Ubuntu Crack Rar Password

0 views
Skip to first unread message

Leoma Cianchetti

unread,
Aug 3, 2024, 12:01:57 PM8/3/24
to tiodeluvi

By default the first user's account is an administrative account, so if the UI is prompting you for a password it's probably that person's user password. If the user doesn't remember their password you need to reset it. To do this you need to boot into recovery mode (see also offical docs: RecoveryMode).

Boot up the machine, and after the BIOS screen, hold down the left Shift key (note that for UEFI BIOS you might need press ESC instead). You will then be prompted by a menu that looks something like this:

There is concern about this being a security vulnerability. It is not. You need to have physical access to the machine to do this. If someone has physical access to your PC, they could do far worse than change a password. When it comes to physical access, the battle for security is lost. Be wary of who you let on your PC.

Even setting a root password will not be successful, as one can simply boot with init being /bin/sh and have full root access. Again, given physical access, anyone with computer knowledge can do ANYTHING to your computer.

If you have a dual-boot (Ubuntu is installed next to Windows, another Linux operating system, or Mac OS X; and you choose at boot time which operating system to boot into), the boot menu should appear without the need to hold down the shift key.

After you select recovery mode and wait for all the boot-up processes to finish, you'll be presented with a few options. In this case, you want the Drop to root shell prompt option so press the ᛎ Down arrow to get to that option, and then press Enter to select it.

You'll then be prompted for a new password. When you type the password you will get no visual response acknowledging your typing. Your password is still being accepted. Just type the password and hit Enter when you're done. You'll be prompted to retype the password. Do so and hit Enter again.

If recovery mode is disabled, the method I would use is booting to a Live CD or USB. It could be the media you installed from or just another Ubuntu ISO you've downloaded and burnt. The process is fairly simple.

If you have a single-boot (Ubuntu is the only operating system on your computer), to get the boot menu to show, you have to hold down the Shift key during bootup. From the boot menu, select recovery mode, which is usually the second boot option. After you select recovery mode and wait for all the boot-up processes to finish, you'll be presented with a few options. In this case, you want the Drop to root shell prompt option so press the Down arrow to get to that option, and then press Enter to select it.

Then I got the Recovery Menu - but when I chose Drop to Root Shell Prompt (bottom item) I was root but couldn't reset the password - because the disks were Read Only. Type exitand get back to the Recovery Menu

Then again to Drop to Root Shell Prompt and I'm root and can write - sopasswd usernamehad me enter the desired password twice - then exit to go back to Recovery MenuResume normal bootand everything worked fine with my new password! I'm the only account on this box, and my password works with sudo so I apparently have Administrative Privileges.

I was having the same problem with my password and I tried everyone's suggestions but none worked for me. So I tried some of my own and this is what worked for me... "Keep in mind I can NOT explain why it worked, all I know is it worked...

Note: (Here is the part I can't explain. After trying everything, and nothing working, I finally just started trying all the options here one at a time. When I tried the "grub Update grub boot loader" and then followed the rest of the steps all was well and password was reset.)

The password is the second group of characters after YOUR_USERNAME, between the two colons. You can replace this with a other password, for example, you could replace the existing password string (truncated for clarity):

If you do that however and happened to have used an encrypted /home directory for that username you are likely not to gain access to the files in your /home directory (and if you do then Ubuntu should be uninstalled...)

For me, on Ubuntu 16.04 VM installed in VirtualBox, when I boot into (with shift held before booting the VM) the root prompt, I always get Give root password for maintenance (or type Control-D to continue), finally I hit e at the GRUB menu with the newest recovery kernel selected in Advanced Options for Ubuntu

If an individual has physical access to your computer, your data is already vulnerable. Unless your entire disk is encrypted, someone could potentially access your data using a live USB without even logging into your installed operating system.

By design, Ubuntu does not have a root password, and the root account is locked. During Ubuntu installation, the user account you create is granted administrative privileges with sudo rights, but this does not make you the root user.

