LinuxQuestions.org
Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 12-31-2015, 02:45 AM   #1
zillur
Member
 
Registered: Apr 2015
Posts: 210

Rep: Reputation: Disabled
After update booting problem


Hi there,
I was trying to update my workstation remotely. Its centos 7. In the middle of update I got disconnected. Then one of my friend tried to boot up, but it shows the attached screen. Anyone give me some hints, What should I do now?

Best Regards
Zillur
Attached Thumbnails
Click image for larger version

Name:	20151230_112453.jpg
Views:	40
Size:	203.1 KB
ID:	20411  
 
Old 12-31-2015, 07:50 PM   #2
syg00
LQ Veteran
 
Registered: Aug 2003
Location: Australia
Distribution: Lots ...
Posts: 15,721

Rep: Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120Reputation: 2120
That is a kernel error. Losing the connection shouldn't cause something like that normally.
Do you have another (i.e. your previous) kernel listed on the boot menu ?. If so try that.
 
1 members found this post helpful.
Old 01-01-2016, 02:13 AM   #3
zillur
Member
 
Registered: Apr 2015
Posts: 210

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by syg00 View Post
That is a kernel error. Losing the connection shouldn't cause something like that normally.
Do you have another (i.e. your previous) kernel listed on the boot menu ?. If so try that.
Thank you very much for your kind suggestion. How can I check if I have another kernel?

Best Regards
Zillur
 
Old 01-10-2016, 10:42 PM   #4
zillur
Member
 
Registered: Apr 2015
Posts: 210

Original Poster
Rep: Reputation: Disabled
Hi there,
Is there any suggestion from anyone about this matter? I am new here and I don't know how to check kernel error, boot menu etc.

Best Regards
Zillur
 
Old 01-10-2016, 11:16 PM   #5
berndbausch
Senior Member
 
Registered: Nov 2013
Location: Tokyo
Distribution: Redhat/Centos, Ubuntu, Raspbian, Fedora
Posts: 1,691

Rep: Reputation: 353Reputation: 353Reputation: 353Reputation: 353
Quote:
Originally Posted by zillur View Post
Hi there,
Is there any suggestion from anyone about this matter? I am new here and I don't know how to check kernel error, boot menu etc.
At boot time, you should get a few seconds to interrupt the boot process by pressing any key. This should give you a menu similar to the first screenshot at https://help.ubuntu.com/community/Grub2 (the page is about Ubuntu, not Centos, but it looks similar).

You should have more than one menu entry; at least a "normal" entry and a rescue one, and perhaps a few more. If there are more "normal", non-rescue entries, I would start with those.
 
1 members found this post helpful.
Old 01-29-2016, 11:15 AM   #6
zillur
Member
 
Registered: Apr 2015
Posts: 210

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by berndbausch View Post
At boot time, you should get a few seconds to interrupt the boot process by pressing any key. This should give you a menu similar to the first screenshot at https://help.ubuntu.com/community/Grub2 (the page is about Ubuntu, not Centos, but it looks similar).

You should have more than one menu entry; at least a "normal" entry and a rescue one, and perhaps a few more. If there are more "normal", non-rescue entries, I would start with those.
Thank you very much for your kind suggestion. I was away from the computer. Yesterday, I was trying to boot up the machine according to the quoted link and many other source, like: https://www.linux.com/learn/tutorial...ub-2-on-linux/ etc.
When I interrupt booting by pressing "c" and then a grub> terminal appeared. I tried to explore my filesystem like (hd0,1), (hd0,2), (hd0,3) and (hd0,4). Among these partitions I found /boot directory only in (hd0,3):
Quote:
ls (hd0,3)/boot
but inside /boot it is showing no kernel. Is there any way to solve this?
If I just simply boot into rescue mode from the queue during booting it is showing me :
Quote:
"Oh no! Something has gone wrong." and "A problem has occurred and the system can't recover. Please contact a system administrator."
But I can get access through "ssh" and can run anything and found many kernels in the /boot folder (attached).
If I want to update the system
Quote:
yum update
, it is showing me some error message including many duplicates (attached). How can I delete these duplicates, remotely? Thanks in advance.

