Install Single boot ubuntu 20.04 keeping existing sensitive data safe in NTFS partition

This article is for those users who wish to install single boot ubuntu 20.04 with existing NTFS Partition on there hard-drive but do not wish to keep the previous windows OS except want to keep sensitive data safe in the machine.

Note: I am assuming you have ubuntu 20.04 Focal fossa ISO dowloaded from official website and is burned on bootable USB stick.

1. Insert your Ubuntu 20.04 bootable USB stick in USB 3.0 port of your machine properly and restart your machine.
2. At restart, you may press F2, F8, F9, F10, F11, F12 if BIOS does not automatically boot via USB. Try to Boot your system via USB stick and chose ubuntu(Mostly the default option).
3. After a successful boot, Ubuntu 20.04 will check for system files(Mainly disk). You may press CTRL+C to cancel this step however i recommend you to wait for a while and after completion if it showed you any errors abort the installation and using the same ubuntu 20.04 ISO make your USB bootable again and again till the errors are removed. After successfull attempt without any error. On
4. Next screen, you will see the welcome screen from ubuntu 20.04.

Here on welcome screen, you can find Try ubuntu feature without making any changes to your computer. This feature is very important feature of ubuntu and you can do anything. However, you will be unable to keep your browsing history and all of the session files will be deleted once you shut down your system. We will use this feature too in installation, as of now skip try Ubuntu and follow the next instructions:

1. Click ON install ubuntu.
2. Next, Chose your keyboard layout and click Continue.
3. Now Ubuntu will ask you to chose an option to start from normal installation(Web browser, utilities, office software, games, and media players) or minimal installation(Web browser and basic utilities). Chose default normal installation and unselect any other checkbox options like download updates while installing ubuntu or install third-party software for graphics and wifi hardware and addiotional media formats as selecting these checkbox will require good internet connection and also this tutorial is limited to installing single boot ubuntu 20.04 along with existing NTFS partition. Click Continue.
4. In installation type screen, select something else(you can create or resize partitions yourself, or choose multiple partitions for ubuntu). After selecting the above, Please Continue to next screen.
5. Here you can see your existing disk partitions which you have configured earlier while using previous OS in your machine.
6. Find, free space from the device and click on + icon from the below options.

If screen already showing free space above 30,000MB, can leave deleting the NTFS partition. However, the system will dual boot. As this particular tutorial is dedicated to installing the ubuntu 20.04 while keeping the existing data safe stored in previous NTFS partitions. Delete all NTFS partition except the NTFS partition you think is necessary and contains your sensitive data. Also, deleting the unwanted NTFS partition will yield more free space and we may use this free space for installing single boot ubuntu 20.04 along with NTFS partitions.

1. A pop-up will appear asking to create a partition.
2. Chose size: 22,000MB atleast.
3. Type for the new partition: Primary.
4. Location for the new partition: Begining of the space.
5. Use as Ext4 journaling file system.
6. Mount Point: /
7. Press OK
8. This will create a root in which our ubuntu OS will be installed.

Similarly, create 3 more partitions.

1st part of size:4999MB with logical as type of new partition and use as SWAP AREA.

2nd part of size:50MB, logical and use as EFI partition.

3rd part of size:2024MB, logical, Ext4 journaling file system and mount point as /boot

Also, remember the device type of all created partition like /dev/sdaX. Note: We will use this device in later section.

After following these steps, click on Continue and accept the changes.

Next, Select your time zone via map.

Then, provide some information like your name, your computer’s name, username and password. Next, Click on Continue.

Finally if all steps were followed correctly, ubuntu will show a successfull message and ask you to chose restart now.

Once, it says remove the bootable USB. After removing the stick, press ENTER and reboot.

HURRAY you have succesfully installed the ubuntu 20.04 on your machine.

• ++Additional steps(Might be needed for some users but in order to solve them, logs and information must be provided)
• Have you encountred with GRUB/RESCUE mode after installing Ubuntu 20.04??
• You can only use ls and set from GRUB_RESCUE. even insmod and linux commands not working in GRUB_RESCUE??

IMPORTANT: you do not need to re-install the ubuntu 20.04 at all. Its just sometimes unique bug occurs to all and this can be eliminated.

Please create your account and describe your problem in comment section below if you are experiencing issues after installing ubuntu 20.04 for a quick response.