Windows – Install Ubuntu alongside Windows 10 on a separate physical drive

bootUbuntuwindows 10

I have Windows 10 installed on one physical drive and I want to be able to install Ubuntu on the second one but in such a way that I will be able to choose the operating system while the computer boots.

The manuals I found in the internet were not clear enough and I did not want to take "risks" because I need this computer up and running.

What is the correct way of doing so?

Thank you in advance!

Best Answer

There are many other options that can be changed during installation for different reasons and it is not possible to mention them all so it's just a basic guide And sorry for bad English!!!

  1. Create a live USB of Ubuntu using rufus on Windows
  2. Boot live USB ( change boot order if needed ) and select try Ubuntu (or you can select install Ubuntu your choice ) and start the installer
  3. Follow this guide now :https://tutorials.ubuntu.com/tutorial/tutorial-install-ubuntu-desktop#0 with following changes 
Installation type

choose the 'Something else' option.

Click on the desired partition ( on which you want to install Ubuntu )and press the change button


 - choose ext4file system, and mount point as / (i.e. root)

 Select the format box for the partition you selected

Create swap partition.To create a swap first select the partition to be used as swap and press configure button .From there set

 - use as option to swap area and partition type as Logical partition

It is advised by many that swap should be double of your system’s RAM size. 

Note for “Device for boot loader installation” :

For example if you are installing Ubuntu with sdb3 as root partition then select the whole disk i.e sdb for bootloader installation ; if sda2 is the disk on which you are installing then select sda for bootloader installation.

Click on install to start the installation and once done ,then boot from drive and you should get grub screen asking for which is Operating system to boot.

If something not clear or if things are missed out then will surely edit the answer.

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