General :: Grub - Boot From Usb / During Startup System Complains About No Root Bein Found On /dev/sdb1?
Jun 2, 2011
I have installed a new Linux distro (just to test it) on my usb memory stick, and I'm trying to run it. I don't know if what I did is correct so far, anyways here's what I have:
Grub on sda (internal hard disk)
sdb with no boot loader (memory stick)
In grub I've been doing:
root (hd1,0)
kernel /kernel-genkernel-x86_64-2.6.37-sabayon root=/dev/sdb1 vga=normal
initrd /initramfs-genkernel-x86_64-2.6.37-sabayon
boot
This seems to work (as opposed to when I forgot the root= parameter, which almost destroyed my linux on sda1 ), but during startup the system complains about no root bein found on /dev/sdb1. I also tried (hd1,0), but it didn't change much.
I'm sure I can boot an OS from usb on my computer, so doesn anyone know what I'm doing wrong?
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Jul 4, 2010
I am trying to Upgrade from Fedora 12 to Fedora 13 using Preupgrade. My system downloads the the Upgrade and tries to install it but returns a message "Root of the previous system not found". I would really like to fix this problem but dont know how.
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Mar 20, 2010
I have minor problem with upgrading a hard drive. I am running an old pentium lll with two hard drives. On the first hard drive I have two partitions of around 90GB each. On the first partition is installed winXP and on the second partition I have Suse 10.3, both booted by grub and living happily side by side. My second hard drive (which is formatted for windows is only 4GB.
My problem arises when I try to replace the 4GB with a 80Gb hard drive. When I disconnect the 4GB drive the system fails to boot up and complains with error 21.
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Dec 11, 2010
I'm having a strange behaviour with GRUB, and I don't know much about it. The problem is that GRUB is looking at the wrong place when it starts. I have a /boot partition (/dev/sda1) with everything for booting and grub. This gets updated when I update, say, the kernel, grub, etc. But I also have a /backups partition (/dev/sda4) with a directory /backups/boot/grub that is a copy of /boot/grub. The /backups/boot directory only has the /backups/boot/grub directory, not the kernels, etc.
If I delete the /backups/boot/grub directory, I get a "grub>" console at startup, and system doesn't boot. SO: Why is grub looking at /backups/boot/grub instead of /boot/grub and how can I fix this? This is my grub.conf, identical in both directories, and both pointing to /boot=/dev/sda1=(hd0,0):
[Code]...
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May 10, 2011
On my PC, I use GRUB to manage my dual-boot startup on my PC. Every time I update my Linux, It adds another 2 startup options on my HD for every distro I have. (The Normal and Recovery modes for the new version.) I would like to add the VortexBox distro someday.
Is there a way for me to get rid of the older versions of Linux distro's on my GRUB menu so I just see the newest? I have 6 options for Ubuntu 10.10 and 4 options for UGE 2.8..
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Apr 29, 2009
There is a script that I want to run as root when the machine boots up(which starts the Redhat Certificate System services). The problem I have is if I put this on rc.local it wont run because I havent logged in as root. Is there a way that I can run this without logging in as root at the machine startup?
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Mar 1, 2010
I'm trying to use VirtualBox on a 64 bit host (Fedora 12), and install a 64 bit suse guest. I have VirtualBox installed just fine on the host, but when I try to launch the guest (booting from an iso) I get the message "This is a 32-bit computer. You cannot use 64-bit software on it". One thing to note, this host, while 64 bit, does not have the AMD-V extensions. (Not sure if this matters or not). I do however have another 64 bit host with the AMD-V extensions that runs a 64 bit guest just fine.
I confirmed `uname -m` on the host reports "x86_64". I also did a `file /usr/lib/virtualbox/VirtualBox` just to make sure I got the 64 bit version of VirtualBox Any ideas on why the guest os would think the host is 32 bit when it should be a 64 bit system?
