Booting ancient kernels on Ubuntu 9.10

[Luis R. Rodriguez]

On Mon, Jan 18, 2010 at 7:01 AM, Stefan Bader
<stefan.bader at canonical.com> wrote:
> Luis R. Rodriguez wrote:
>> On Fri, Jan 15, 2010 at 10:28 AM, Luis R. Rodriguez <mcgrof at gmail.com> wrote:
>>> Curious if other developers have tried to boot ancient kernels on
>>> Ubuntu 9.10. I've had issues, seems init fails while trying to mount
>>> the root filesystem but I'm not yet sure why that is. I tried 2.6.23
>>> and 2.6.24 but no luck. I have the other kernels, will see at which
>>> one it started to fail, but curious if others have tried.
>>
>> I've tested 2.6.23 all the way up and the last working kernel is
>> 2.6.27. Here's a picture of 2.6.25 boot failure, but its the same on
>> 2.6.26:
>>
>> http://bombadil.infradead.org/~mcgrof/images/2010/boot-9.10-on-2.6.25.jpg
>>
>> I'm using stock kernel builds for >= 2.6.27 as that is when Ubuntu
>> started producing mainline kernels, I've built the others which makes
>> me suspect I misconfigured them. Here's my config on 2.6.26, for
>> example:
>>
>> http://bombadil.infradead.org/~mcgrof/configs/2010/config-2.6.26.8-fail-on-9.10.txt
>>
>> Not sure what it could be.
>>
>>   Luis
>>
> Not really sure what it might be in that case. Often its changes in either udev
> messages or sysfs layout. The first message on the screen sounds a bit likes
> some path in sysfs is not found. Though it might be a follow up.
> A problem between 2.6.24 and later could be that sysfs changed some entries to
> be links instead of directories and at least lvm2 had its troubles with that
> going the other way round (using a newer kernel on an older system).
> Does your boot get up enough to get a busybox shell to play around with?

Nope, unfortunately it does not.

  Luis