Ubuntu :: Corrupt Sodoers And Unable To Boot To Single User To Fix?

Dec 24, 2010

So I was messing with my sudoers file and messed it up. I found this solution:http://ubuntuforums.org/showthread.php?t=140852But the grub menu doesn't appear on boot. Google finds that ESC, SPACE, TAB, and several other keys are supposed to bring the menu up. However none work and I can't edit the grub configuration without being able to sudo.

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Ubuntu :: Always Going Single User After Boot?

Nov 22, 2010

I'm running mythbuntu on 10.04 with an AMD athlon and nvidia geforce4 (nvidia-96) graphics. Shortly into the boot procedure, the system appears to switch into single user mode, killing all the processes I want running and dropping me into the recovery menu.

On 20 Nov I was having problems booting the system, which I traced to a probably loose sata cable to the (single) hard drive. While working on this I performed a normal system update, and then started having the problem described above. the update included

menu 2.1.43ubuntu1
libc-bin 2.11.1-0ubuntu7.5
plymouth 0.8.2-2ubuntu2.1
grub-pc 1.98-1ubuntu8
xserver-xorg-core 2:1.7.6-2ubuntu7.4
initramfs-tools 0.92bubuntu78

[Code]...

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OpenSUSE Install :: Can't Boot To Single User

Jul 3, 2009

No idea why this happens but on a couple of systems I'm unable to boot into single user, either as runlevel S or runlevel 1. This is true for the Failsafe image and the regular system image alike.

The major symptom is that it seems the initrd image is started and then the system hangs when it tries to transfer control to the inittab.

I am able to boot into the system with runlevel 2 or higher. I am also able to boot into the single-user rescue DVD image.

how to add the rescue DVD boot image to my secondary IDE drive so that I have a guaranteed way into the system?

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Server :: How To Boot Into Single User Mode With Openindiana?

Mar 7, 2011

does anyone know how to boot into single user mode with openindiana?

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Red Hat :: Single User Mode Without Boot Loader Password And Without CD?

Apr 10, 2010

I need to recover the root password or reset it. For this, I am trying to follow the following steps to get into the single-user mode & where exactly I am getting stuck: 1. Reboot the machine2. Press <esc>3. At the boot loader screen, i have 'Red Hat Enterprise Linux Server ($version info)' highlighted. 4. Simply pressing 'e' (for editing) does not work (does nothing). 5. I have the option to press 'p' to enter boot-loader password and then go into the single user mode.What if I don't know the boot loader password as well & I want to get into the single-user mode WITHOUT using a boot CD? Is this possible? If so, please share the procedure to do so.

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Ubuntu :: Boot Into Single User Mode Or Escape Out Of This GDM / X11 Fail Cycle?

Jul 3, 2011

I installed Ubuntu 11.04 and it refuses to show me a boot menu so I can select single user mode. When it does boot, it continues to cycle as X11 fails, but will not let me change into any of the consoles via control+shift+1-7 or control C or any command. X11/GDM continues to cycle as I hear my video card keep spinning up and down. In every version prior, after 3-4 fails it would give you a shell and say, ok it failed. how to boot into single user mode or escape out of this GDM/X11 fail cycle?

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Red Hat / Fedora :: Force Virtual Machine To Boot Up Into Single User Mode?

Mar 8, 2011

I have few virtual machines running on one of xen servers & I'm experiencing a problem booting up one of clients "domain".

How can I force this machine to boot up to runlevel 1? I can't see grub menu when first booting it up!

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Software :: Scripts Run At Boot Time With Debian Single-user Mode?

Apr 24, 2010

I am starting Debian in single-user mode since my video is not detected in X mode.
I would like to start a script at boot time with Debian. I flowed the instruction from this page [URL] but is not working.

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Red Hat :: Boot In Emergency Mode (not Single User Mode)

Mar 10, 2011

I need boot in emergency mode (not single user mode), from docs:

[URL]

in red hat enterprise 5 it's ok, not in red hat 6.

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Ubuntu :: Unable To Boot After Upgrade - System Ask For User Id

Jan 2, 2010

I have dual boot (wubi) Windows XP. It was working smooth until I upgrade ubuntu 9.10. At the boot screen I choose Ubuntu, then it ask me wich version, then it freeze. I tried the recovery version, but then it ask me for a user ID login and password. At this point I'm able to enter the user , but it don't type anything on the password and keep asking me to enter the user id and password again, and again.

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Ubuntu :: Accidentally Deleted - Stuck With A Corrupt Boot

Jun 26, 2011

I was on Windows and I accidentally deleted my Ubuntu install. Now when I boot I have Windows 7 and Ubuntu, and it's corrupt. So I went to add remove programs in Windows 7 and it just deleted the Ubuntu uninstaller (cause i deleted it) and now i'm stuck with a corrupt boot, how to remove it because I want to re install Ubuntu and it's annoying having 2 Ubuntu systems (one corrupt) and Windows 7 on my boot screen.

