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I have a superfast 500gb external SSD so I want to install ubuntu on that. First I downloaded Ubuntu 20.04.3 LTS ISO and created a bootable pendrive using rufus on a 8gb thumb drive. