Re: How do you clear a botched kernel on a PPC system?

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On Sep 27, 2009, at 3:20 AM,  a helpful person wrote me off-list:

(Leaving out the name in case the off-list was intentional. Or maybe it was because it was a reply to my mis-post to the -test-list.)

On Sat, Sep 26, 2009 at 07:19:45PM +0900, Joel Rees wrote:

it tells me that I should try passing in the init= parameter. I tried
several permutations of what I thought was the probable syntax,

boot: hd:3,/vmlinuz-2.6.29.5-191.fc11.ppc init=/
initrd-2.6.29.5-191.fc11.ppc.img
yh
Err..., init is a program you are running first.  If everything
else failed try 'init=/bin/bash'

Okay, [...] init=/bin/bash
...
VFS: mounted root [and something I missed as it rebooted.]
Freeing unused kernel memory: 332k init
Warning: unable to open an initial console.
Failed to execute /bin/bash. Attempting defaults. . .
Kernel panic. - not syncing: No init found. Try passing init= option to kernel.
Rebooting in 180 seconds.

Don't you have some earlier kernel which still boots?  If that fails
too then maybe indeed your /sbin/init is messed up but that would
have nothing to do with kernels.


The previous kernel did work, as I mentioned in another post, but only when I went in, renamed it (and the three other files) and so forth, as I described in the other post. I've yum remove-d kernel-2.6.30.5-43.fc11.ppc, and so it boots the old kernel and seems to run okay.

So if the init= parameter is not supposed to be the initrd file, the bug in yaboot (under this ibook's openfirmware) might be that it's trying to pass an init= parameter when none is specified on the boot line. Hmm.

I got a message back from the developers, from a comment I left where someone else reported this bug. Getting a fixed kernel is going to take a little time, they say.

In the meantime, I'm avoiding updating, to keep the kernel at the previous level, and hoping the kernel/userland level mismatch will not bomb me out of anything important.

Thanks.
Joel Rees

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