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Ubuntu :: Single App For X User

Jun 23, 2011

Is there a way that I can have a user on my Ubuntu 11 box that when logged in it automatically opens X program and nothing else, no window manager nothing, single program for that user only?Here is the scenario, I have 3 users, one is called Skype. I want when someone logs into the skype user no window manager at all be available to that user from the GDM and for xwin to automatically start skype up.

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Fedora Installation :: Unable To Boot Or Switch User To Root On Fc13

Aug 18, 2010

Having just installed fc13 and downloaded the KDE package I attempted to log out as user and back in as root, but I keep getting a message about the wrong password. This is odd as the same password works in terminal if I try to become a SuperUser. I have tried turning off SELinux to no avail. I cannot log in from cold as root,only as user.

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Ubuntu Installation :: Corrupt Master Boot Record Or Grub?

Nov 27, 2010

I think I managed to corrupt my master boot record, or have a very intractable problem with Grub.

I'm not sure how I did this, but my desktop will boot Ubuntu fine from a USB, but every time I try to install it, the install seems to go fine, but when I finish the install and the machine tries to boot the OS from it's hard drive, it does not work. The monitor does not get a signal and it just goes to sleep.

I tried posting here to resolve the problem before, tried everything on this thread: [URL]

But nothing worked.

I have even tried running the system from a USB, running a "shred" command for the hard drive and then reinstalling - my theory was that the shred command would destroy all the data on the hard drive anyway, and allow a "clean" install from whatever was corrupt on it, but no luck - when I installed Ubuntu on the hard drive, same problem.

I'm not clear where the problem lies now, I'm assuming there is something up with it's master boot record, but there are no partitions on it's hard drive and I started with a completely blank, unformatted drive.

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Ubuntu :: Get Into Single User Mode In 10.04?

Sep 7, 2010

How do I get into Single User Mode in 10.04?

The grub menu seems to be gone in 10.04, and the computer boots in 2 seconds. It's great that it boots fast, but there has to be some way to specify boot options?

/etc/default/grub says the timeout is 10, but that doesn't seem to be the case.

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Ubuntu :: Removing Single User From Gdm

Sep 18, 2010

I have a quick question that I haven't been able to find an answer for so far. Is it possible to 'hide' a user from the user list in gdm? Note that I don't want to remove it entirely, I just want a user that you can only get into by clicking 'other', entering your name and password.

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Ubuntu :: 10.04 / Vista Dual Boot - Missing Or Corrupt Info On Restart

Jun 19, 2010

This morning I attempted to 'clean' up some old files/programs from my dual mounted (Vista/10.04) laptop. All seemed ok until I tried to run Vista and I got the following:
/windows/system32/winload.exe
status Oxc000000F
missing or corrupt

I then tried to reboot into Ubuntu but it keeps trying to load windows. It looks like I have somehow lost my grub, so now I have lost Ubuntu and Vista. I tried my Vista Start Up disk and at the command prompt I entered:
Bootrec.ext /fixboot
Bootrec.exe /fixmbr
on restart it went back to the 'missing or corrupt' information. Is there some way I get get back to normal?

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Ubuntu Networking :: Create A Single User ISP Over DSL?

Oct 28, 2010

I have a good question. I have a friend that lives in an area where he cannot receive DSL or Cable internet. He has a phone line, and physically able to get DSL, but the company won't give him service. He has Verizon wireless, but the reception is bad and his service gets dropped too much.

I however, have DSL 3.0Mbps and want to know how I could get him a DSL modem to dial up to my server at my house and receive internet. I know that I would probably need two phone lines to do this, but apart from that.

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Debian :: Grub Corrupt After Dual Boot Install

Mar 22, 2015

Im currently not an linux expert so I turn to this forum after several attempts to fix my issue with grub.

I had a dualboot single HD with both win7 and win8.1 when I decided to install debian wheezy from usb.

I deleted the win7 partition and installed debian there. The partition scheme is separate /home

After reboot I automatically get into the "Grub rescue mode" and now I´m stuck.

I tried the commands:

set prefix=(hd0,msdosX)/boot/grub/
Insmod normal

I have msdos1, msdos3, msdos5 and msdos6 but nothing is listing anything from the grub rescue mode.

I get the "UNKNOWN FILE SYSTEM" error and cant get past that.

I also tried booting into rescue mode from usb iso install but nothing happens when choosing to repair GRUB.

The listed devices in rescue mode are:

/dev/sda1
/dev/sda2
/dev/sda3
/dev/sda5
/dev/sda6
debian uses sdb 1-2 and sdb1 is the only option to Reinstall GRUB on but it gives me "Unable to install GRUB in /dev/sdb1 This is a fatal error" message
/dev/sdb1
/dev/sdb2

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Software :: Corrupt GUI - KDE - Only On Cold Boot - Mandrake 10 - Weird ?

