1. If you have lost your Ubuntu installation media, you can reinstall Ubuntu from a USB drive or DVD.
  2. To reinstall Ubuntu, first make sure that you have the latest version of the installer available by running the ubuntu-release-updates command: sudo apt update && sudo apt install ubuntu-release-updates .
  3. Next, boot your computer from the installation media and follow the onscreen instructions to complete the installation process.

How to wipe Linux and install Ubuntu?

If you're having trouble with your Ubuntu installation, or just want to start fresh, this guide will show you how to wipe and reinstall it.

After following these steps, you'll have a brand new Ubuntu installation that's ready for anything!

7a) Under System Settings > Administration > Users & Groups , click on Add User . In the Add User dialog box, enter your username (e.g., ubuntu), choose an appropriate password , and click OK :Ubuntu is now registered as a user on this system . We can use it later when we need to perform administrative tasks . For now though, let's move onto wiping our system !7b) Under System Settings > Administration > File Systems , click on Manage Filesystems :Ubuntu is installed onto an ext4 filesystem ; we can delete it if we want . However, for now let's keep it intact so that we can reinstall Ubuntu later without losing any data :8a) Clickingonwill display all of our current partitions :We won't need any additional partitions at this point ; let's just delete everything except /boot/efi/ubuntu* :8b) To delete a partition , highlight it inand hitthebutton () three times consecutively:The first timewill ask if you're sure that you want to delete this partition ; answer with yes by pressing Enter . The second timewill ask if you wantto format or mount this partition before deleting it ; answer with no by pressing Enter again . The third timewill confirm thatyou wish to delete this partition :9a) To format or mount a partition , highlight it inand hitthebutton () three times consecutively:This will promptfor eitherformatting or mounting; choose whichever option best suits what you're trying to do (). Once formatting or mounting has completed (),right-clickonitand selectfromthe menu which will display allof its contents ):10a): Nowthatwe've wiped our system clean (), let's reinstall Ubuntu from scratch ! To do so,, navigate tothen selectfromthe dropdown menu ().

  1. Boot your computer into Ubuntu and open the Terminal application (click on the icon in the top-left corner of the desktop).
  2. Type "sudo apt-get update" and press Enter. This will download and install any updates that are available.
  3. Type "sudo apt-get upgrade" and press Enter to install any new software packages that have been released since your last update.
  4. Type "sudo apt-get clean all" to clean out all of the old files on your hard drive (this may take a few minutes).
  5. Type "sudo reboot" to restart your computer and apply all of the changes that we've made so far.
  6. When your computer restarts, log in as normal using your username (e.g., ubuntu) and password (e.g., ubuntu). You'll be prompted to create a new user account if you don't already have one; type "yes" when asked if you want to create a new user account . After logging in, open up System Settings by clicking on theicon in the top left corner of the screen:

How to clean install Ubuntu?

  1. If you are upgrading from an older version of Ubuntu, follow the instructions for installing Ubuntu on your computer.
  2. To clean install Ubuntu, start by downloading the installation media for your version of Ubuntu. You can find the installation media for most versions of Ubuntu at www.ubuntu.com/download/.
  3. Burn or mount the installation media to a USB drive and boot your computer from it. (If you are using Windows, see instructions below.)
  4. Follow the on-screen instructions to complete the installation process.
  5. After finishing the installation process, remove any old software installations and updates from your computer, if necessary.
  6. Launch ubuntu and check that everything is working as expected by running some basic tests such as opening a web browser and checking your email account settings .
  7. Finally, make sure that all of your data is backed up before you begin working withUbuntu: see our guide to backing up data inUbuntu..

How do I start over with a fresh installation of Ubuntu?

  1. Boot your computer into Ubuntu and select the "Install Ubuntu" option from the boot menu.
  2. Select your language and keyboard layout, then click on "Next."
  3. Choose your installation type: a desktop or server edition of Ubuntu will be different, so be sure to read the descriptions carefully before making your decision.
  4. Review the software pre-installed on your computer and make any changes you want (or don't want) before clicking on "Next."
  5. Enter your name and password for security purposes, then click on "Finish."

How can I reinstall only Ubuntu without loosing my data?

  1. If you have a Windows PC, boot into it and install Ubuntu using the installation media that came with your computer.
  2. If you have a Mac, launch the Terminal app and type sudo /usr/sbin/reboot to restart your computer.
  3. Boot into Ubuntu and sign in with your user name and password.
  4. Click on the System menu item and select Administration -> Software Updater from the menu that appears.
  5. In the Software Updater window that opens, click on Update Manager from the left pane and then on Updates from the right pane.
  6. On the Updates screen, click on Search for new updates in all repositories to open a search window (if it isn't already open).
  7. Type ubuntu in the search field at the top of the window and press Enter to display results that include both current releases of Ubuntu as well as backports of recent software updates for Ubuntu systems (this is an ongoing process; as new updates become available they will be added to this list).
  8. Select one or more of these updates to install by clicking on its checkbox(es) next to its name(s). When you've selected all of the desired updates, click Install Selected to begin installing them immediately (note: this may take some time depending on how many packages are involved).
  9. After installation has completed, reboot your computer so that changes can take effect .

Is it possible to reinstall only particular packages in ubuntu? If so, how?

Can I wipe my hard drive and reinstall ubuntu?If so, how do I go about it?Can I delete all the data on my hard drive and reinstall Ubuntu?If so, how do I go about it?

