CentOS 5 :: Grub Doesn't Automatically Boot OS After Install, Hangs At Grub Prompt?
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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Jun 5, 2009
I've got myself the curious situation where, when I boot the system, I can get grub to start, but it always drops to the prompt.
I can run:configfile /grub/menu.lst
and this brings up the menu with no problems, and from there I can boot the system to either linux or windows. What I don't understand is why it wont go to the menu in the first place?As far as I can tell, grub/Kubuntu got confused when installing, as each of the hd#,# settings in the menu.lst have needed tweaking to let the system boot. (e.g. windows is actually hd0, but the original install had it at hd2. Likewise linux is on hd1, but the menu.lst had it at hd0). I've happily tweaked these to make the system boot, but would appreciate any help in convincing grub to actually load the menu without me having to use the prompt.
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Nov 9, 2009
I have read some stuff but none seemed to work such as putting default=saved and in the window (other) section putting savedefault. hmm I know I can just specify the number after default but that breaks when a new kernel is installed. so any way to always make windows the default choice (so my wife will stop moaning
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Jun 29, 2010
I installed opensuse 11.2 today on my external hard drive and everything is running great, but I want to see if I can make a modification to the way my computer boots. I share this computer with others and they are not going to be happy to have to wait for the boot menu to start when they turn on the computer in order to choose which OS to run (Especially since if they do not make a choice it auto runs opensuse after a few seconds).
What I would like is if opensuse can be "out of sight, out of mind" and only load when I put in the live cd and then choose to boot from my external...... is it possible to do this?I am not a computer wizard and do not work in the industry.
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Jun 5, 2011
I performed a clean install of Fedora 15 from DVD and it goes fine until the end when the install program says to reboot the computer. Once I do that, the computer hangs before Grub loads, i.e. just after all of the BIOS messages, so there isn't any error message to indicate what is wrong. I had no issues with Fedora 14.
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Aug 13, 2011
When I try to boot I only get to the grub rescue prompt doesn't matter if I try booting from ubuntu 11.04 cd windows 7 disc or the hard drive. At the moment ubuntu 11.04 should be installed although it gave me a ton of errors as I installed it and as soon as i restarted the computer i got this prompt.
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Feb 28, 2011
I am having trouble getting grub to automatically boot into ubuntu server. When I turn on my server the grub menu shows up and shows me the choices. They all work fine except that grub wont automatically select one. This wouldn't be too much of a problem but this is a headless server and I can't boot into ubuntu without a keyboard. I tried looking through the grub 2 documentation but nothing seemed to work when I edited the conf file.
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Feb 16, 2010
I'm having trouble booting a Dell PowerEdge 6650 Server running Suse 9 (RAID 5). Following the POST detection of firmware, processor, raid, etc., it displays:
------------
One logical drive found on host adapter
One logical drive handled by BIOS
GRUB _
------------
It will sit at the "GRUB _" prompt with a flashing cursor and will not boot to the OS.It's not a typical "grub>" prompt and I'm unable to type anything or ESC from it
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Jan 15, 2011
So I wanted to get rid of ubuntu 10.10 on my HP pavilion dv6 laptop as I wanted to make some hd space. Its a dual boot with windows 7. I deleted the ubuntu partition and expanded the windows partition to fill the whole hard drive again. When I restarted my laptop I got the "error: no such partition. Grub rescue>" message.
I tried inserting my ubuntu 10.10 boot cd but whenever I boot from the cd I get the exact same grub rescue error. Is it possible to remedy this situation from the error? I am currently unable to download a windows recovery cd so I'm stuck in the grub rescue page unless its possible to fix this mess from the error prompt.
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May 6, 2011
After certain system-wide changes, like kernels updates, I obtain grub prompt on restart. However, if I put the hard drive into another computer (b), it boots up fine. Since, however, I use the present computer (a) regularly, I only use b to purge and reinstall grub using the chroot method. However, doing so every time is time consuming; and I cannot change anything in the defaults and run update-grub without obtaining a grub prompt on restart. How do I fix this?
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Feb 6, 2010
I tried to install Ubuntu on an external drive, but it doesn't boot, but it installed GRUB on my main HD, and now I can't even boot Windows. I only get a "grub rescue" prompt. I need to remove GRUB. How to do it?
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Feb 26, 2010
I've been running openSuse 11.2 for a while on my notebook.Today I turned it off at work and came home. When I tried to turn it on, it boots, shows a black screen written 'GRUB' and then NOTHING. It doesn't complete the boot process.
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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 11, 2010
Two days ago I decided to migrate from Fedora to Ubuntu 10.04. On the Ubuntu install I chose to format the entire disk as I do not want a dual boot system. I have three disks and have set the bios to boot from dvd, then main disk, then 2nd disk, then any other bootable drive and coming from a working Fedora I know I have my "slaves" and "Master" pin positions on the disks set correctly.
