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Date: Fri, 14 Feb 2014 16:21:33 -0500
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Subject: Re: [gentoo-user] How to run 2.6.25 kernel (no DEVTMPFS)?
From: Mike Gilbert <floppym@gentoo.org>
To: gentoo-user@lists.gentoo.org
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On Fri, Feb 14, 2014 at 4:12 PM, Grant Edwards
<grant.b.edwards@gmail.com> wrote:
> I need to do some testing with kernels as far back as 2.6.25.  I've
> currently got a Gentoo box that can build and run kernels ranging from
> 3.14.rc2 to 2.6.32. There are various gcc and make issues which have
> been successfully dealt with, but now I'm stuck on DEVTMPFS.
>
> Prior to 2.6.32 DEVTMPFS isn't available, so even though I can build
> and boot a 2.6.25 kernel, udev craps out.
>
> There are plenty of spare paritions to play with, so doing a Linux
> install to test with kernels older than 2.6.32 is no problem.
>
> I'm wondering if instead of downloading an old Ubuntu or Fedora DVD,
> is there any way to install an "old" version of Gentoo that will work
> with pre-DEVTMPFS kernels?
>

Do you actually need udev? If you can get away with just having a
static /dev with pre-created device nodes, that would be the simplest
solution.