Fedora :: Get A "grub>" Console At Startup And System Doesn't Boot
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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Feb 7, 2010
My software RAID setup is as follows.
/dev/md0 (made from sda1 and sdb1) RAID1 /boot partition
/dev/md1 (made from sda2, sdb2, and sdc2) RAID5 / partition
Earlier on I had some trouble with my sda drive, it dropped itself from both arrays, screwing up the mirroring of my two raid partitions participating in the /boot partition. I eventually got everything sorted out and back in sync. (I also have grub installed to MBR on both sda and sdb). Things are working fine regarding that, but since then I've had this issue:
During boot up, I'll get an error message that it could not mount my /boot partition (when fstab is set to either /dev/md0 or the UUID). It claims c9ab814c-47ea-492d-a3be-1eaa88d53477 does not exist!
My fstab:
Code:
[mark@mark-box ~]$ cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Wed Jan 20 16:34:41 2010
[code]....
As far as I know, it isn't neccessary for /boot to be mounted always, correct? Although, as I understand, I need to have it mounted whenever making kernel changes correct?
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Jan 26, 2010
I am setting up a system for students to use to run lab-based exams. On bootup, the system needs to download an encrypted file containing the exam files, and then ask for a decryption password.
I want to do this during system startup (before anyone logs in). But I am having trouble getting keyboard input at this point.
I've put a script in /etc/rc.d/rc5.d/S99examsetup along the following lines:
Code:
#!/bin/bash
echo -n "Enter password:"
read EXAMPW
echo "You gave me: $EXAMPW"
but it doesn't respond to keyboard input. I have tried appending "< /dev/console" but this also doesn't work; in fact if I insert 'tty' before the first 'echo', it tells me that /dev/console is the tty being used for input anyway.
Is there a way round this? I can use plymouth ask-for-password, but that doesn't seem very portable, and it interacts badly with the graphics driver on one of my machines.
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Mar 11, 2010
I'm brand new to Fedora. I ran the live cd and installed Fedora. I then installed OpenSUSE and Mint. When Mint formated the hard drive, Fedora wasn't in the graphic, even though sda1 was ext4 and sda3 was lvm2. When Mint rebotted, Mint and OpenSUSE were on the menu, but Fedora wasn't.
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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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Feb 18, 2012
My system doesn't boot anymore, when I turn on the laptop, instead of the normal grub screen, i get the following:
"error: file not found
Entering rescue mode...
grub rescue> _"
I tried also to make a bootable usb w/ unetbootin but all the distros failed to load w/ a syslinux boot error message so I really need to fix the existing debian installation to get access to my files i need for the university, it's debian stable (6.0.4) on hp mini 210 ....
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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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Jan 25, 2010
I It does not start when the system boots. The smbd daemon is present and there are no suspicious messages in the system log, dmesg or the samba logs. The nmb service *is* enabled at all of the relevant run levels and does start if I issue the command "service nmb start" as root after I log in. This particular box's networking is 802.11n via a usb port and is under the control of the network manager. I have another fedora 12 box with an internal intel 5100 802.11n card and it does not have this problem.
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Dec 18, 2010
I have freshly installed Xubuntu on my HP compaq nx9010 laptop and grub doesn't boot system. Only minimal BASH-like line scripting is supported. How can I fix it?
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Jan 4, 2011
Ubuntu 10.10 doesn't boot at all. The liveCD only boots once every like 30 attempts, installing from liveCD froze, but the Alternate CD worked and installed ubuntu. Now when I try to boot into it using GRUB, it freezes at the beginning of the boot process.With normal boot it freezes at line: Starting AppArmor profiles Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox.With recovery mode it freezes even before showing me anything
A little kinda like the liveCD, if I try like 30 times, it might manage to boot once in normal mode.That line keeps on repeating, the the xxx.xxx integer changes each time, and this goes on forever.I tried removing my floppy drive, but it didn't help.I tried to boot with fd0=noprobeThe one time it booted, when I restarted, it froze while trying to restart.
