Re: [Mactel-linux-users] updating kernel screws up grub?

[Justin P. M. <jus...@gm...>]

On 04/21/2010 09:57 AM, Geoffrey wrote:
> Justin P. Mattock wrote:
>> On 04/21/2010 09:30 AM, Geoffrey wrote:
>>> Justin P. Mattock wrote:
>>>> On 04/21/2010 09:11 AM, Geoffrey wrote:
>>>>> Justin P. Mattock wrote:
>>>>>> On 04/21/2010 06:55 AM, Geoffrey wrote:
>>>>>>> So I rebuilt my kernel, insuring that I had ext3 support and I
>>>>>>> still get
>>>>>>> a panic, although it is a different message:
>>>>>>>
>>>>>>> Kernel panic - not syncing: VFS: Unable to mount root fs on
>>>>>>> unknown-block(0,0)
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> check your /etc/fstab and make sure
>>>>>> that it's /dev/sda* instead of /dev/hda*
>>>>>> (if your using the older ati-piix it's should
>>>>>> be /dev/hda* but using the new ati-piix it's
>>>>>> /dev/sda*)but could be wrong).
>>>>>
>>>>> Actually it's using the LABEL nomenclature, do you think this could be
>>>>> my problem?
>>>>>
>>>>> LABEL=/ / ext3 defaults 1 1
>>>>>
>>>>>
>>>>
>>>> could be..
>>>> here's what I have:
>>>> cat /etc/fstab
>>>>
>>>> # file system mount-point type options dump fsck
>>>> # order
>>>>
>>>> /dev/sda3 / ext4 defaults,errors=remount-ro,user_xattr 1 1
>>>> /dev/sda4 swap swap pri=1 0 0
>>>> /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
>>>> proc /proc proc defaults 0 0
>>>> sysfs /sys sysfs defaults 0 0
>>>> devpts /dev/pts devpts gid=4,mode=620 0 0
>>>> tmpfs /dev/shm tmpfs defaults 0 0
>>>> #none /selinux selinuxfs defaults 0 0
>>>> # End /etc/fstab
>>>>
>>>> does changing LABEL=/ to your device do anything?
>>>
>>> Just tried that, no difference.
>>>
>>>>
>>>> Justin P. Mattock
>>>>
>>>
>>>
>>
>> hm.. I'm wondering if your hitting something
>> with grub and the kernel i.g. I remember hitting something
>> similar because I had no bzimage just raw make install
>> vmlinuz(ended up having to upgrade to grub2 so that grub(*)
>> was able to read the extra bits and so forth or something
>> in that area).
>>
>> Also hit another issue similar as well with
>> PCI_MMCONFIG [=y]
>> (but this could already be fixed).
>
> I changed my grub entry for root from:
>
> root=LABEL=/
>
> to
>
> root=/dev/sda8
>
> Now I get a spontaneous reboot. I tried to snap a photo of it before it
> reboot, but it's blurred. I'll try again. Weird thing is that it says
> something about wacom driver and then a reference to reiserfs or some
> such. I don't know what the wacom driver would have to do with reiserfs,
> but I'm not using reiserfs anyway.
>
>

so changing your grub at-least takes care of the unable to find
VFS thing?!
and now the system boots up, and then instantly
reboot's? I have seen reports of things like that,
but have never hit something like that(if you can try early debugging 
with a remote machine to grab dmesg)

Justin P. Mattock