Ubuntu :: Grub Reboots Computer Before Starting OS?
Jun 12, 2011
This is a strange one. Ever since upgrading to 11.04 64-bit, I've had this problem and I've just been dealing with it...
After the machine posts, grub presents itself. Before upgrading, it would timeout after 5 seconds and boot the first/default entry. Since the upgrade, it no longer automatically boots the first entry. In addition, it reboots the computer after selecting the first entry. After it comes back up to grub, you select the first option and this time it boots.
I'm pulling my hair out on this one. I'm by no means a Linux expert, but I've been running Ubuntu for a few years now and this is one of the first issues that I've been unable to work through.
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Feb 20, 2011
I've installed Ubuntu inside Windows 7 with the Ubuntu Windows installer. I have previously had problems with booting Ubuntu, but it always got to GRUB at least. Now it shows the Windows bootloader, I select Ubuntu and the computer just reboots.
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Feb 15, 2010
Just installed Ubuntu 9.10 and had windows 7 ultimate installed prior to installing Ubuntu. When I installed Ubuntu I partitioned off a section of the HDD that windows is installed on and installed to that new partition. Ubuntu boots and works great but ever since installed if I select windows to boot it just reboot PC all together. Tried making windows default and it booted windows once then went back to normal. I tried to follow suggestions on different post about running "sudo grub" but it is not a command according to my terminal.
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Mar 5, 2010
I recently installed Ubuntu, my first experience with Linux, but when I try to boot a previously installed Windows 7 from grub, it reboots the system back to the grub screen. I can boot to Ubuntu.
I've been searching for and working on possible solutions for several days to no avail. There are some similar posts on various forums but few quite like mine, and solutions I've read haven't solved my problem. I tried booting to the windows 7 repair disk and selecting the repair start up option, but the message tells me no problems were found.
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Apr 17, 2009
I boot linux from a usb drive so I can carry my distro wherever I go - I've been doing it for quite some time now and it's always worked wonderfully. Problem: This morning my little cousin unplugged the computer WHILE I was booting into linux. Power loss has happened before, but with no ill effects. This time however, it's decided it won't boot. The screen clears, and just as GRUB is about to load, it freezes and the computer reboots over and over.
I booted to a LiveCD of Ubuntu to try and fsck the drive, but it won't mount the volume. I've worked with this install so long, and have customized it so much I **really** don't want to do a reinstall.. What can I do?
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Oct 25, 2010
A weird problem arose a few months ago in my box and has plagued me ever since: the PC immediately reboots whenever I try to suspend or hibernate Ubuntu. It's actually instantaneous, as if I pushed the reset button.Way more days into googling than I wished I had to, I have tried just about every solution related to suspension/hibernation problems,but none really applies to the exact situation I'm experiencing, since most are about being unable to resume after suspending/hibernating, and in my case it seems the system is instantly killed and therefore doesn't even start said operation.
After rebooting, applications behave exactly as when the PC is hard-reset, which I think is an indication that running processes aren't being properly terminated and the system is just going down abruptly (if the less-than-a-second it takes to go down and restart the boot sequence isn't obvious enough).Before you ask:
everything was working fine before;
upgraded to Maverick but the problem remained;
every suspend/hibernate method that I know of (GUI, CLI) does the same;
can't easily test in another OS since I only have Ubuntu installed (no dual-boot or the like);swap partition is larger than RAM; /etc/initramfs-tools/conf.d/resume is pointing to the correct swap UUID;
tried several SUSPEND_METHODS and video-related options in /etc/default/acpi-support;
enabling/disabling the acpid and acpi_support services in BUM (Boot-Up Manager) has no effect;
enabling/disabling BIOS STR (Suspend-To-RAM)-related options has no effect;
unsetting NvAGP or setting it to 1 in /etc/X11/xorg.conf has no effect;
adding/removing the agpgart and intel_agp modules to /etc/modprobe.d/blacklist.conf has no effect;
installing the hibernate package has no effect;
not sure what I'd be looking for, but nothing strikes me as relevant in /var/log/messages.
This is really strange. May it be a hardware failure of some sort? What else can I try to work this one out or at the very least understand what's happening?
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Feb 25, 2011
I just installed Xubuntu 10.10. It indicated 202 updates, so I started to update and next thing I notice is that the computer is frozen on probably the screensaver. I reboot the computer by pressing the reset-button (ctl-alt-del doesn't work) and after reboot it flashes the update-tool processing a kernel-update. Then it flashes back to login screen and hangs. Another reboot I only get to login screen and it hangs. When booting into recovery mode, it hangs on
EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
Begin: Running /scripts/init-bottom ... done.
done.
Begin: Running /scripts/init-bottom ... done
(blinking cursor)
how to go on and get my system running?
HW: 2GHz, 80 GB disk, 1 GB RAM
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Aug 12, 2015
I just converted a movie from mp4 to avi format and was away from the computer during the conversion. When I came back, the file had been properly converted but the computer was at the login prompt. I assume that it rebooted when the conversion was complete. Is this normal behavior? I don't see any avconv 'switches' to prevent that from happening.
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Feb 15, 2011
I downloaded and installed Ubuntu desktop on 9/26/10. Not sure what version that would be but that is my download date. Running a dual boot XP 32bit/Ubuntu 64bitNo problems at all so far and I've been keeping up with updates manager. Two days ago I went start my machine and chose Ubuntu from the OS selection screen as usual. The only thing that shows up on the next screen (grub menu I believe?) is "HD (0,0) NTFS5" for about 1.5 sec and then reboots.
Windows boots and runs fine. They are both installed on the same physical drive. Not sure what else to search for or include for information. I've tried searching the forums but not sure what nomenclature to use.Trying to avoid reinstalling. p.s. I knew I was enjoying Ubuntu but didn't realize how much until I was forced back to using just XP.
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Sep 5, 2010
I am using Ubuntu Studio 10.04 LTS and I am experiencing the following problem: my computer loses its Internet connection and appears to require several reboots to re-establish an Internet connection.
As suggested on a similar post relating to wireless connection loss, I supply the output of sudo lshw -C network
*-network
description: Ethernet interface
product: NetLink BCM5789 Gigabit Ethernet PCI Express
vendor: Broadcom Corporation
[Code].....
Note that I have REMOVED my wireless card in case there was some kind of hardware conflict or failure. I am using a wired connection through a Linksys WRT54G router that is supplying an Internet connection to another computer and an IP phone without any problem.
When I run the command network-admin (or select System > Administration > Network) I can see only 3 tabs (General, DNS and Hosts) It seems that the Connections tab has disappeared (and I believe this happened when I upgraded from Ubuntu 9/Karmic Koala). If I click Help it shows me that there should be 4 tabs, not 3.
The connection dropping began prior to my decision to upgrade. In fact it took several attempts to complete the upgrade. Should I attempt to re-install the upgrade? I am not sure how to do it without losing my connection. When I visit System > Administration > Update Manager, I am informed that my system is up to date.
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Nov 11, 2010
I've got a computer i'm trying to VNC to.
The problem is that when the computer starts up/reboots it doesn't "Unlock the system keyring"(I think that's what it said).
When I try and attempt to connect to the computer it asks for the VNC password(as per normal) but fails to connect after that.
The reason is that the Ubuntu computer prompts for the user's password to unlock the system(locally).
What I want is to be able to turn on the computer without having to worry about entering the password. I've had it running fine on 8.04 yet the newer version seems to be annoying :s
The system is set to automatically login on startup too.
I've tried this: "delete the keyring folder under /home/XXXX/.gnome2" then setup remote desktop again. But that hasn't worked either. I still have to enter the password to a keyring
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May 14, 2010
when I select Vista/Longhorn from my grub list, it shows a black screen, then shows GRUB again. I recently had to reset my menu.lst, so I'm not sure if the settings for the windows option are correct. This is my /boot/grub/menu.lst:
Code:
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
[code]....
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Jan 9, 2011
Last night I rebooted my desktop and it failed as in it just kept resetting after the bios post...so I changed my boot drive which gave me a "no bootable drive found" error(this confirms hdd fault) thee I booted a live cd and checked my partitions
They are as follows
sda1 - boot(ntfs)
sda2 - windows(ntfs)
sda3 - swap
sda4 - ubuntu(ext4)
I tried to mount sda4 to reinstall grub but it failed...says the partition is corrupt sda2 has no problems and I made a backup for it now the problem is how do I perform a disk check on sda4 and how do I get my system up and running again? I dont want to reinstall!
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May 14, 2011
I just installed 5.6 using the x86_64 netinstall - all appeared to go well, albeit a little slowly. At the end of the install i rebooted the machine but CentOS won't load. If I select the CentOS option from grub (only other option is 'other') the machine instantly reboots.
Only options selected for install where 'server' and 'server gui'.
Editing the CentOS options shows the following but I've no idea whether this is correct or not (assume it is):
root (hd1,0)
kernel /vmlinuz-2.6.18-238.e15 ro root=/dev/VolGroup00/LogVol00 rhgb initrd /initrd-2.6.18-238.e15.img
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Dec 3, 2010
Last week my computer crashed while using Adobe flashplayer, when I restarted my computer I get a black screen with an error message:
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Jun 2, 2010
I want to mount partitions automatically after starting computer...currently i hav to click on the partitions and mount them.
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Sep 20, 2010
This puzzling message pops up during startup and forces a reboot:
Code:
Checking root filesystems. fsck.ext3: No such file or directory while trying to open /dev/hda1 The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem, then the superblock is corrupt. This was typed in not copied.
The laptop is running gentoo linux. Here is the fstab file and instead of having "boot" on its own partition I decided to have both "/" and "boot" in the same partition. This has never caused any problems before so I don't understand what the problem is now.
[Code]...
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Mar 6, 2010
Where are temporary internet files stored so as that I can delete them. A second point is that I have had Ubuntu for a few months now and my computer is starting to slow down.
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Mar 31, 2011
I have openSUSE 11.4 KDE 64 bit. openSUSE is really great, but I hate the freeze when I startup my computer. Desktop appears but I cannot do anything. This takes approximately 20 to 30 seconds and than my plasmoid-networkmanager shows network is up. As from this moment freeze is over.
I already tried to switch off ipv6 and put nomodeset in grub, though this is not helping. Does anyone have any idea what this is and how I can solve this?
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Aug 14, 2010
Last night, I formatted my laptop(Asus w5f). And I installed win7 Home Premium. Then I installed Ubuntu 10.04. After installation, I restarted the computer. When I choose win7 at grub, comp. restarted itself. But When I choose Ubuntu, started properly. Now, grub is not starting win7. At ubuntu, I can see windows disk and files. But win7 doesn't start.
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May 11, 2011
The Grub Windows XP selection only gets "Starting ..." and then, nothing. Ran boot info (ref. below)
Updated Grub:
$ sudo update-grub
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.32-31-generic
Found kernel: /boot/vmlinuz-2.6.32-30-generic
Found kernel: /boot/vmlinuz-2.6.31-23-generic
Found kernel: /boot/vmlinuz-2.6.28-11-generic
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst ... done .....
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Jan 3, 2011
I installed on this laptop two OS : Windows XP SP3 with drivers for M11 from Toshiba download site Fedora 14 64 bits I have no problem running Windows but sometimes when I run Fedora I hear fan starting to run at full speed then computer hangs. When this occurs, I must power off it using switch then reboot and I lost my work. I try to run Memtest86 during a full night and I did not get any error or hang.
Is there somebody who already installed Fedora 14 on Toshiba Tecra M11? kernel is 2.6.35.10-74.fc14.x86_64 and my graphic card worked fine with hardware acceleration out of the box.
[Code]...
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Mar 10, 2010
I have 9.10 installed, grub has loaded and worked, now all of a sudden nothing will boot.The HP screen comes up and then the computer reboot, constant reboot cycle. Can't even get into the BIOS. It will just sit there if I hit escape. Won't boot the live cd either. What can I do??? It has worked fine for the past month now.
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Aug 22, 2010
basically, I had Ubuntu installed and decided to reinstall windows on the same pc on a partition on the same hdd. Now i need to restore grub to be able to boot Ubuntu.
I've done this a million times, what ive done is that ive inserted my old ubuntu 8.10 disc and followed this guide: http://ubuntuforums.org/showthread.php?t=224351 but now that wont work since 8.10 doesnt read ext4 which I upgraded to a while ago. (at least I think thats why it wont work in 8.10)
I downloaded the newest ubuntu to the same thing from that disc but when I type "sudo grub" it simply tells me that grub is not installed despite the fact that it is (and ubuntu 8.10 seemed to recognize that it was, it would just stop when i typed "find /boot/grub/stage1".
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Sep 19, 2010
when i changed the partion size on my new hdd when i booted up the computer it said grub 17 error and wouldn't load ubuntu
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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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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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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 5, 2011
i installed ubuntu 10.10 to my external HDD and it works. Recently, i reinstalled windows therefore, there is no more grub menu when my computer boots. I tried to reinstall grub to my external HDD but it doesn't work.
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Jul 28, 2011
I just added a 3rd hard drive, but now when I boot my computer grub doesn't load at all, it just boots to Windows. I've tried holding down Shift, and I've tried holding down ESC but it didn't work. I believe I have grub2.
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