Redhat Grub Error 2
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Hello, I have 2 systems (identical) on 2 different disks: THis is my /etc/grub.conf boot=/dev/sda title Fedora (2.6.23.17-88.fc7)
How To Solve Grub Error In Redhat Linux
root (hd0,7) kernel /boot/vmlinuz-2.6.23.17-88.fc7 ro root=/dev/sda8 rhgb quiet selinux=0 initrd /boot/initrd-2.6.23.17-88.fc7.img how to recover grub in redhat linux title Fedora (2.6.23.17-88.fc7 new) root (hd1,4) kernel /boot/vmlinuz-2.6.23.17-88.fc7 ro root=/dev/sdb5 rhgb quiet selinux=0 initrd /boot/initrd-2.6.23.17-88.fc7.img I can how to fix grub error in linux easily boot on /dev/sda8, but not on /dev/sdb5, However, if I do: root (hd0,7) kernel /boot/vmlinuz-2.6.23.17-88.fc7 ro root=/dev/sdb5 rhgb quiet selinux=0 initrd /boot/initrd-2.6.23.17-88.fc7.img then I can boot on
System Boots To Grub> Prompt After A Reboot
/dev/sdb5 I try plenty of things but I have not been able to make it works properly. When I try to make a grub-install from /dev/sdb5, I get: Probing devices to guess BIOS drives. This may take a long time. The file /boot/grub/stage1 not read correctly. I check the /boot/grub/device.map (it has both! hd0 and
Grub Problem In Linux
hd1). Still from /dev/sdb5, If I do: grub then: root (hd1,4) I get: Filesystem type is ext2fs, partition type 0x83 find /boot/grub/stage1 gives: (hd0,7) !!! Same if I do: find /boot/vmlinuz-2.6.23.14-64.fc7 It only find the one on sda8 and never the one on sdb5 It does the same from both systems (loading from sda8 or sdb5) I check both kernels are identical and at the right place. then: setup (hd0) gives: Checking if "/boot/grub/stage1" exists... no Checking if "/grub/stage1" exists... no Error 2: Bad file or directory type How can I fix this grub configuration ? thank. -- --- ========================================================================== Patrick DUPRÉ | | Department of Chemistry | | Phone: (44)-(0)-1904-434384 The University of York | | Fax: (44)-(0)-1904-432516 Heslington | | York YO10 5DD United Kingdom | | email: pd520 york ac uk ==========================================================================_______________________________________________ York mailing list York lists lug org uk https://mailman.lug.org.uk/mailman/listinfo/york Follow-Ups: Re: grub From: Mikkel L. Ellertson [Date Prev][Date Next] [Thread Prev][Thread Next] [Thread Index] [Date Index] [Author Index]
Accessing the SCSI Utilities from Rescue Mode36.3. Using Rescue Mode to Fix or Work Around Driver Problems36.3.1. Using RPM to Add, Remove, or Replace a Driver36.3.2. Blacklisting redhat boots to grub prompt a DriverNext Chapter 36. Basic System Recovery36.1. Rescue Mode36.1.1. Common Problems36.1.2. Booting
How To Troubleshoot Grub Error In Linux
into Rescue Mode36.1.3. Booting into Single-User Mode36.1.4. Booting into Emergency Mode36.2. Rescue Mode on Power Systems troubleshooting linux boot problems servers36.2.1. Special Considerations for Accessing the SCSI Utilities from Rescue Mode36.3. Using Rescue Mode to Fix or Work Around Driver Problems36.3.1. Using RPM to Add, Remove, https://www.redhat.com/archives/rhl-list/2009-February/msg02839.html or Replace a Driver36.3.2. Blacklisting a Driver When things go wrong, there are ways to fix problems. However, these methods require that you understand the system well. This chapter describes how to boot into rescue mode, single-user mode, and emergency mode, where you can use your own knowledge to repair the system. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/ap-rescuemode.html 36.1. Rescue Mode 36.1.1. Common Problems You might need to boot into one of these recovery modes for any of the following reasons: You are unable to boot normally into Red Hat Enterprise Linux (runlevel 3 or 5). You are having hardware or software problems, and you want to get a few important files off of your system's hard drive. You forgot the root password. 36.1.1.1. Unable to Boot into Red Hat Enterprise Linux This problem is often caused by the installation of another operating system after you have installed Red Hat Enterprise Linux. Some other operating systems assume that you have no other operating system(s) on your computer. They overwrite the Master Boot Record (MBR) that originally contained the GRUB boot loader. If the boot loader is overwritten in this manner, you cannot boot Red Hat Enterprise Linux unless you can get into rescue mode and reconfigure the boot loader. Another common problem occurs
HOWTO, TROUBLESHOOTING | Reply More Grub Issue LINUX TROUBLESHOOTING GRUB is GRand Unified Bootloader, the default bootloader for Linux kernel based Operating Systems. If you have a dual boot system, like Windows and Linux, http://linoxide.com/linux-how-to/fix-grub-filesystem-type-unknown-error-on-centosredhat/ then you may have some issues with GRUB. If you install Windows after Linux installation, https://www.howtoforge.com/tutorial/repair-linux-boot-with-grub-rescue/ then Windows puts its own bootloader on the MBR. So GRUB is no longer visible. GRUB needs to be reinstalled in this case. This article provides some scenarios that leave the GRUB unbootable and how GRUB can be reinstalled in order to fix the problem. GRUB Rescue When GRUB is unable to boot your system, or is unable to grub error find the second stage, it drops the user to the GRUB prompt that looks like: error: unknown filesystem grub rescue > Reinstall GRUB First of all, you need to boot your system. At the GRUB prompt, you can run the following commands to boot your system up. root (hd0,0) kernel /vmlinuz-2.6.18-238.el5 ro root=/dev/sda1 initrd /initrd-2.6.18-238.el5.img boot Of course, your version of Linux kernel and initrd file would be different. And this works on GRUB grub error in Legacy only. For GRUB 2, you would need to run the following commands in order to boot. set root=(hd0,6) set prefix=(hd0,6)/boot/grub insmod normal normal Here also, you will need to change the partition to your boot partition. If you are unable to boot your system (which might be due to bad filesystem, or due to missing GRUB configuration file), you will need to boot from some other medium. You can use some bootable rescue CD or the Live CD of your distribution if available. Once you have booted into your system, you might need to create the GRUB configuration files, if missing or if misconfigured. To create these configuration files, run $ update-grub This command needs superuser privileges. So run this command (and the following commands in this article) as root. The next step is to install GRUB on the MBR. This will fix the problem caused by Windows, in which Windows installs its bootloader on MBR, after installation of Windows over Linux. Here I assume that you have booted from the Live or rescue CD. Now, before we go to the details of installing GRUB on MBR, we need to mount the root partition of Linux. $ mount /dev/sda1 /mnt Here, the root partition is assumed to be /dev/sda1. This partition is mounted on /mnt directory. You can choose you
free trial of JIRA Service Desk and get your Konami Code shirt. On this page How it looks? Basic commands available. The Rescue Shell. After Booting the system. As GRUB 2's ability to fix boot problems has greatly improved over the original GRUB bootloader. This article provides you with information on available options for repairing GRUB 2 boot issues and specific instructions on how to use the GRUB 2 terminal. The instructions are written for GRUB 2. How it looks? There are basically three error messages or screens when GRUB fails to boot. grub>: This is the screen mode you see when GRUB has found everything except the configurationn file. This file probably will be grub.conf. grub rescue>: This is the mode when GRUB 2 is unable to find the GRUB folder or its contents are missing/corrupted. The GRUB 2 folder contains the menu, modules and stored environmental data. GRUB: Just "GRUB" nothing else indicates GRUB 2 failed to find even the most basic information needed to boot the system. These are the basic errors that may occur during booting. Although there are a few more errors that can be seen on the screen like frozen splash screen, Busybox or Initramfs: GRUB 2 began.... But each of the GRUB 2 failure modes can be corrected either from GRUB 2 terminal or the Live boot CD or DVD of the distro, there are also 3rd party rescue tools available out there. Basic commands available. These are the commands that can be used when you enter the GRUB 2 terminl mode by pressing "c". boot (Initiate the boot, also F10 or CTRL-x) cat (view the contents of config or txt files; cat (hd0,1)/boot/grub/grub.cfg) configfile (Load a GRUB 2 configuration file such as grub.cfg; configfile (hd0,5)/boot/grub/grub.cfg.) initrd (Loads the initrd.img, necessary for booting; initrd (hd0,5)/initrd.img.) insmod (Loads a module; insmod (hd0,5)/boot/grub/normal.mod, or insmod normal.) linux (Loads the kernel; insmod /vmlinuz root=(hd0,5) ro.) loop (Mount a file as a device;