lilo and mtd ans doc

[Karl Hammar]

  $ man rdev
  ...
	 In a bootable image for the Linux kernel, there  are  sev­
	 eral  pairs  of  bytes  which specify the root device, the
	 video mode, the size of the RAM disk, and the swap device.
	 These  pairs  of  bytes,  by  default, begin at offset 504
	 (decimal) in the kernel image:

		 498 Root flags
		(500 and 502 Reserved)
		 504 RAM Disk Size
		 506 VGA Mode
		 508 Root Device
		(510 Boot Signature)

	 rdev will change these values.
  ...

I think that the default root device is the current root device.
To change:

  $ rdev vmlinux /dev/hda2

or similar.

Regards,
/Karl

-----------------------------------------------------------------------
Karl Hammar                    Aspö Data           karl at kalle.csb.ki.se
Lilla Aspö 2340             +46  173 140 57                    Networks
S-742 94 Östhammar         +46  10 270 26 67                  Computers
Sweden                                                       Consulting
-----------------------------------------------------------------------

From: Patrick Allaire <pallaire at gameloft.com>
Subject: RE: lilo and mtd ans doc 
Date: Tue, 4 Sep 2001 09:43:57 -0400

> I have tried what you have told me but it does not seem to change a thing
> !!! The systems is still hanging on "Kernel panic : VFS: Unable to mount
> root fs on 03:05" !!!!!!!!!
> 
> Where does it find the information to search 03:05 to boot ? I did compile
> the kernel on /dev/hda5 !!! Is there a place in the kernel config where I
> could specify the boot device ? Is this information stored in boot.b-mtd (I
> dont think so) ? In the /boot/map ??? the last one is generated by lilo ? no
> ? so it should not contain /dev/hda5 information since I run lilo-mtd from a
> floppy the HD was removed !
> 
> I have added those two lines to my lilo.conf :
> 
> prompt
> timeout=50
> 
> Then I have tried what you told me. When I boot ... I write :
> 
> lilo: s append="root=/dev/nftla1"
> 
> 
> For your question about why I am using /dev/nftla1 instead of /dev/nftla ...
> its because on our final product we will have multiple partitions.
> 
> Thank you !
> 
> 
> Patrick Allaire
> mailto:pallaire at gameloft.com
> If you can see it, but it's not there, it's virtual. 
> If you can't see it, but it is there, it's hidden. 
> It you can't see it and it isn't there, it's gone.
> 
> 
> 
> > -----Original Message-----
> > From: David Woodhouse [mailto:dwmw2 at infradead.org]
> > Sent: August 31, 2001 5:37 PM
> > To: Patrick Allaire
> > Cc: linux-mtd at lists.infradead.org
> > Subject: Re: lilo and mtd ans doc 
> > 
> > 
> > 
> > 
> > pallaire at gameloft.com said:
> > > Kernel Panic : VFS: unable to mount root fs on 03:05 
> > 
> > Er, that's /dev/hda5. It's not trying to mount the DiskOnChip at all.
> > Try append="root=/dev/nftla1" instead of just root=/dev/nftla1
> > 
> > LILO sucks like that.
> > 
> > BTW, how many partitions do you have on the DiskOnChip? If 
> > only one, why 
> > are you wasting space on partitions rather than just using a 
> > filesystem on 
> > /dev/nftla ?
> > 
> > --
> > dwmw2
> > 
> > 
> 
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