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May 7, 2011
I have a dual-boot setup with Windows 7 and Ubuntu 11.04. Each OS is installed on a separate partition of one hard drive. I read that installing Windows after installing Ubuntu wipes out Grub, so I made sure to install Windows first. Unfortunately, after completing the Ubuntu install and rebooting, I see no sign of the Grub menu. I followed several sets of instructions for reinstalling Grub, and after running grub-update, it appears that Windows 7 was added to Grub, and after examining the grub.cfg file, it appeared that that was the case. Despite appearing to be installed perfectly once inside Ubuntu, Grub doesn't show anything at startup. No matter what I try, I can't seem to make Grub appear, and now I can't get back to Windows 7. Am I missing something, or should I try a different bootloader?
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Jan 20, 2009
I am trying to boot kubutu from FC10's grub. FC10 is in MBR, installed kubuntu without grub. Is that a problem for me now? I mean, should I need to install kubutu grub in order to boot from FC10 grub? I tried with these methods but nothing works:
title Kubuntu 8.10 Linux
chainloader +1
title Kubuntu 8.10 Linux
[code]....
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Nov 16, 2010
I've recently installed a new graphic card after my old one started to go belly-up and it works nicely in X with twinview. The card have one VGA, one DVI and one HDMI. I have the monitor connected to the VGA and my projector connected to the DVI. However, when I boot the monitor (VGA) don't receive a signal. It is dead until X comes up (and when X comes up it does exactly what I want, it uses the VGA monitor as the main screen).
I had this setup on my old card to and it worked fine. Grub and boot console showed on both screens and I never had to tweak anything to make it do this.
how to enable the VGA outlet, either have boot enabled or only the VGA enabled (either way is fine by me but I really want to see Grub and the boot console on startup).
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Jun 14, 2011
It used to be with (old) grub you could hit a function key and add a runlevel option to boot a console, but I don't know how to do this here, wanting not to edit the grub config file, as seems the only apparent option: I'm trying to boot into SimplyMepis where there is no rescue menu option, so need the prompt?
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Jun 7, 2010
I have an HP Pavilion m7480n PC with Windows XP installed on the C-drive. I successfully installed FC 12 onto the spare USB drive. When I rebooted the PC all I got was a blinking underscore at the extreme upper left position of a totally black screen. After a bit of experimenting I found that if I hit the F1 key during the boot process, go into the BIOS setup, do nothing within the setup, and press ESC to get out of the setup then the PC will go back into the boot cycle a second time. During the second time however a small text message appears with words to the effect "Press any key to enter GRUB..." after which the GRUB splash screen comes up with the choice for FC 12 or "Other" (referring to Win XP). At that point I can boot into either one.
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Oct 12, 2010
I'm encountering an unusual problem with GRUB 2. Whenever I start up my system, my BIOS'es load and do their thing, and then hand the show over to GRUB, which is supposed to not appear or do anything because my GRUB countdown is set to 0, but instead I get two errors like this that appear for about 5 or 10 seconds (greatly delaying startup) and then Xubuntu, the first entry on my Grub menu, loads: (I set GRUB to automatically boot my first entry):
Code:
error: no suitable mode found
error: unknown command 'terminal'
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Mar 21, 2011
I have used CentOS for a while and have never run into this issue. I searched all over and didn't see a similar issue anywhere, I did an install of CentOS as a server (no GUI) with only the base. Partition is /boot ext3, size of 100MB. The rest of the drive is partitioned as / with ext3. This is being done on a CompactFlash card of 32GB in size. The BIOS sees it as an IDE drive.
When the install completes and the system reboots, the grub stops at the grub> prompt. There is no menu for OS options. If I do the following commands:
grub>root (hd0,0)
grub>kernel /vmlinuz-2.6.18-194.el5 root=LABEL=/
grub>initrd /initrd-2.6.18-194.el5.img
grub>boot
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Oct 13, 2010
I've just installed Fedora (F13) for the first time, on a new HDD, to give myself a dual-boot system. So currently I have:
So, at the appropriate stage in the install menu, there is an option for where to install GRUB, and a drop-down to choose which drive is the primary BIOS boot drive.
However, in both cases, no other drive except my new sdc is visible. So, I can install GRUB to MBR of sdc, or to first sector of boot partition - but no option to put it to my primary boot drive MBR on sda.
Likewise, in the GRUB configuration page, if I go to Add another OS, the only option it gives me is my new Fedora install. It doesn't list the Vista OS on sda at all.
The result is that I can boot to either OS by changing the boot drive priority in BIOS.
I guess my question is this:
- is this expected behaviour from the installer, meaning that I'll need to configure GRUB manually somehow? (gulp ) or
- did I do something wrong in the install process? or
- is this some weird bug manifesting itself?
