Red Hat :: System Won't Boot - Just Says GRUB And Restarts / Sort It?
Jan 20, 2009
I updated a RHEL 4 system today using up2date and when the system rebooted it just said "GRUB" on the screen for a few seconds and then restarted (and did this over and over and over).
I booted from a rescue CD and was going to reinstall grub.
Here's the kicker: this machine has two hard drives configured with software RAID 1, and I don't want to screw up the mirroring by tinkering with grub.
/etc/fstab shows that /boot is at /dev/md0 but "/sbin/grub-install /dev/md0" doesn't work ("/dev/md0 does not have any corresponding BIOS drive").
I have a bad feeling that if I do "/sbin/grub-install /dev/hda1" that I'm going to screw up my mirroring.
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Dec 16, 2010
I followed a tutorial to install XP across my entire HDD. I installed Ubuntu 10.10 "Alongside another OS". Ubuntu loads fine, but when trying to load XP, the boot screen shows up, but then the computer restarts and returns to the GRUB menu.
I saw some threads on this site and tried to type: sudo gedit /boot/grub/menu.lst
In the terminal. It returned a blank text document so I'm not sure if that information was outdated. I then typed: sudo fdisk -l
And got this:
Not sure what any of this means, but I sure hope someone else does. I would say forget XP, but it's hard to let go of some of the games and software I use. I appreciate any responses, thank you.
I tried to format the table as it appeared, but the forum corrected the extra spaces.
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May 6, 2011
I just installed the newest version of Xubuntu using the LiveCD, I chose to install it alongside my current installation of Windows 7, everything went well it seemed, but now when I choose Windows 7 under the GRUB menu it just restarts my system and then takes me back to the grub menu, Xubuntu works fine though and boots fine, I tried sudo update-grub, didn't fix it.Heres the boot info from a script I found, but being rather poor when it comes to diagnosing Linux, I figured it'd be best to post this and see
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
[code]....
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Jun 26, 2011
I don't really have any Linux experience. But I wanted to try it out. Now I'm afraid I did not set this up properly. Grub gives me 3 options:
Fedora (2.6.38.8-32.fc15.x86_64)
Fedora (2.6.38.8-26.rc1.fc15.x86_64)
Other
When I select <Other> to boot into windows... it starts to try to boot... but then flashes a quick blue screen & restarts. I tried to boot into Window's normal mode, safe mode, and command line... all just restart fdisk -l gives the following:
[Code]....
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Jun 11, 2010
I recently tried to clone a RHEL 4 system and migrate it to some different hardware (IBM Blade to an IBM x3650M2 rack mount). I'm getting an error when it tries to boot up. It gets past the grub part, but then errors out quickly with this error code...
I've done this before, but the other system I migrated didn't have a separate "/" and "/boot" partition. I think this may be why it's having an issue. It seems like "/boot" is actually /dev/sda1 and "/" is /dev/sda2 (from booting up RHEL rescue disk). I've tried changing fstab and grub.conf, but I think I may be missing something.
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Jun 6, 2010
I have Vista 32bit dual booting with Ubuntu 10.04
I want Vista to be my default OS so I installed Start-Up Manager in Ubuntu and set Vista as the default OS and changed the timeout to 0 seconds.
By doing this, I thought that it would always boot to Vista as if nothing else was installed (which is what I wanted it to act like) and then whenever I wanted to boot to Ubuntu I would hold down 'Shift' to load the Grub2 menu and select Ubuntu.
The problem is, every time I boot up the Grub menu won't load. I tried holding 'Shift' down, tapping repeatedly, but all that comes up is something like "Grub Menu...Loading" in the top left corner and then it boots to Vista.
I just need a way to boot back to Ubuntu to change the timeout.
Thanks.
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Sep 1, 2011
First, I know there are numerous threads on grub errors but I have tried all possible solutions and that's why I'm here. My issue is that I'm not able to boot from the grub prompt as described for installing grub from a LiveCD https://help.ubuntu.com/community/Gr...0from%20LiveCD. I can see grub is installed but is missing the kernal and other files. code...
I ran the boot_info script and the output is attached. From what I can tell it cannot even detect an OS being installed, but I've kept everything up to date and never had any issues. Everything was fine yesterday and now this. Also, I tried the Boot Repair CD and that did not work.
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Jul 11, 2011
My laptop restarts itself frequently - full restart back through the bios screen to the bootloader, not just logging-out. It happens in Ubuntu 11.04 (32 bit and 64 bit), the Gnome 3 live CD from [URL] (the Fedora based one, run from a USB stick) and even from the GRUB bootloader menu. I have tried two different harddrives and two sets of RAM (all combinations) and the restarts still occur. They even happen when the hard drive is removed and Ubuntu 11.04 is booted from USB. Windows XP Media Center is also installed on the laptop too but the restarts have never happened when in Windows (even though they can happen in the bootloader!).
