrl-A when prompted during boot) and the PC BIOS to boot from SCSI
    (assuming this is a PC).

    Regards, Ian

    Ian Guest

  2. #2

    Default Booting with a AHA-2940U2W


    The docs say:
    # Boot Target ID-Specifies the SCSI ID of your boot device.
    # Boot LUN Number-Specifies which LUN (Logical Unit Numbers) to boot
    from on your boot device.

    but if grub is located in the MBR what do I pick?
    The drive is:
    sda1 = /boot
    sda2 = swap
    sda3 = /

    I've tried 0,0 & 0,2 - all I get is a blank screen. And I'm not
    sure what question to ask.

    Tks, Chuck

    chuck Guest

  3. #3

    Default Re: Booting with a AHA-2940U2W

    chuck <com> writes:

     

    [...]
     

    [...]

    Read again. The question is: What is the SCSI ID of your hard
    disk? /dev/sda ist simply the first disk on the SCSI bus, regardless
    of the ID. You'll either have to check the SCSI BIOS for details,
    look at the bootup messages from the SCSI controller or check
    the drive's jumper settings.

    Michael
    --
    Michael Buchenrieder * greenie.muc.de * http://www.muc.de/~mibu
    Lumber Cartel Unit #456 (TINLC) & Official Nets
    Note: If you want me to send you email, don't munge your address.
    Michael Guest

  4. #4

    Default Re: Booting with a AHA-2940U2W

    Turns out the scsi booting is not the problem (I think).
    Seem's it's been trying to boot, but the grub loader gets
    corrupted - if I boot from the Fedora CD - follow the standard
    install path - Grub->sda MBR, and "minimal install" ... boots
    just fine (thank you very much) .. however if I do the exact
    same thing and select say "workstation" ( which I was doing )
    I get a blank boot screen or chars of 3 horz bars and a char
    that looks like a "J". And if I go back and tell the installer
    to install a workstation - "don't do the bootloader" ...
    corrupt again. %$!$^&$%!&%&#%&

    Tks, Chuck
    (new thread TBD)

    Michael Buchenrieder wrote: 
    >
    >
    > [...]
    >

    >
    >
    > [...]
    >
    > Read again. The question is: What is the SCSI ID of your hard
    > disk? /dev/sda ist simply the first disk on the SCSI bus, regardless
    > of the ID. You'll either have to check the SCSI BIOS for details,
    > look at the bootup messages from the SCSI controller or check
    > the drive's jumper settings.
    >
    > Michael[/ref]

    Chuck Guest

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