Reinstalling Ubuntu is a two-step process. The first step is to back up your data. The second step is to erase your hard drive and install Ubuntu from scratch.

To back up your data:

To erase your hard drive:

  1. Open the File Manager in Ubuntu.
  2. Click on the Devices tab at the top of the window.
  3. Right-click on your hard drive (or partition if you have more than one) and select Back Up… from the menu that appears.
  4. Follow the instructions on screen to create a backup of your data.
  5. If you want to keep any personal files on your computer after reinstalling Ubuntu, be sure to copy them over to another storage device before starting the installation process.
  6. Boot into Windows or MacOSX and connect your computer to power using an AC adapter if necessary.
  7. In Windows, click Start > All Programs > Accessories > System Tools > Disk Cleanup . In MacOSX, open System Preferences then click Disk Utility . Click Erase from the toolbar at the top of the window. (Note: If you are upgrading from an older version of Ubuntu, be sure to backup any important files before erasing your disk.)
  8. When Disk Cleanup or System Preferences asks what kind of deletion you want to perform, choose Quick Erase . Type in a name for your new disk (for example "Ubuntu"), select OK , and wait while Ubuntu wipes out everything on this disk! Be patient—this can take some time! Once it's done, restart your computer and continue with Step 4 below.
  9. To install Ubuntu onto this newly erased disk, boot into Linux (or use sudo dpkg -i /path/to/ubuntu-installer ) and follow these steps: a). Choose which edition of Ubuntu you would like to install (LTS or regular). b). Select whether you would like Grub installed or not c). Select where you would like ubuntu installed d). Choose which partitions should be used for /boot , swap , etc e). Press Enter when finished f ). After installation finishes rebooting into Windows or MacOSX will launch Unity instead of GNOME 3 as expected g ). You may need administrative privileges in order for some applications such as Firefox or LibreOffice Calc to work correctly h ). Log out normally when finished i ). Restart again into Linux by selecting Reboot Into Linux from GRUB's main menu j ). Connect external devices k ) Install any software that was not preinstalled during initial setup l ) Configure networking m ) Test applications n ) Quit application o ) Shut down computer p ) Disconnect external devices q ) Formatting will delete all userdata r ).

I would like to know the steps for uninstalling and then reinstallingUbuntu?

First, make sure you have the latest version of Ubuntu installed. To do this, open a terminal and type: sudo apt-get update && sudo apt-get upgrade If you are using an older version of Ubuntu, or if you want to install a newer version, see the following instructions.

To uninstall Ubuntu:

1. Open a terminal window and type: sudo dpkg -r ubuntu-desktop* 2. Type your password when prompted. 3. Press Enter to confirm the removal of all the packages associated with Ubuntu Desktop. 4. Restart your computer to finish uninstalling Ubuntu Desktop. 5. When your computer restarts, log in again and launch Terminal by typing:sudo terminal 6. Type in the following command to reinstall Ubuntu: sudo apt-get install ubuntu 7. After installation is complete, reboot your computer for the changes to take effect

To reinstall Ubuntu (if it has been removed):

1a) Log in as root user by entering the following command into Terminal:sudo su 1b) Type in the following command to reinstall Ubuntu from its official repositories: sudo apt-add-repository ppa:ubuntu-core/stable sudo apt-get update && sudo apt-get install ubuntu The default language for Ubuntus graphical interface can be changed by issuing one of these commands at startup time (Ubuntu 14 LTS only): en_US or es_ES 1c) If you would like additional software included during installation (e .g., LibreOffice), issue these commands after installing Ubuntu but before logging out and restarting your computer:(For more information on adding software during installation see here.) echo "deb http://ppa.launchpadlibrarian.net/ubuntu/core/ubuntu xenial main" | tee /etc/apt/sourceslist2 Launchpad does not provide a mechanism for automatically verifying signatures; therefore you will need to manually verify each package's signature using GPG or APT::Get::Signature(). For more information on how to do this please consult How do I verify signatures? Once all packages have been verified, type exit to log out of root and return to your normal user account.(For more information on how to log out and login see here.) Finally type reboot followed by y at the prompt when asked whether you wantto restart now or wait until later.(For more information on rebooting see here.) 2a) In order for updates from Canonical's repositories—which include security updates—to be applied while running an updated version ofUbuntu, first close any open applications that may require access to network resources(such as Firefox). To do so enter:(for 32 bit versions)(or)(for 64 bit versions))into Terminaland press Enter 3a) If you would like certain applications not installed by default during reinstallation (such as Skype), they can be addedby issuing one of these commands at startup time:(for 32 bit versions)(or)(for 64 bit versions))intoTerminaland pressing Enter After adding any desired applications run this finalcommand:/usr/share/doc/ubuntustudio*/HOWTO_Remove_Programs_After_Reinstallation NOTE : Any changes made whilethe system is runningwill NOTbe saved unlessyouissue afirstcommandlineaftermodifyinganyfiles Note :ThedefaultlanguagefortheGraphicalInterfacecanbethis:(en_USores_ES).Ifyouwouldlikethedifferentlanguagerunthiscommandsatstartuptime(Ubuntu14LTSonly):echo "deb http://ppa.launchpadlibrarian...ian main" | tee /etc/apt/sourceslist2 4a) If required , use Synaptic Package Manager tool located under Applications > System Tools > Synaptic Package Manager .