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Sep 27, 2010
I am using Gentoo Linux and for a while now, the root file system is mounted read-only on booting. For obvious reasons, this is quite annoying as most services do not start up correctly (I do not use a separate file system for /var). After the system is up, I have to log in, remount the root file system read-write, fix /etc/mtab, mount all other file systems in from /etc/fstab and then start up all the missing daemons. I know that there are ways to make a system run properly with a read-only file system, but I would rather restore the old behaviour of a writable root file system.
The strange thing is that after running mount / -o remount,rw, the file system is mounted in writable mode without any errors. I suspected some problem with fsck, but now I have disabled automatic file system checks on the partition (tune2fs -c0 -i0).When I run dmesg, only these lines mention the partition at all, although I am not sure if not something gets lost because /var/log is not writable:
EXT3-fs (sda5): mounted filesystem with writeback data mode</code>
EXT3-fs (sda5): using internal journal
The line in /etc/fstab looks like this:
[code]....
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Aug 20, 2010
There are lots of OSs and Linux dists to install on your netbook, and I want to make it as easy as possible to install, remove and switch between them.
Just installing a dist and then another one after it will replace the GRUB boot screen every time, and some dists might override previous GRUB menus entirely.
On a previous machine I created a GRUB partition which chain-loads GRUB for each dist, but now I can't remember how I did it.
The hard drive is currently empty, since I started playing around with repartitioning. What is the easiest way to install GRUB to a partition? Links are welcome, but please no generic "install GRUB" guides because the ones I've found haven't been relevant to my particular situation (empty hard drive, multi boot environment, no CD/floppy)..
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Jan 18, 2010
Just installed ubuntu using a usb card. The installation was successful, but now there is a grub error 15 "file not found" on startup.The computer has two hard drives, and here is the output from fdisk -l.
Code:
Disk /dev/sda: 160.0 GB, 160000000000 bytes
255 heads, 63 sectors/track, 19452 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
[code]....
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May 21, 2011
Ubuntu 9.10 was set up to handle the booting selection - previously I thought it was xp but Ubuntu 9.10 "did" it. The system started out as a xp / ubuntu 9.10 dual boot on a 400gb drive. xp has 210gb, ub has 80 and their is a 100gb shared storage. Xp was installed first and then I followed a guide over at linuxconfig.org to get ub installed so that I could select which OS was wanted at boot. Ubuntu manages the boot up menu (Went back to look at my notes from the original setup) The owner tried to update to ub 11.04 and afterall was said and done the machine now boots to the message
error file not found grub rescue I can't say if 11.04 was properly installed or not. Ask whatever you like and I'll give the best answer I can. I think the xp install is okay but I can't say for certain as I don't know how to boot it outside the bootmanager at startup. Data has been saved so if I have to blow it all away and start over I can but I'm hoping I won't have to.
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Apr 10, 2010
I want to set up grub for a dual boot system of xp and vista. The thing is that I have vista installed and would have to install it ance again after setting up XP in order to use the microsoft bootloader. And secondly I slowly want to get into linux...
This is how I tried it: I have four partitions on my HD and want to install the Bootloader on /dev/sda3. I started up the ubuntu live cd, mounted partition3, opened the console and tried this command line which I found in a tutorial
grub-install --root-directory=/media/hda3 --recheck /dev/hda However I get the following error message:
mkdir: cannot create directory '/media/hda3/boot': No such file or directory
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Jan 30, 2011
I have windows7 installed in my laptop. I tried installing Redhat linux in it, and I was successful. But then I logged in with windows7 and deleted the partition in which I had installed redhat through computer management. Now my system doesnt boot with windows instead it boots with GRUB. Also to inform that the deleted linux partition I merged with Windows.
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May 4, 2009
Can anyone tell me how to make this script,( located in /etc/init.d/tomcat ) startup at boot time under the tomcat user and not the root user?
#!/bin/bash
# tomcatStartup Script for Tomcat
# chkconfig: 2345 20 80
# description: Tomcat Server basic start/shutdown script
# processname: tomcat
# pidfile: /var/run/tomcat.pid
[Code]...
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May 8, 2011
I am running ubuntu 10.4, windows 7, and I had ubuntu 10.10 on a single hard drive. I upgrade the 10.10 system to 11.4 and now my grub menu which is on the 10.4 system shows two windows and two 11.4 installations.
How can I clean this up? Also I have tried to start with the grub 1.99 on the 11.4 system and all I get is a black screen at startup. I am happy with grub on 10.4 except for the extra lines.
[Code]...
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Sep 5, 2011
When i boot my PC, i get this in my Fedora 16 distro. I have tried as following but none allowing me to boot anymore.
Grub loading.Welcome to GRUB!
error: file not found. Entering rescue mode...
grub rescue>
grub rescue> ls
(hd0) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1)
grub rescue> ls (hd0,gpt2)/
./ ../ lost+found/ memtest86+-4.20 grub2/ System.map-3.1.0-0.rc3.git0.0.fc16.i686 config 3.1.0.0.rc3.git0.0.fc16.i686 grub/ vmlinuz-3.1.0.0.rc3.git0.0.fc16.i686 elf-memtest86+-4.20 initramfs-3.1.0.0.rc3.git0.0.fc16.i686.img initramfs-3.1.0.0.rc4.git0.0.fc16.i686.img System.mpa-3.1.0.0.rc3.git0.0.fc16.i686 config-3.1.0.0.rc3.git0.0.fc16.i686 vmlinuz-3.1.0.0.rc3.git0.0.fc16.i686
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May 20, 2010
I have installed Fedora 12 on my HP laptop which has got a NVIDIA graphics card. I have got latest F12 kernel 2.6.32 as well as default kernel 2.6.31.I have installed Nvidia Proprietary Drivers and modified grub.conf file for 2.6.32 kernel saying blacklist nouvaue so that it can load NVIDIA drivers ...After that I am able to successfully boot into 2.6.32 kernel with Nvidia Proprietary Drivers.Everything seems to be fine .. But suddenly today when I tried to boot into F12 2.6.32 kernel I got the following error
Code:
No Root Device Found
Boot Failed, Sleeping Forever
[code]...
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May 6, 2010
I am having with CentOS5.4 and Pirut?The update system is telling me I have a Pirut update, but when I go to apply it, the system complains about dependency issues with rhn-setup-gnome. I have searched high and low for the solution to this but haven't found it yet.I have found some hacks, but I am hesitant on messing with the integrity of the system just to complete the update.
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Apr 17, 2010
I started another thread about this to get help booting into openSUSE after Fedora rewrote my bootloader and deleted all other entries. I managed to fix it but I never did find out why the following commands caused my system to boot to the grub shell instead of the grub menu.
Code:
grub
root (hd0,3)
setup (hd0)
quit
reboot
Can anyone explain to me why these commands caused my system to boot directly to a grub shell? It's as if there were no /boot/grub/menu.lst files for it to use, but after I got everything back to normal, the files were still there.
If it helps, this is how the drive was setup before and now, except Fedora was on /dev/sda4 and has since been deleted.
Code:
Device Boot Start End Blocks Id System
/dev/sda1 1 262 2104483+ 82 Linux swap / Solaris
/dev/sda2 263 13316 104856255 83 Linux
/dev/sda3 * 13317 14621 10482412+ 83 Linux
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Mar 2, 2011
I got two harddisks, sda and sdb. Is it possible to install Debian root into software raid partitions sda2 and sdb1 leaving all other partitions 'normal' (not-raid)? do partitions sda2 and sdb1 need to be exact same size and position?
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Jun 1, 2010
I'm a long time Linux user. Finally got around to upgrading my Fedora 11 system to Fedora 12 by using the 'preupgrade' tool. The upgrade appeared to go well (downloaded packages, rebooted into installer, etc). However, now that the upgrade is complete, I'm unable to boot my system.