Best Regards
Zillur
Attached Thumbnails
Click image for larger version

Name:	:boot.png
Views:	7
Size:	218.7 KB
ID:	20681   Click image for larger version

Name:	Too_many_duplicates.jpg
Views:	7
Size:	130.6 KB
ID:	20682  
 
Old 02-01-2016, 08:51 PM   #7
zillur
Member
 
Registered: Apr 2015
Posts: 210

Original Poster
Rep: Reputation: Disabled
Hi there,
Any help about these situations, please. I am stuck here. It will very much helpful for me if anyone got any suggestion.
Quote:
but inside /boot it is showing no kernel. Is there any way to solve this?
Best Regards
Zillur
 
Old 02-01-2016, 09:01 PM   #8
MrTux
Member
 
Registered: Dec 2015
Posts: 131

Rep: Reputation: Disabled
Did you try a different entry? It usually gives you a few seconds before booting.
 
1 members found this post helpful.
Old 02-01-2016, 09:18 PM   #9
zillur
Member
 
Registered: Apr 2015
Posts: 210

Original Poster
Rep: Reputation: Disabled
Thanks a lot for a quick reply. I really appreciate it. Yeah. I tried several times in several ways. I tried to explore my filesystem like (hd0,1), (hd0,2), (hd0,3) and (hd0,4).
Code:
ls (hd0,3)/boot
only shows no error(in other partitions there were always error returned), but it shows no files. i tried to
Code:
set root (hd0,3)/boot
Code:
boot vmlinuz-
then tab but it doesn't show any full name like : vmlinuz-3.10.0-327.4.4.el7.x86_64

Any idea???
 
Old 02-02-2016, 01:43 PM   #10
zillur
Member
 
Registered: Apr 2015
Posts: 210

Original Poster
Rep: Reputation: Disabled
Any suggestion about this matter. I am stocked here. Thanks in advance.

Best Regards
Zillur
 
Old 02-02-2016, 02:56 PM   #11
Emerson
LQ Guru
 
Registered: Nov 2004
Location: Saint Amant, Acadiana
Distribution: Gentoo ~arch
Posts: 5,960

Rep: Reputation: Disabled
If I had this issue I'd boot from SystemRescueCD, I have a dedicated USB stick with it. Once booted I'd check if filesystems are healthy and see what's in /boot.
 
1 members found this post helpful.
Old 02-02-2016, 08:02 PM   #12
zillur
Member
 
Registered: Apr 2015
Posts: 210

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by Emerson View Post
If I had this issue I'd boot from SystemRescueCD, I have a dedicated USB stick with it. Once booted I'd check if filesystems are healthy and see what's in /boot.
Thank you very much for your suggestion. But how can I do this? What I need in the USB and how I can boot from USB?

Best Regards
Zillur
 
Old 02-02-2016, 08:09 PM   #13
Emerson
LQ Guru
 
Registered: Nov 2004
Location: Saint Amant, Acadiana
Distribution: Gentoo ~arch
Posts: 5,960

Rep: Reputation: Disabled
USB install instructions.
 
Old 02-02-2016, 08:29 PM   #14
MrTux
Member
 
Registered: Dec 2015
Posts: 131

Rep: Reputation: Disabled
Or make a livedisc
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
linux 4 update 6 booting problem ecd12345 Linux - Newbie 1 08-13-2015 01:42 AM
[SOLVED] Ubuntu not booting after update to 3.0.0.15 nontas.v Linux - Newbie 5 02-09-2012 10:33 AM
Problem booting on new kernel after update pmorin Linux - Server 9 07-22-2011 02:58 AM
Not booting after latest update Intel_ Slackware 19 05-18-2010 11:56 AM
booting problem after kernel update me_too Linux - Newbie 7 04-28-2008 11:33 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 08:50 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration