General :: Forgot Superuser Password - Cannot Login As SU
Mar 2, 2010
We use a linux (centOS I believe) cluster for our research. My professor somehow forgot the new password he set for root, and now can't login as 'su'. What is the way (or best way) to reset the root password without damaging something. I don't know whether it's even setup for 'sudo'. What will the procedure with and without 'sudo'?
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May 8, 2009
I just installed Fedora 10 on my laptop 2 days ago. I dont seem to remember the password i userd for my username. Is there a way to reset or change the password? I cannot login to the system.
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Feb 19, 2010
I opened my note book. I have installed XP, Ubuntu. When I boot, I select ubuntu os. But I forgot my Password. How to recovery or reset my password?
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Jul 28, 2010
I am new to ubuntu and I've installed it but I didn't use it too much. Now I was trying to login into ubuntu but I forgot the root password. Can I login into ubuntu or change the root password. I didn't make any other user than the installation were asking me. If I try to reinstall the ubuntu, the setup will help me to choose the same partition (to overwrite on the previous ubuntu)?
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Feb 4, 2011
I am using 10.04 ubuntu and I have forgotten my password to login to a ssh tunnel. It is not the root password on my computer. Is there any way I can find the password out, change it, or just start over and create a new one? I know it isn't a connection problem because I can't login to ssh from localhost either. I've tried reinstalling ssh too.
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Aug 26, 2010
I have a problem with my ubuntu account. I am running 4 virtual machines, based on jeos-8.04 and I am using a public key authentication to login to my account (via ssh). This is not the problem, I have the key and the passphrase. But when I am logged in, I can't sudo, because I forgot the password for the accout.
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Jul 2, 2010
i forgot root password and how to change the password
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May 19, 2010
My father put a new superuser password on my laptop, and now I cant access my computer without him putting the password in. How can I get rid of his superuser control? Can I delete or change the superuser thing.
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Feb 8, 2011
I have a regular password and a masterpassword, but sometimes I am being asked for a superuserpassword? I have no scripting experience and a very basic idea of how linux works. I am trying to get enough of a handle on this OS, so I can use it comfortably.
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Jul 29, 2011
I have never set up any other password, yet I'm asked for Root password and therefore locked out from superuser.This is my own personal computer at home and there is no other O/S installed.My password works for almost anything else I've needed it for so far but I can't install my printer driver, or access su, or any of its other related privileges
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Jan 10, 2011
This is an old question asked many times, which, however, is NEVER answered directly in any manual I've checked. So...I'm writing a bash install script (instead of a rpm or .deb package) that must be run by a normal user. change to superuser (asking for password and receiving it) and the rest of the script to be executed in the superuser mode in order to install what I mean to install.I know how `sudo ...` or `su `root"..."` or `gnome-terminal -e ...` can achieve this purpose by creating certain batch files and then give them as argument to these commands. That's NOT what I'm asking, however.I want to know how I can make the script interactively switch to superuser mode and go on running the rest of the script (can be a lot of code) in that mode. I don't mind if it oens a separate terminal window to do that; just how can that be achieved?
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Jun 16, 2010
How can I get root passwd when I forgot it?
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Jan 28, 2011
I've gave my son (7yrs) my old Eee PC 4G and he changed by istake the user password and forgot the new password.How can I overwrite the password?The only password I have is the BIOS Supervisor password...What can I do?Easy fix is preferred because I've no clue re Linux.Even formating and reinstall would be an option. (all data are on SD)I could boot from USB or SD but don't know what program I need and were to get it from
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Feb 12, 2011
Its been since October since I accessed my Arch OS, due to a career and phical move. Since that time I forgot my username and password (including root).My question is, is there a way to get around it without starting from scratch? Oh yeah, mbackup live CD is 700 miles away! lol I can only guess what the answer is going to be.
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Sep 8, 2010
I am trying to use Ubuntu 10.04 update, but have forgotten the password. If I could get the GRUB prompt, I could use a method I picked up somewhere, but where is the GRUB prompt, which I understand is a bootloader? My installation is single installation on a single partition. I press ESC before the Splash Screen, but just get a square bracket and pressing ESC makes no difference, to the continued boot process, except perhaps make it a little slower. I can use the Desktop and the software I use works fine. There is also something about a 'ring' that requires a password, which I also don't know.
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Aug 13, 2010
I have tried: booting into single user mode (using '1' and 'single' in my bootloader edits) and it still ends up kicking me to the 'myBox login:' prompt booting from a live-CD with no luck - seems my CD drive is hosed, or the system just won't boot the CD
This is a system I set up, literally, years ago, with no need to touch it. It was originally set up as a file server, running SAMBA. I am wanting to add CUPS to it, and possibly a web server if it will handle the load. Currently, it is running Debian 4.0 without a GUI.
My next step, if I can't get into the root account, is to install a new OS (and try to salvage the file shares that exist). I just would rather keep the install that I have, but I need to hack/crack or change my root password.
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Sep 25, 2010
I have a friend that tried to change her user password on Windows, and now can't log in to her account. Of course it's the only user account on the computer. Are there system recovery tools on any Linux liveCDs that could change the passwords of Windows user account?
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Feb 15, 2010
My computer was working this morning and both hard drives were working fine, then all of a sudden for about two hours I was stuck with this "problem", then after fumbling and moving and stablizing things, then Windows works? See below for details. I've finally reinstalled both hard drives, but the one with the Linux partition doesn't work: it says nothing is discovered on the disk. I can't login at the LUKS login after grub starts, therefore I can't get into Linux, but Windows works?! I used to be able to go directly into Grub when the computer starts, I forgot how to do that but it doesn't matter. If you need details I'd be glad to provide them. I just wondered why Linux doesn't work, but Windows does. I have Linux & Windows on two different separate hard drives
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May 24, 2010
I want to login as root in GUI just like login as normal user, how this can be achieved. i tried giving root and its password but failed. i dont want to go from terminal. just want to know how this can be done.
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Jan 1, 2010
I forgot my ubuntu password, trying to follow the instruction on the web but keep fails to recover my password.
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Feb 21, 2010
I am running the latest xubuntu and I lost my password or so I think I might be typing it wrong, is there way to recover it (easy please).
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Mar 11, 2010
I forgot my usrename and password to get in what can I do?
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Oct 25, 2010
I read a few pages on how to get my password or reset or whatever and the pages don't apply to Ubuntu 9. They seem to describe older versions of Ubuntu and as i haven't done this before i have no idea where to go with it. One site suggested i add a line into an edit page after getting into the recovery mode but i can't see how. I am using a livecd to post right now. I forgot the password because it took forever for me to get my replacement motherboard after frying the previous one.
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Dec 3, 2010
Does any know if there is a way to recover or reset my password. Its the only account on the desktop.
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Aug 30, 2010
Im trying to get into my system for first time in 2 years, i've forgotten all of my login info.. is there a back door..BTW ive never gone behind the scenes with this o/s before
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Oct 16, 2010
Having to write my user password every time I want to do anything. I DO know I'm doing something risky for the system, that's why I have Linux. Is there a way to avoid to rewrite the password again and again, like start with superuser permissions?
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Sep 17, 2009
Forgot root password on fedora 10. Reboot into runlevel one and changed passwd and it said all tolkens updated. Typed exit and it didn't reboot and at login screen I logged in as other "root" and it didn't work with new password. So I redid the runlevel 1 and password change and typed init 6. It didn't work after that also. How to change fedora 10 root password if the old password is forgot?
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Sep 21, 2009
what does one do when he forgets the root password ? i still have a terminal logged in as root how can i change the password in terminall
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Apr 13, 2010
My root has chosen its own password for me as the chosen by me doesn't work.
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May 21, 2010
Forgot my password, how to recover or change it?
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