Here's my configuration:
/dev/sda (80Gb)
200Mb /boot partition (ext3)
52Gb / partition (ext4 - managed as logical volume)
2Gb swap partition (managed as logical volume)
20Gb /spare partition (ext3 - managed as logical volume) .....
All worked fine under Fedora 11 for the last few months. Grub now presents me with 'Fedora' and 'Windows XP' boot options. The /boot/grub/menu.lst file is essentially the same as it was for Fedora 11, except for the different kernel versions, etc. The boot sequence shows the Fedora bubble (??) and gets about 80% full when the screen goes black and the message displayed is:
No root device found
Boot has failed, sleeping forever
If I boot Windows, all works fine.
Am able to boot using a SystemRescueCD disk. The disks all look okay and I can mount/modify all partitions, etc. The grub menu.lst file read as follows (sorry, typed in, not copied):
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.32.11-99.fc12.i686.PAE)
root (hd0,0) .....
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Nov 21, 2010
I have 2 Debian OS's and wanted to put Fedora next to it.
Install went ok, but after rebooting it says: "No root device found. Boot has failed, sleeping forever."
During install from the live CD I didn't "v" the boot (efi or something?) because I thought Grub would take care of everything.
Should I just reinstall again and choose the Fedora bootloader? Won't it mess up Grub?
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Apr 27, 2011
I used the ntfs-config utility to mount my windows drives automatically at startup. While doing so, I had my USB-HDD still attached, and after making changes and rebooting, it did something unknown I didn't expect and I cannot mount my USB-HDD again, and it gives me the following error message:
Error mounting: mount exited with exit code 1: helper failed with:
mount: only root can mount /dev/sdb1 on /media/MyUSBDrive
I did manage to open it somehow, but then all the data was erased apart from ~3 GiB [edit: it's got some kind of extra drive built-in which is mounted as a CD-ROM drive, and when I open that one first all the files are missing in the actual drive, otherwise I get the message above]. I don't know what information I should include here, but my fstab looks like this:
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
[code]....
This line in terminal:
sudo mount -t ntfs-3g /dev/sdb1 /media/sdb1
Gives:
fuse: failed to access mountpoint /media/sdb1: No such file or directory
What should I do to recover my files and fix the mount error? [edit: at the very least, how do I backup my files onto my internal HDD so I can format it and recover it in this manner]
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Jul 20, 2010
Whenever I try to boot my computer, GRUB (Version 2) says "File Not Found". It does this for all entries except the Memtest86+ entries, which work fine. I have tried reinstalling GRUB, but it still does the same thing.
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May 7, 2011
I did an upgrade and now getting grub error 15 file not found on boot, memtest runs ok. any help would be appreciated. system information is listed below:
Find /grub/stage1
hd(1,0)
Menu.lst
[code]....
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May 7, 2010
I have a Feadora 12 Live CD. It booted up fine on my 700 Mhz computer. I've since then put a new HDD in with which I intended to install Fedora on. But now i get this message
Quote:
No root device found. Boot has failed, sleeping forever
What does this mean? How do get the Live CD to boot?
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Feb 8, 2011
I downloaded fedora 14 64 image then created a bootable flash drive and put the image on the flash drive. I rebooted and tried booting from the flash drive and that's the message I received. What do I do?
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Jun 17, 2011
I don't know why its called "GRUB 2" while it is actually GRUB 1.98 or 1.99. Anyway.So here's the thing. Due to the fact that I am dual-booting Ubuntu + Windows XP, my GRUB menu would show up during boot with or without me holding down SHIFT. This takes several seconds. What I'd like to do is that GRUB does not show up at all during "normal" boot and only shows up when I hold down the SHIFT right after BIOS POST.
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Nov 23, 2009
I've built my own kernel and now boot.preload complains about the missing preloadtrace.ko kernel module.
Where can one find the source for this module?
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Jul 4, 2011
I've setup raid to my primary partition by starting up from an USB. Array was up&working. Now starting up from my HDD's, I get: error: file not found. grub rescue> what should I do here?
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