Re: Cannot boot with second SCSI disk

[andreas papst univie ac at]

On Wed, 16 Dec 1998 Frederic.Bossut@etu.utc.fr wrote:
> 
> On Wed, 16 Dec 1998 andreas.papst@univie.ac.at wrote:
> :Hi,
> Hi,
> 
> :
> :I need your help.
> :
> :I'm working on a DEC Alpha PC164SX with a lot of RAM.
> Great choice I have the same...

Cheap and very fast!

> 
> :
> :An ASUS SC875 UW SCSI controller
> :one IBM DDRS 4.5 GB UW-SCSI harddisk on SCSI id 0
> :one CD-drive Toshiba XM 6201B
> :RedHat 5.2 default kernel (2.0.35)
> :
> :and all works fine. But then I want to connect a second SCSI harddisk
> :(Seagate ST1515W) and the kernel cannot boot any more. It stops with an
> :arbitrary error message when unzipping the kernel and the message "halted".
> :BIOS and MILO recognizes the second harddisk!
> 
> I think that there is a problem with your scsi chain.
> 
> I mean:
> -are you sure that each device has an unique id?

Yes

> -are you sure that you have correctly ended your scsi chain with a
> terminator

OK. This has been one point. The PCI-SC875 has 3 connectors (2 internal,
1 external) and I must not use more than two of them, but my CD-drive
and internal HD drive have been connected to both of the internal connectors
and I have tried to connect the second harddisk to the external connector.
Now I have disconnected the CD drive but it is not a solution!

Current situation is now:

HD drive 0 (id 0) is connected to 68 pin internal connecter
HD drive 1 (id 1) is connected to 68 pin external connecter
internal 50 pin connector remains free.

Jumpers and resistors are not available on this card.
scsi chain is terminated correctly.

And I'm confused by the fact, that BIOS and MILO recognize all disks
correctly, e.g. I can format disk 1 with a BIOS function.

> -are you sure that there isn't too much terminators in your chain
> (one at each extremity only)

Yes

> 
> So if there is no problem with that i have an other idea
> 
> When you have first installed your Redhat 5.2, you should have specified
> the boot drive into your bios with some arguments for the kernel.
> 
> (in the menu OS Configuration, there is the possibility to view/change
> these values)
> 
> i think that your parameters are:
> 
> boot sda1:vmlinux.gz root=/dev/sda1
> sda stands for the first scsi drive detected. sdb, sdc, sdd for the second
> third...

In my case root partition is the fifth partition on harddisk 0 so
boot sda5:vmlinux.gz root=/dev/sda5
is correct.

> 
> If the new drive you just have bought has a minor scsi id than your
> original device, it will be placed before your boot drive.

Second disk has id 1
CD drive had id 6
First disk has id 0 (no minor id is available ;-)

> 
> So you have two solutions, to make it work:
> place your new drive with a higher id than the first one ( to let it stay
> the first) 
> 

On the other hand, the kernel would not be uncompressed if it is not
available at /dev/sda5

> Or change your parameter line to match:
> boot sdb1:vmlinux.gz root=/dev/sdb1
> 
> if your cddrive is between your two hard disks it shoud be
> boot sdc1:vmlinux.gz root=/dev/sdc1
> 
> Note that in this example your boot partition is the first of each drive,
> and your kernel's name is vmlinux.gz
> 
> :I tried to recompile the kernel only with NCR53C8xx support with
> :different options ("use normal IO,...) but this does not help.
> :
> :What goes wrong?
> :
> :Thanks 
> :ap
> :________________________________________________________________________
> :Andreas Papst                      |  E-Mail: andreas.papst@univie.ac.at
> :                                   |  Phone:
> :Vienna University Computer Center  |    +43 1 4277 / 140 36
> :Universitaetsstrasse 7             |  Fax.:
> :A-1010 Vienna, Austria, Europe     |    +43 1 4277 / 9 140
> 
>         _______________________________________
>        / ______   ______   ______   ____      /
>       / / ____/\ / __  /\ / ____/\ / _ |\    /
>      / / /\___\// /_/ / // /____\// /| ||   /
>     / / ___/\  /   __/ // ___/\  / / / /\  /
>    / / /\__\/ / /\ \_\// /___\/ / /_/ / / /
>   / /_/ /    /_/ /\_\ /_____/\ /_____/ / /
>  /  \_\/     \_\/  \_\\_____\/ \_____\/ /
> /______________________________________/
> Email    : <Frederic.Bossut@etu.utc.fr>
> Page web : <http://wwwetu.utc.fr/~bossutfr/>
  
Who has ideas?

ap
________________________________________________________________________
Andreas Papst                      |  E-Mail: andreas.papst@univie.ac.at
                                   |  Phone:
Vienna University Computer Center  |    +43 1 4277 / 140 36
Universitaetsstrasse 7             |  Fax.:
A-1010 Vienna, Austria, Europe     |    +43 1 4277 / 9 140