Resetting and recovering your Ubuntu password can be a simple process if you follow the methods outlined in this guide. After resetting your password, ensure you take steps to secure your account and avoid password-related issues in the future. By following these tips and best practices, you can keep your Ubuntu system secure and continue enjoying a seamless experience.

Lo and behold, I log into my machine today, as every day, su root and it doesn't accept my root password any more. How could that possibly happen, assuming I didn't sleepwalk over to my machine during the night and change the password before going back to bed? Is it possible for me to regain control of this machine or is it game over?

I run a cron script which rsyncs to an external hard drive which wasn't mounted at runtime. rsync doesn't care what device/partition the directory is mapped to, so it went ahead and filled up /external_hd. Normally, /external_hd is the 1TB device sitting on top of my computer tower. But when it's not mounted (e.g. the external hard drive is not on), the directory is still there, so it writes to the / partition (by default it'd create the directory anyway, I believe). Next time I restarted I couldn't log in to Ubuntu, getting an error on user name/password. Once I deleted files, everything worked as expected.

All the Ubuntu flavors have the same username and password for every version.
All version of the base flavor has the same username and password.
All version of the server flavor has the same username and password.
Please read the release notes.

thank you it does show the password there unfortunately it DIDNT work for me. i had the base version installed and tied both root and ubuntu but was not able to log in so i abandoned it and tried the desktop version with 0 issues im using AML-S905X-CC 2 gb

Occasionally I will change the /etc/ssh/sshd_config and set "PasswordAuthentication yes" to allow someone to connect using a password. If they connect without the -i option specifying a key, it will prompt them for a password

You're framing this as an OS thing but the way I understand it Ubuntu itself has nothing to do with SSH, that would be handled by SSHD depending on what ssh daemon is running (I'm assuming OpenSSH Server, since that's typically what comes with Ubuntu).

A quick scan through the release notes didn't reveal anything that seemed to be of particular interest for your situation, it does seem to be a minor release, but I'm not sure how long you've been having this problem either.

Probably just check the SSHD version (ssh -V) on the machine that's giving the issue against what you were using before, and if it's different you can revert and see if that solves the problem or not. If it does, you'll probably have to dig deeper into the OpenSSH docs to pinpoint the actual root cause.

I stumbled on the same issue today.All documentation indicates to include PasswordAuthentication yes within /etc/ssh/sshd_config . on further investigation I noticed there's an include config option enabled. Include /etc/ssh/sshd_config.d/*.conf

This week, I wanted to check a Docker command within Docker itself. I have been working with the dockerd engine on my Windows WSL 2 installation. Although I had been working through the terminal in VS Code, I wanted to try using the Ubuntu shell.

I found I had 2 versions of Ubuntu installed, each with its own password, and later realized I needed to log into the WSL shell. I researched and located a helpful solution on Stack Exchange that I summarized for use again in the future.

I followed these steps for both versions of Ubuntu, and I was able to reset both passwords. Once I opened the WSL shell, I was able to use my Ubuntu 18.04 credentials to start dockerd and check the commands I needed.

try sudo password root. If you get an error message, adjust the command. If it asks for the old password, then you will need to try to do what SAM suggests. Usually root cannot SSH into Ubuntu. If he was a good admin, his account will have a different password than the root account and he may not have access to the ./etc/shadow file.

We are runnig ubuntu LTS 8.04. I can SSh into the server with his login but whenever I try to change his password with passwd it asks for the current one. I dont know it so I cant change it. Also I cant loginto the physical machine because I dont know the password.

If you have physical access to the machine reseting the password is simplicity itself. Reboot and select Recovery mode from the grub boot prompt. It will pop you out at the recovery menu one option (the bottom one afaik) is to give you a root shell.

Chose that and run the command passwd user replacing user with the account whose password you wish to change. Alternatively if you need your own shell account you could use the root prompt to create that then add it to the admin group so it has sudo rights.

c80f0f1006
Reply all
Reply to author
Forward
0 new messages