The memtest86 GRUB menu entry loads the blue screen with the title and memory info etc. but it seems to stop there and I don't think it's actually doing any tests, so I haven't been able to do a memory test. In Windows I have not installed any wireless network or 4-in-1 card reader drivers (among others probably), which is a possible reason why it does not restart in Windows, although I don't think GRUB has drivers for either of these devices either. My laptop is an Acer Aspire 5630 with the following hardware:
CPU: Intel Core 2 5500 (1.66Ghz)
Memory: 2GiB DDR2
Graphics: Intel 945 (integrated)
Audio: Intel HD audio with Realtek codec
Wireless: Intel PRO/Wireless 3945ABG [Golan]
It does seem that sometimes the restarts are caused by touching the keyboard (i.e. they happen exactly when I hit a key) but they also sometimes occur when I am not even touching the computer at all.
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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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May 4, 2010
I installed Lucid Lynx some days ago. Whenever I try to access Vista from GRUB, the computer restarts. I haven't changed anything about how the computer starts.
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Feb 16, 2011
I am having a re-occuring problem with Grub. The problem seems to occur about once every 15 or so times that I start up. Basically, it gets past the Samsung branded screen but before it goes to the Grub screen, the computer will restart - it just continually gets to this point and restarts until I shut down with the power button. The problem is easily fixed by re-installing Grub using an ubuntu CD. Things will then run fine for about a week and the same problem will occur.
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May 10, 2011
I this problem where my laptop hangs up or suddenly restarts. Currently Iam using Fedora 15 but I had this problem when I was using fedora 13. I upgraded to 15 thinking that may be its been resolved in 15.
I have searched for possible solutions. my system software is up-to-date including the kernel which I took from the test repositeries..
I checked /var/log/messages for possible clues but I have not been able to figure it out. Below is the output of /var/log/messages files just before the laptop freezes or restarts.. so far the below output has been consistent with the event...
Code:
May 10 22:44:11 localhost ntpd[1622]: Listening on routing socket on fd #22 for interface updates
May 10 22:44:11 localhost ntpd[1622]: 0.0.0.0 c016 06 restart
May 10 22:44:11 localhost ntpd[1622]: 0.0.0.0 c012 02 freq_set kernel 16.857 PPM
May 10 22:44:18 localhost ntpd[1622]: 0.0.0.0 c61c 0c clock_step +0.160289 s
May 10 22:44:19 localhost ntpd[1622]: 0.0.0.0 c614 04 freq_mode
[Code]....
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Jan 28, 2011
I've installed Ubuntu on my new desktop alongside Windows 7 (each OS is on a separate drive), I seem to have run into a small problem. Let me start with what I did:
- Unplugged 1TB drive from the PSU, BIOS was not seeing my formatted (and thus empty) 500GB drive and I couldn't put it into the boot order at all with the 1TB turned on.
- Loaded up the boot CD and was able to install Ubuntu 10.1 on my 500GB drive.
- Did a bit of configuring, shut my PC off and plugged my 1TB (with Windows 7) drive back in. I tried to see if I could now see my Ubuntu drive in BIOS but nothing is there - just the Windows drive is in the list of available drives to boot from (along with DVD-ROM and USB).
This is where I've run into my problem. What I want is to have a nice GRUB boot menu at the start like any other dual-boot system but just have the two operating systems on separate drives altogether.I did it this way because I was having issues with the advanced partition menu on the boot CD so just went ahead and followed the KISS method by unplugging the Windows drive.
I was told by a friend that if I put my Ubuntu drive into the first position in my boot order and the Windows drive in the second, then I could boot into Ubuntu and run a GRUB update command (he told me to google it) and that would create the necessary GRUB that had the entries for Windows 7 and Ubuntu.Both operating systems are 64-bit, I imagine that might make a difference in whatever help you guys can offer me. I love the hell out of both OS's and want to be able to use them interchangeably.
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Mar 25, 2010
I have Lenny, and Jaunty Jackaope installed on the same hdd. Jaunty Jackaope was installed 2nd so it has control of grub (I don't know if that is the correct expression) I want to remove Jaunty Jackalope however I know from past experience that after I do this I will no longer be able to boot into Lenny as I will get a grub error at startup. How to I give boot/grub to Lenny so that I can remove the other operating system?
