[PLUG] boot failure

[Don Buchholz]

The "attempt to read/write outside of 'hd0'" message
has me thinking your Grub installation was/is bad.
Maybe a fresh "grub2-install" will fix it?

I was wondering about the partition table, but if fsck(8)
was able to scan/fix the partition(s), then the partition
table data is probably OK.  The corrupt data in the
'sda1' filesystem isn't good.  Do you suspect that
power was simply yanked from it at one point?  Is
there any other reason why the data on your disk
might be corrupt?


On 11/4/2015 6:46 PM, Denis Heidtmann wrote:
> Thanks for the information.  I have been running the system on the dvd for
> a number of hours without incident.  I just ran sudo fsck.ext4 -fv
> /dev/sda1.  There were a number of errors, but nothing which looked very
> serious to me.  (All errors corrected.)  I should have captured the reports
> to a file, but instead I took two photos. Errors were inodes part of a
> corrupted linked list, inode w/zero dtime, block bitmap differences, free
> blocks count wrong, inode bitmap differences, free inodes count wrong.
> There were no bad blocks.  If the details are important I expect I can get
> the photos up.
>
> I should point out that this HD is new as of August, as is the OS (ubuntu
> 14.04 replacing 12.04).
>
> Assuming I have been hacked, how do I recover?  (I have not tried to reboot
> since running fsck.)
>
> Thanks again for your advice.
>
> -Denis
>
> On Thu, Nov 5, 2015 at 2:20 AM, Mark Phillips <mark at phillipsmarketing.biz>
> wrote:
>
>> Denis,
>>
>> Be sure you ran the system with the CD 12.04 for awhile, and you used the
>> system as you normally use it. If you have a heat problem, you need to
>> exercise your system as much as possible to see if the problem reappears.
>>
>> You can run diagnostics on your hard drive from the CD to see if you have a
>> HD problem. Someone on the list will know more about disk utilities on your
>> CD than I do.
>>
>> If there is no heat issue and no HD issues, then you may have been hacked.
>>
>> Mark
>>
>> On Wed, Nov 4, 2015 at 2:21 PM, Denis Heidtmann <denis.heidtmann at gmail.com
>> wrote:
>>
>>> Now there is something I can do.  CD 12.04 seems to run fine.  So you
>> would
>>>   point to SW.  How about the HD?  Is there a chance that an intruder
>> mucked
>>> things up?  Our system is not on line all the time--only when it is use.
>>>
>>> What to do next?
>>>
>>> Thanks so much.
>>>
>>> Gotta go now, but will be back this evening.
>>>
>>> -Denis
>>>
>>> On Wed, Nov 4, 2015 at 1:08 PM, Nat Taylor <bioborg at gmail.com> wrote:
>>>
>>>> A live cd or live usb stick running properly would tell u your issue is
>>>> software.  If it locks up too heat or power supply could be the
>> culprit.
>>>> On Wednesday, November 4, 2015, King Beowulf <kingbeowulf at gmail.com>
>>>> wrote:
>>>>
>>>>> On Wednesday, November 4, 2015, Denis Heidtmann <
>>>> denis.heidtmann at gmail.com
>>>>> <javascript:;>>
>>>>> wrote:
>>>>>
>>>>>> The precursor may or may not be related.
>>>>>>
>>>>>> I discovered that my wife's gmail had been accessed by an iphone on
>>>> Nov,
>>>>>> 1.  We have no iphone, and were home alone at the time listed.  So
>> I
>>>>>> changed the pass word.  Then tried to open firefox.  Would not
>> load.
>>>>>> Nothing would work, except the mouse pointer would move around.
>> Had
>>> to
>>>>> use
>>>>>> the power button to restart.  Now I get error: attempt to read or
>>> write
>>>>>> outside of disk 'hd0'.  Entering rescue mode.  grub rescue>
>>>>>>
>>>>>> Yesterday the computer froze in a similar fashion when my wife was
>>>>> looking
>>>>>> at email in evolution.  A power switch intervention was required,
>> but
>>>> it
>>>>>> booted fine at that time.
>>>>>>
>>>>>> So the two incidents point to hardware problems or intrusion?
>>>>>>
>>>>>> I have googled for grub rescue recovery, but what I found was aimed
>>> at
>>>>>> people with more understanding than I have.
>>>>>>
>>>>>> Are there suggestions that someone here can offer?
>>>>>>
>>>>>> thanks,
>>>>>> -Denis
>>>>>>
>>>>> sounds like overheating. When was the last time you cleared out the
>>> dust
>>>>> and checked CPU fan?  The thermal compound btween heat sink and CPU.
>>> will
>>>>> get brittle over time as well.
>>>>>
>>>>> -Ed