When I try to boot the fresh install of Ubuntu I do not see any menu options, no boot image nothing, I get taken immediately to a grub command window and I dont know how to fix things from there. I have tried to fix things by booting into the "try before you 'buy'" thing on the installation cd and I can see that Ubuntu has been installed on the main disk, but all in all Im stuck.
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May 13, 2010
i have dual booted ubuntu with windows. but after a few days i realized that ubuntu was too slow for my system and then decided to uninstall it and planned on installing it later. So i deleted the partitions on which ubuntu was installed. I rebooted the system and the grub rescue promt appeared, i already knew the work around was to restore the windows MBR using the live cd i used to install ubuntu or the Windows installer. But the main problem is my DVD suddenly stopped working . So my question is, can i boot windows using the promt? is there any commands? or can i uninstall grub using the rescue promt?
My desktop has been down for more that two weeks
Ubuntu version: 10.04
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Jun 19, 2010
So I had Ubuntu Server installed and I decided to make some new partitions using gparted via a live usb of Ubuntu desktop. And so I think messed up pretty badly. Ubuntu Server won't boot and I get the following error followed by a grub rescue promt:
Code:Diskette drive 0 seek failure
error: file not found grub rescue >
To me, it seems like some boot files may be missing if not the whole system. After I made the partitions, the live USB of Ubuntu was still working fine until I rebooted.So here is the bigger issue, I figured I would just reinstall everything all over again, but instead I can't.
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Jun 30, 2010
upgrading my Karmic 9.10 to Lucid 10.4 I can't boot anymore to Linux only to Windows.My installation is a WUBI installation and I installed it on the only harddisk I have in the folder c:ubuntuNow when I boot I get a grub prompt and when I do LS I see hd0,msdos01 as partition.Now's I've tried to manual boot it by using the following commands from the ubuntu manual
set root=(loop0)
linux /vmlinuz root=/dev/sda1 loop=/ubuntu/disks/root.disk ro
after this command I get an error
[code]....
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Jun 7, 2011
I'm running Ubuntu within VMWare on a Macbook. I followed these steps [URL]... Recommended) to upgrade form 10.04 to 11.04, which actually upgraded to 10.10 first, and then a graphical upgrade brought me to the 11.04 upgrade, but then i ran into the problem where a grub> prompt appears when i start up the machine... nothing else happens. I found this thread [URL] which seemed similar to my problem, but the suggestions didn't work.
Code:
grub> ls
(hd0) (hd0,5) (hd0,1) (fd0)
grub> boot
error: no loaded kernel.
grub> linux
error: no kernel specified.
that's what I see. any way to resolve this without having to download the CD and start from scratch? It's grub 1.98, if that's important to know.
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Jun 20, 2011
I have installed BackTrack 5 and I have set GRUB up:
Code:
root (hd1,4)
setup (hd1)
However, the GRUB prompt appears at boot instead of the GRUB menu. However, when I boot from the Live USB, the GRUB menu works fine. Here are the contents of the grub.cfg:
Code:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
# .....
The reason I want the GRUB menu to show up of because I would like to dual-boot BackTrack 5 with Windows 7.
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Dec 5, 2010
I'm not sure what's going on with this install, but I started with a fresh install on a 250GB IDE disk, assigning /dev/hda1 to linux, and the rest (/dev/hda2) to swap. when it tries to boot.. I just get GRUB hang. Should I have installed a small FAT32 partition in the first sectors of the disk for the bootloader?
The bios in this machine is very old (Dell 410 precision) and Dell offers no updates, so I suspect this has something to do with how the old bios is trying to boot, but ?? not sure how to fix it. try lilo, or alternate bootloader???? Just looking for a fix to the boot problem. I would prefer to boot from the disk, booting from cd/floppy/pxe not so desirable.
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Jan 6, 2011
Just got done installing U 10.1 into my old Dell desktop. Since I'm pretty darn new at Linux, I'll do my best to explain. Upon selecting Ubuntu to boot, I get a 'grub>' prompt, much like C: in DOS. But, at this point, I haven't the slightest idea of what to do.
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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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Jan 9, 2011
Sometimes when my machine tries to boot ubuntu it works SOMETIMES, but most of the time it hangs on a certain driver/message. I've disabled the silent splash to show you guys where it freezes.
Quote:
Marking TSC unstable due to TSC halts
Switching to clocksource hpet
thermal LNXTHERM:01: registered as thermal_zone1
ACPI: Thermal Zone [T22] (67C)
[Code]....
And then it stops there. I think ATA_PIIX is some ubuntu ata driver, but I don't know why there since my hard-drive passes all the S.M.A.R.T tests.
Keep in mind it SOMETIMES, but not very often, boots.
Edit: This machine was used with Ubuntu 8.10 before, and possibly 9.04, but that was before they introduced Audio for Intel HDA's Sigmatel. This is also a clean install.