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Dec 16, 2010
This is the third time I try unsuccessfully to install Debian as a second OS on a hard drive. When it gets to the end of the installation process the installer asks whether I want to go ahead with the Grub Boot Loader, I choose yes. The end result is however that I can't boot that partition within the hard drive -- i.e., Debian. Can someone tell me what is going on? Should I not use the Grub Boot Loader when I have more than one operating system on a machine? Should I not install Grub on the Master Boot Record (MBR)?
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May 10, 2011
I'm currently on a work trip with my Asus G72GX laptop for non-work use (I'm posting from my work laptop). Yesterday, I accidentally booted into my laptop's recovery partition (from the Grub2 bootloader). Before I realized that that's what was happening, it booted into some kind of recovery program which ended up in an error. I restarted the laptop and couldn't get into the bootloader anymore. Now, the only thing that comes up is an error -- "error: unknown filesystem." Below that, it gives me the "grub rescue>" prompt. Most of the commands that sites list for grub rescue only return "Unknown command". ls works and lists all of my partitions: (hd0), (hd0,msdos, (hd0,msdos7), etc. down to msdos1. When I "ls (hd0,msdos" (etc, etc) it says "error: unknown filesystem."
I then started looking into booting from a Live Ubuntu USB drive. I've tried 11.04 and 10.04 now and they both do the same thing. I put them on an 8GB flash drive (only 1 at any given time) using Universal USB Installer and was able to get to the Ubuntu menu (Run Ubuntu from this USB, Install Ubuntu on a Hard Disk, etc.) If I try either "Run Ubuntu" or "Install Ubuntu", the screen flickers and comes right back to that menu.BTW, my 3 operating systems are: Windows 7 HP 64-bit, Mythbuntu 10.10 64-bit, and Windows XP 32-bit. Laptop hardware: Core 2 Duo P8700 2.53GHz, 6GB RAM, Nvidia 8800 GTX video card.
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Jun 17, 2010
this forum and also to OpenSuse. Wn i shutdown my sys, it restarts rather than shutting down. Please help me out.
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Feb 8, 2011
My computer is set up as a dual boot into windows 7 and ubuntu, but since I installed the latest updates, every time hit enter to boot into ubuntu the computer just restarts. It doesn't even go into the ubuntu grub loader like it usually does
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Jul 1, 2010
Since I have installed fedora 13 in my system (HP pavilion 1506tx) I rtsam getting this error every time my system starts/ restarts. I don't know how to correct this error. Here is the message displayed in Automatic Bug reporting tool
------------[ cut here ]------------
WARNING: at drivers/pci/dmar.c:647 check_zero_address+0x7d/0x191()
Hardware name: HP Pavilion dv4 Notebook PC
Your BIOS is broken; DMAR reported at address zero!
BIOS vendor: Hewlett-Packard; Ver: F.55; Product Version: 039B140000241210100020000
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.33.5-124.fc13.i686 #1
Call Trace:
[<c0436df5>] warn_slowpath_common+0x65/0x7c
[<c09d92a3>] ? check_zero_address+0x7d/0x191
[<c0436e40>] warn_slowpath_fmt+0x24/0x27
[<c09d92a3>] check_zero_address+0x7d/0x191
[<c05edc18>] ? acpi_get_table_with_size+0x53/0xa1
[<c09d93c8>] detect_intel_iommu+0x11/0x69
[<c09bd888>] pci_iommu_alloc+0x8/0xa
[<c09ca721>] mem_init+0xe/0x245
[<c09b776a>] start_kernel+0x1bf/0x34b
[<c09b73e7>] ? unknown_bootoption+0x0/0x18e
[<c09b7099>] i386_start_kernel+0x99/0xa0
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Nov 1, 2010
I had perfectly working lucid on my laptop (64 bit) which I installed from a live CD not wubi. I tried to upgrade with update-manager and everythingooked fine until I accidentally updated compiz from the cache before everything else finished. this made compiz stop working completely, which also broke metacity. I tried to fix this with multiple things: Downgrading compiz (failed to apply changes), sudo apt-get install -f, finishing the upgrade (see the following).
during the applying changes stage of the upgrade i got an error with almost every package it tried to apply (sorry I don't know what, but it said something about 'this package failed to upgrade and may be left in a broken state'. I let the upgrade finished and at the end it said 'Upgrade Finished but not all changes were successfully applied' and I shut down the computer. when I turned it back on everything looked fine until I past to the usplash screen. Then the screen went black, a bunch of error messages scrolled by too fast to read, and my system rebooted.
