DiskOnChip Problem

[Tim Westbrook]

Hello Guillaume,
    Oddly enough, I found myself in your exact same
situation tonight. I am using a doc system as well,
with the target being an uncompressed ext2 partion on
ramdisk. 

    I was able to get around your particular problem
by creating an msys subdirectory in my
/project/minimal/mnt/dev directory.

    It seems that the portion of the script that
creates the boot device directory structure does not
create multi-level /dev entries. So you may be seeing
cp error messages when your run "load target"

   You may be able to do this with the custom files
option I did it by editing the script file that
creates these directory entries.

   Also make sure that the doc driver is loaded, i am
using a modular driver so i had to modify the linuxrc
in the initrd to load the driver before attempting to
mount the root partition.

   I myself am having trouble with finding init. My
root partition seems to boot fine , but i get 
"Kernel Panic: No INIT found" I suppose for some
reason, the system can't read my root partition.
   
   A curious item, I noticed that for uncompressed
ext2 partitions booting from lilo, the linuxrc script
in the initrd copies the root partition from the
source partion on the flash to /dev/ram2, but the
fstab entry created points / to /dev/ram0. I don't
think this is my problem , but it seems sort of odd.
   
- Tim



--- Guillaume Sisteron <gsistero@com1.fr> wrote:
> Hi,
>  
> I'm trying to develop a Linux-based system on a Disk
> On Chip (8Mb).
>  
> I've got several problems, and although I've read
> your mailing list
> archive, I didn't find a great solution.
>  
> I'm using PeeWeeLinux 0.61.0 distribution.
> I build my file system (with DOC driver included as
> module or as static
> in the kernel : both don't work) and put it on the
> DiskOnChip (by
> replacing lilo with doc-lilo in the pwl-target-load
> script).
> I manage to boot on the DOC, but the system is then
> bloked while trying
> to mount the root partition.
>  
> It says something like: VFS unable to mount root
> partition on device
> 03:02.
>  
>  
> Do you know the problem or at least could you answer
> to the following
> questions:
>  
> 1)       Is it possible to put all the file system
> directly on the Disk
> On Chip target ?
> 2)       Is it necessary to use doc-lilo (and a
> special lilo.conf file)
> instead of lilo in the pwl_target_load script ?
> 3)       In the mailing list archive, some say it is
> necessary to first
> put everything on ide partition and then put
> everything on DOC ?
> 4)       On the web site, it is written: " Currently
> the loading of
> target devices directly attached to the development
> system are
> supported. These include floppy drives, IDE hard
> drives, scsi hard
> drives, M-Systems Disk-On-Chip and CompactFlash
> devices.".
> So what's the best method to load the file system on
> the DiskOnChip
> target ?
>  
>  
> Thanks very much for your answer !
>  
>  
> ---
> Guillaume SISTERON
> COM One
>  
> 


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