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Apr 17, 2011
I have a laptop with Windows 7, and about a week ago I installed Ubuntu 10.10 64-bit via LiLi USB creator. Worked beautifully, but I was having some issues with the brightness controls so I decided to get cute and upgrade to 11.04. So I downloaded the beta2 and used LiLi to make the USB (unsupported for that version of course) which used the same parameters as 10.10. I then tried to do a fresh install over the partition I had set aside for Ubuntu and had 10.10 installed on (~80 GB).
So in the installation itself, something got majorly screwed, and the entire system froze. Next thing I knew, I was rebooting and got the Grub Rescue prompt and no ability to load into either my old Ubuntu 10.10 or my new failed 11.04, or of course my Windows 7 partition either. The partition is obviously there, and as I only have one PC in my house, with no Windows 7 recovery discs, I currently cannot fix the mbr to just get my Windows back. I can of course get this in a couple days, but I'd like to be able to fix this without going to my parents.
[Code]....
Those are my partitions. /dev/sda3 is my Windows Partition, which I want to boot from. Only problem is, I'm not really sure where the computer is looking to find the boot record. I think it's from my fubarred /dev/sda4 partition which means it's basically looking nowhere. So I can't modify it to point to my Windows so I can just get back there.
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Jun 17, 2011
I had 250gb hard disk with dual boot, xp and ubuntu 10.10.Yesterday, i tried to upgarde my ubuntu 10 to 11 from a live cd....b4 doing so, i used a win software EasyBCD to fix the mbr but it didn't work properly..and i ignored it(my biggest mistake)and deleted the ubuntu partion from the windows device manager. It just displays "Booting from Live CD" for few minutes and again displyas the same above error.What should i do now?Its ok if i m not able to recover my data back...i hv sycnd my docs on the internet.
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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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Apr 20, 2010
HW config is: AMD Athlon 64 X2 5000+ Black Edition, MSI 785GTM-E45, 2X 1Gb Kingston HyperX PC2-8500. I have set up GRUB to dualboot openSUSE 11.2 and WindowsXP. Initially i had set up system with defaults: CPU@2600MHz (200X13) and therefore RAM@800MHz. Both openSUSE 11.2 and WindowsXP worked just fine. Memtest86 found no problems.
But after a while i decided to change this setup to: CPU@2500MHz (250X10) and therefore RAM@1000MHz, as it promised better overall performance. And now Windows still boots and works better then before. Memtest86 still can't find any problem. But openSUSE 11.2 hangs at boot. I've suspected cpufreq governor, but changing from Ondemand to Conservative in /sys/devices/system/cpu/cpu0/cpufreq doesn't help.
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Feb 18, 2011
I've recently tried to do a full install to a USB stick using a 10.04 cd.
2 things happen as I boot:
1. if Hdds are attached, boot hangs on "checking dmi pool data..."
2. if hdds not attached, "hdd error" scrolls across screen
boots normally w/o the usb stick. I've set up my partitions on usb stick as
1: fat32 2gb <<windows/storage
2: fat32 1.5gb << future persistent install
3: ext4 4gb << hoped-for full install
1 is the first partition so windows finds it nicely. Before install, i unplugged my hdds so that grub wouldn't get confused. I told the installer to put the full install on sda3 with no swap space. I checked (advanced button on summary page) that bootloader is being installed to the usb on dev/sda (sda since no other drives attached). This should put it in the MBR (i think?)
Seems like I pressed all the right buttons huh? Is there a way to diagnose grub and see what's wrong? is there a reason grub may not initialize properly from a usb drive?
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Jan 18, 2011
I had Ubuntu installed, i installed Debian and there was no dual boot. So i formated all the hard disk to install only Debian. It installed but at boot i get error: no such device and the grub rescue> prompt. i googled for a solution and nothing worked:
- i tryed reinstalling grub, not worked
- i did the windows cd fixmbr trick, not worked
- reinstalled debian with fixmbr the first step and nothing
- tryed deleting with dd the mbr, not worked
- reinstalled grub from debian rescue, not worked
what should i do? i can't access my computer? please tell me how should i fix it? the google guys will kill me because i put their servers on fire
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Jan 28, 2010
OpenSUSE is starting to drive me a bit nuts. Actually what I'm trying to do is simply install VMWare server on a recent as possible SUSE and run 2 virtual machines, both the same SUSE. Of course 11.2 32 bit doesn't run VMWare server 2 so it's back to 11.1. The trouble is, 11.1 won't install properly on my PC.
The install process, booted and installed from the 11.1 network install iso image on CD, runs fine. The PC reboots from hard disk and stops at the grub prompt. I've tried the auto-repair option and reinstalled it from scratch a second time always with the same results. It seems the root partition is hosed, and that's where my understanding hits its limits. Can anyone help?
Incidentally should anyone be able to advise on the VMWare conundrum I'd also be interested. Maybe in another thread...
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