Grub Root Error 27
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Grub Ls Error 27 Unrecognized Command
posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & error 27 unrecognized command grub centos Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a grub rescue error unknown filesystem minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Trouble booting server from GRUB prompt up vote 4 down vote favorite I just installed
Grub Rescue No Such Partition
CentOS 6.2 on my server but it keeps going to the GRUB prompt. I've never used Grub before but did some digging online. Looks like I have to run the kernel command before I can boot the system. However, the kernel command is not running. As I installed the OS I checked the box that said something like "Install boot loader on /dev/sda". The following is what I've done: grub> find /vmlinuz-2.6.32-220.el6.x86_64 (hd1,0) grub> root (hd1,0) grub> kernel /vmlinuz-2.6.32-220.el6.x86_64 root=/dev/sda1 Error 27: Unrecognized
Grub Rescue Commands List
command I've tried it with and without the root=/dev/sda1, just /dev/sda, also tried a ro inserted in the middle but nothing works. I've read the docs but at a bit of a loss. Any suggestions? linux centos grub2 share|improve this question edited Dec 27 '13 at 0:39 Braiam 16.9k955100 asked Feb 8 '12 at 22:43 ngramsky 12113 migrated from serverfault.com Feb 8 '12 at 23:17 This question came from our site for system and network administrators. I suggest writing a real question... not "any suggestions?" –Chris S Feb 8 '12 at 23:18 The question is 'How to boot the server', as noted in the title. I've had my questions downgraded in the past for not showing what I have tried thus far. I'm trying to boot the server and have attempted to do so with the following approach... –ngramsky Feb 9 '12 at 0:13 add a comment| 3 Answers 3 active oldest votes up vote 1 down vote Your missing commands, which is the main reason your having this problem. I also recommend entering your commands from the edit screen, and then booting with CTRL-X here is an example, I would assume you will have to change things to fit your installation. root (hd1,0) kernel /vmlinuz-2.6.18-92.1.22.el5 ro root=LABEL=/ initrd /initrd-2.6.18-92.1.22.el5.img If this doesn't point you in the right direction, or you have another error message, comment under this and I will help more in depth. Also worth mentioning, I believe the default GRUB install
Computing Tutorials Open Source Pro LearnWhat is Linux? Training Certification Events Webinars CommunityParticipate Q&A Forums Blogs ResourcesNewsletter Distributions Publications Infographics Photos Videos Jobs Carla Schroder June 12, 2014 How to Rescue a Non-booting GRUB 2 on Linux Once /boot/grub/i386-pc/normal.mod not found upon a time we had legacy GRUB, the Grand Unified Linux Bootloader version 0.97.
Grub Filesystem Type Unknown
Legacy GRUB had many virtues, but it became old and its developers did yearn for more functionality, and thus did GRUB 2 insmod normal unknown filesystem come into the world. GRUB 2 is a major rewrite with several significant differences. It boots removable media, and can be configured with an option to enter your system BIOS. It's more complicated to configure with http://unix.stackexchange.com/questions/31226/trouble-booting-server-from-grub-prompt all kinds of scripts to wade through, and instead of having a nice fairly simple /boot/grub/menu.lst file with all configurations in one place, the default is /boot/grub/grub.cfg. Which you don't edit directly, oh no, for this is not for mere humans to touch, but only other scripts. We lowly humans may edit /etc/default/grub, which controls mainly the appearance of the GRUB menu. We may also edit the scripts in /etc/grub.d/. These are the scripts that boot your operating https://www.linux.com/learn/how-rescue-non-booting-grub-2-linux systems, control external applications such as memtest and os_prober, and theming./boot/grub/grub.cfg is built from /etc/default/grub and /etc/grub.d/* when you run the update-grub command, which you must run every time you make changes. The good news is that the update-grub script is reliable for finding kernels, boot files, and adding all operating systems to your GRUB boot menu, so you don't have to do it manually. We're going to learn how to fix two of the more common failures. When you boot up your system and it stops at the grub> prompt, that is the full GRUB 2 command shell. That means GRUB 2 started normally and loaded the normal.mod module (and other modules which are located in /boot/grub/[arch]/), but it didn't find your grub.cfg file. If you see grub rescue> that means it couldn't find normal.mod, so it probably couldn't find any of your boot files. How does this happen? The kernel might have changed drive assignments or you moved your hard drives, you changed some partitions, or installed a new operating system and moved things around. In these scenarios your boot files are still there, but GRUB can't find them. So you can look for your boot files at the GRUB prompt, set their locations, and then boot your system and fix your GRUB configuration. GRUB 2 Command Shell The GRUB 2 command shell is just as powerful as the shell in legacy GRUB. You can use
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about http://askubuntu.com/questions/142300/how-to-fix-error-unknown-filesystem-grub-rescue Stack Overflow the company Business Learn more about hiring developers or posting ads with us http://www.linuxquestions.org/questions/linux-newbie-8/grub-17-error-697897/ Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to error 27 fix "error: unknown filesystem. grub rescue> [duplicate] up vote 36 down vote favorite 20 This question already has an answer here: Grub rescue - error: unknown filesystem 4 answers I get this error: Error: unknown filesystem. grub rescue> I'm not exactly sure what I did. I believe I installed Ubuntu over Windows on my Acer netbook. I then tried to install Linux Mint, but it wouldn't start installing. I turned the netbook off error 27 unrecognized and back on. Now I get the error. I have read a lot of other questions like this, but in my case I cannot boot a CD. If I put a Ubuntu CD or a Linux Mint CD into my external CD/DVD drive and change my BIOS to boot the CD-ROM first, it just gives me the same error screen. Update copied from comment dated 2012-05-26 02:54:29Z Here are some results from my commands: grub rescue>ls (hd0) (hd0,msdos5) (hd0,msdos1) grub rescue>ls (hd0,msdos5) unknown filesystem grub rescue>ls (hd0,msdos1) unknown filesystem grub rescue>ls (hd0) unknown filesystem grub2 share|improve this question edited Apr 20 at 11:00 Community♦ 1 asked May 26 '12 at 2:25 Hjke123 190247 marked as duplicate by belacqua, Warren Hill, user.dz, bain, psusi Jul 1 '14 at 18:59 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. do you have ubuntu live ISO in internal hard drive? –virpara May 26 '12 at 2:45 If there is no defect in either your Ubuntu or Mint install CDs then either your hardware is broken or your BIOS is simply not trying to boot from the CD even though you think you told it to do that. Plea
Search HCL Search Reviews Search ISOs Go to Page... LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie Grub 17 Error?? User Name Remember Me? 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 Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions.org? Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here. Having a problem logging in? Please visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. Search this Thread 01-17-2009, 02:29 AM #1 linuxshadow LQ Newbie Registered: Jun 2008 Posts: 18 Rep: Grub 17 Error?? I have never been successful in getting out of this issue ever. Ubuntu 7.04 was running on my Machine with Win Xp. Suddenly yesterday I see GRUB 17 Error. Code: ubuntu@ubuntu:/boot$ sudo fdisk -l omitting empty partition (5) Disk /dev/sda: 250.0 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x31a431a