I tried recovery mode and another kernel choice at grub but all did basically the same thing. Windows still works as much as it usually does but I want my ubuntu back! I am OK with doing a fresh install if I can somehow recover a small amount of my data in my home folder. If you can tell me how to get into ubuntu from windows or something that would be great but I also need to know how to decrypt my home folder (I used the encrypting option in the installer)
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Jan 31, 2011
I've recently installed Fedora 14 (x86_64) on my Alienware m15x laptop which has a NVIDIA GTX 260m onboard. Now I have followed leigh123linux's guide to installing those drivers on F14. The installation is a success and everything seems to be in working order, until the system randomly logs the user out and/or restarts the session with no warning. The screen goes black and the nvidia logo appears and then its back to the login screen again. This can happen many times with no apparent stop insight. This does not happen with the default F14 drivers that come with the installation, I have tried several re installations of the Fedora OS and several re installations of the NVIDIA driver, i still have the same problems.
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Jan 8, 2010
Grub won't automatically boot my system... the timer is set to 1 second and the default OS is chosen, it just sits there completely without a timer!
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Apr 7, 2010
I know this is an issue that has been brought up before and the solution I found is to recover Grub through the live CD [URL] However, this problem has occurred multiple times for me now. First time I thought it was just a freak error but it's happened multiple times within a short period of time (couple times this week) so I just wanted to get input on what's causing this and how I can fix it permanently. I've recently installed Ubuntu and I'm dual booting Ubuntu 9.10/Windows 7 Ultimate 64bit.
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May 12, 2011
I'm booting Gentoo off of a usb-stick. This has been working previously but now when I try to boot my stick it gets as far as executing the initramfs init script then restarts.The last two lines of my initramfs/init are:
Code:
echo "finished initramfs."
exec switch_root /new-root /sbin/init
[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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Jun 8, 2010
I just installed 10.04 to the second hard drive on my system, and stupidly installed the new grub to the first drive, which has my standard 9.10 OS on it. Now I cannot boot into my original system. All of the files across both disks are still intact and mountable. I'm not new to linux in general, but I'm not exactly knowledgeable, either...
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Oct 22, 2010
Triple-boot system can't find grub/defaults/grub file. Debian lenny on hda2, winsxp hda3, ubuntu10.10 hdb2. All 3 accessible(working). I had to reinstall all Oses, winsxp 2nd after installing Ubuntu this time Grub2 detected and has each os running. I've so far looked at the Debian grubmenu.lst which shows that winsxp is listed but not Ubuntu even though I can boot Ubuntu. I'm sure that grub2 is in control because at boot it shows grub 1.98 also the os selection looks like the 1 in grub2
I examined my partitions using gparted it shows that winsxp is labeled as boot lba. That was sda3.
1. There's grub legacy in debian, ? in winsxp, grub2 in Ubuntu. where did grub2 go? It's menu is not in debian.
2. How do I find it or should I just change the grub that is within Debian to Grub2 & make it the system default and it's at the beginning of the system.
At the time of Ubuntu installation I didn't have access to Debian, due to wins install. So wins partition had boot flag.
3. Is there a way to enable grub legacy and add Ubuntu entries to it?
4. Is it as easy as changing the boot flags to Grub in Debian partition at beginning of hda?
5. Why can't I see default grub file on this installation of Ubuntu?
On this 1 as well as the other I have root login and can't see it.
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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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Apr 3, 2010
I've had to give up trying to install linux. It just won't work on my machine, a Presario 6370us that has been upgraded over the years such that it is not compatible with linux, apparently. (You can read my travails elsewhere on this board; thanks very much to all who tried to help.)
Now, how do I remove the GRUB boot loader from my system? I need the system to boot directly to Windows XP.
I can't start linux in any way, shape, or form, so I need to either edit GRUB inside the GRUB environment itself, or to do so from Windows.
Ideally, I'd like to remove GRUB entirely. Failing that, I'd like to edit the GRUB config file so that only Windows is an option. Failing that, I need to make Windows the default OS.
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Jan 24, 2010
I am currently rebuilding a couple laptops and a desktop to dual boot Windows and Suse 11.2. Windows is installed on partition 1. On the laptops, the build goes fine and dual boot with grub is OK. No issues. But on the desktop, the exact same build (after all the on-line updates, etc) fails with "Operating system not found" on the final (and first) boot. It seems that the Suse 11.2 build is somehow resetting the active partition and the boot does not see grub or Windows. When I reset partition #1 back to "active, only Windows loads. So I guess I need to fix this by reinstalling grub. Or use the Windows boot loader.
(1) Where is grub located on my system?
(2) What partiton is the Linux master Boot record If I wanted to use the Windows boot loader and do the following command to grab the 512 bytes I need:
dd if=/dev/sna? of=grub.bin bs=512 count=1
My partition layout is below. This is output from gdisk.exe in DOS7. It's an 80gig drive.
1 = Windows-7
2 = /boot
3 = swap
[code]....
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