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Mar 13, 2010
I know that these forums aren't M$ support forums, but any mention of Linux and open source there just ends up in "don't use Linux"-type replies, so i figured i should ask it here. I have a quad-boot setup (Win7x64-Win7x64-K9.10x64-K9.10x64). I am in the process of migrating this setup to another (bigger) HDD. The Win7 system partitions were cloned using 3rd paty imaging software, Linux system partitions were cloned directly (cat /dev/sda5 > /dev/sdb5), data partitions were freshly created and populated with files copied from old partitions.
As the hard drive is bigger than previous one, i decided to add a little more space to Win7 system partitions. So when creating new partitions, i left 5GB unallocated space between them in order to grow the partitions later. I cloned the new partitions, ran the chkdsk with all options on to make sure the resulting partition survived the migration, then checked if it is readable under Linux (it was), used KPartitioner to grow the partition to the new size, again booted into Win7 Recovery, ran chkdsk with all options on, removed bootloader and made a new one using bcdboot.
Now, my Linuxes boot OK (there was some wankery involved but nothing too serious), but neither of my two Win7 can. I checked the bootloader, fiddled with different settings (e.g. removed setting the root by UUID), even tried to manually boot it from commandline - to no avail. After "chainloader +1" and "boot" it just does nothing. No error messages, nothing at all - the console screen doesn't even clear.
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Dec 14, 2010
i just upgraded to the latest nvidia 8 series driver, i downloaded from the nvidia site. After i installed the driver, i reboot and it booted into the console login screen with no GUI. how do i get back into the GUI.
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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 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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Apr 5, 2011
I'm trying to help my dad, who's recently got a computer that had Ubuntu 10.10 preinstalled. After some problems while I wasn't in a position to help out, I think a reinstallation is necessary. But when I make a USB drive to install it from, it only has .exe files, and nothing Ubuntu can use, so it doesn't boot on startup (even though it's set to boot from USB first) and it can't be run later either. This happens when I download the ISO from the main download page on the Ubuntu website, so is there a link to download one without Windows files?
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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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Oct 21, 2009
Why my mouse doesn't work in console?
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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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Apr 22, 2011
I tried to update one of my home machines with a fresh install. This is far from new to me so I did not expect any problem. But I was proven wrong. First: did install the system as usual. First anomaly: system blocked during the install process but did restart it flawlessly one I tried to eject the DVD from the player. It needed actually that intervention to retake working. It then went to install and froze during the first system start. I rebooted with failsafe settings, it then correctly configured. I reached a beautiful desktop. I performed the updates from the update repository and I joined the nvidia proprietary driver repository (which updated to the G02 driver).
I then rebooted the machine and now I am in trouble. In normal mode the system (dual boot Opensuse, XP) does not boot at all and freezes immediately after hitting enter as before. In safe mode it goes further but does not reach X anymore. It blocks with the following line statement: "system console stolen at line 266". I then tried "startx". But the system goes into a scrolling loop that does not allow me to read the output. how to get at least the error message of the loop? I read some line passing by that the system might have an X11 authorization problem.
Athlon Phenom X4 905e
Nividea G7600 graphic card
Former system installed and running flawlessly: 11.1
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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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Jan 17, 2009
I am trying to install my laptop in a triple-boot configuration with Fedora 10, Windows XP and Windows 7 beta. I did already installed them in that order. This is how it is layed out on the harddisk:
Now i want to use grub to present a menu at boot so i can select an OS. Because I installed XP last it boots straight into XP. I've understood i should be able to do the following:
All goes well until the last step (grub-install). It gives an error stating that /dev/sda doesn't exist, which is correct; It doesn't. I do have the "device" listed outside of the chrooted environment.
My question is: How do I get /dev/sda available in my chrooted environment?
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Feb 1, 2010
I have a laptop with Karmic Koala in dual boot with Lenny. I need to reinstall Lenny however if I do that I will loose Karmic Koala in the grub screen because of the new version of grub that comes with Karmic Koala. Which means that I will need to reinstall Karmic Koala after Lenny so that they both appear in the grub screen at startup. If I reinstall only Lenny is it possible to use Gparted to change the boot back to Karmic Koala and have them both in the grub screen again? Or is there another way around it?
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