[clue-tech] Compaq Armada 3500 woes

[Bill Smith]

Hi Jim, the otuput to the 1st command is: brw-rw---- 1 root disk 8, 0 Nov 23 15:28 /dev/sda and the /dev/sda is in yellow
The output to the 2nd is: mknod: '/tmp/sda': Operation not permitted
Then I realized I was not root, did that and tried again. Same for the 1st output. 2nd output is: back at the prompt, then for grub-install /dev/sda the output is, 1st line: grub-probe: error: cannot find a device for / (is /dev mounted?). 2nd line: grub-probe: error: cannot find a dvice for /boot/ (is /dev mounted?). 3rd line: Could not find device for /boot: Not found or not a block device>
 


Date: Tue, 23 Nov 2010 09:32:47 -0700
From: ockers at ockers.net
To: clue-tech at cluedenver.org
Subject: Re: [clue-tech] Compaq Armada 3500 woes


Hi Bill,

If you ever get a "/dev/sda: not found" type message, please do the following to see if it exists:

ls -al /dev/sda

If there is no device node for that device, you either need to mount the automagic /dev filesystem that will populate the directory based on the device drivers loaded into the kernel, or else consider creating it yourself.  IIRC sda is 8,0:

mknod /dev/sda b 8 0

If you can't write to the /dev directory, then create the device node in /tmp:

mknod /tmp/sda b 8 0

Then you can use your other commands such as grub-install to access that device.  The major & minor numbers on the device node "file" tell the kernel what device driver will handle the ioctl()s.  If the SCSI device driver chain is not loaded into the kernel then you wouldn't be able to access /dev/sda either, so make sure all the necessary driver modules are loaded if you have any trouble using a SCSI block device node.

HTH,
Jim
-- 
Jim Ockers, P.Eng. (ockers at ockers.net)
Contact info: http://www.ockers.ca/pason.html

Bill Smith wrote: 


I'm a relative newbie, so exactly what are the commands, and in what order? Thanks Bill
 


Date: Tue, 23 Nov 2010 09:15:40 -0700
From: g1ccross at gmail.com
To: clue-tech at cluedenver.org
Subject: Re: [clue-tech] Compaq Armada 3500 woes

I think you need to mount /dev to to chroot before chrooting. Try mount -o bind /dev /mnt/dev. I am not sure but I usually mount proc in the chroot also.

On Nov 23, 2010 9:08 AM, "Bill Smith" <wpsmithii at msn.com> wrote:
> 
> Hi all, I dug around and found a grub install procedure for Knoppix. Here's what happened. First I did "fdisk -1" and I got 3 partitions as I had installed. The boot was /dev/sda1 and it was listed as ID: 83 ,system: linux, this should be ext3, the start was 1 end was 2374, 19+ Gig. The commands I used as root are as follows:
> mount -t ext3 -o rw /dev/sda1 /mnt
> chroot /mnt
> grub-install /dev/sda 
> The feedback from this was
> /dev/sda: Not found or not a block device
> 
> 
> Thanks in advance. Bill 

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