Apr 14, 2011

Summary: Video fault on boot when KDE starts, but only after being shut down properly and turned off. Rebooting yields a perfect boot, removing power while running yields a perfect boot.

I'm working on a very strange problem for a client and I think I've hit a brick wall. In a nutshell, when the system is booted up all indications are normal until the GUI starts. I briefly get an hourglass on a black background (it's normally blue) and then just a black screen with a corrupt line of randomness across the top of the screen. The weird part is that this ONLY happens after the system is shut down and turned off.

If I kill power after I get the corrupt desktop, it will boot into KDE just fine. Also, if I reboot instead of shutdown it will boot correctly.

For now, I've told them to boot up until it freezes/corrupts video and then perform an alt+SysRq+REISUB to reboot into a usable system. After that it works as expected, so they basically just have to start up and then reboot if they ever turn the equipment off.

The equipment rack has an identical redundant computer drawer as a ready spare, complete with a seperate hard disk and all. One hard drive came pre-loaded from the manufacturer and the other was loaded with the same software by the client from media provided by the manufacturer. I've swapped hard drives with no change and the client has reported swapping the entire computer with the ready spare with the same result.

The problem reportedly only surfaced a few weeks ago, but of course they can't think of anything that "happened" a few weeks ago. This is all new equipment less than a year old, but it may have been sitting in a warehouse for a few years before being installed.

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Ubuntu :: Disable Internet Access For A Single User

Jan 17, 2011

I have a Lucid Ubuntu installed on my home PC with two user accounts, AmHero and simple. I would like to have all internet access disabled when my kids login with the 'simple' userid. And yes, internet should work when I login using AmHero. I tried this:

[URL]

..but this does not work and gives some errors on the terminal.

I can paste the errors, though I am not sure this will even work as I found this in an old post.

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Ubuntu :: Disable Multiple Logins For A Single User?

Apr 5, 2011

I'm trying to disable multiple logins for a single user on Ubuntu 10.10 but I haven't been able to find a way to do this on this version

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Ubuntu :: Single User Stop Constant Login?

Jun 15, 2011

How can I, a single user, stop the hassle of having to constantly log in. Ubuntu 11.04 is what I currently using.

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Fedora :: Single User Mode?

Mar 22, 2009

what things can i do in single user mode?is there a guide out there can help me out how to navigate in single user mode?in links that focus only on user user mode?being in single user mode in other istro all the same? debian, fedora, suse. etc

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General :: Always Single User Mode

Aug 10, 2010

I've created Oracle Enterprise 5 Virtual machine. It was running fine but not sure what went wrong and now when ever I reboot the machine, it goes to single user mode. If I enter "init 5" command it boots to multi-user X11 mode without any problem.I checked inittab file and default line has id 5. So it looks OK. What else can be wrong?

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General :: Ssh Permissions For Single User?

Jun 10, 2011

I have a user that can ssh to every computer on our network expect for one. I verified that it has to be the account by having the user ssh from a different computer. the results were the same.

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Server :: Cannot Get Out Of Single User Mode

Mar 18, 2011

I am running redhat ES 5 on a dell server and recently, I ran into a snag where I was able to reduce a partition (ext3) but could not run resize2fs (mismatch between physical and logical blocks (i never found a solution to this). In any case I decided to log in a single user mode (appended 'single' at the GRUB loader prompt) and now I am always taken to this single user mode every single time I reboot and can't seem to get out of it. I have tried init 5 (runlevel that the system is set to boot into by default) but that does nothing (no message on the # prompt).Of course, I have 2 problems here:

1) partition issue
2) cannot log out of single user mode.

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Ubuntu Installation :: When Try To Boot / Displays Error Message Stating That Wubildr.mbr Is Missing Or Corrupt

Mar 28, 2010

I have currently installed Xubuntu via wubi on my windows XP. When I try to boot, it displays an error message stating that wubildr.mbr is missing or corrupt and I cannot boot into xubuntu.

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Ubuntu Installation :: Boot Sector Is Corrupt And WinXP Faces Reboot Loop After Trying To Install?

Sep 16, 2010

I tried to help my friend install Ubuntu 10.04 side-by-side with Windows XP on his Acer Aspire One netbook.Unfortunately, the installation process came to a standstill and it quit due to "unexpected errors". The second time I started the installation, I realized that the option for installing side by side was gone and that I could not mount the C: partition on Ubuntu. The error message is listed below:====================BEGIN ERROR MESSAGE======================Error mounting: mount exited with exit code 12: Failed to read last sector (299982847): Invalid argument

HINTS: Either the volume is a RAID/LDM but it wasn't setup yet,
or it was not setup correctly (e.g. by not using mdadm --build ...),
or a wrong device is tried to be mounted,

[code]...

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Ubuntu Servers :: Single User Mode Not Taking Password?

May 2, 2010

I want to fix my disks with fsck but using sudo init 1 is not allowing me in. It shuts my services down, then gives a "Give root password for maintenance" prompt. I've tried my password, but it rejects it.

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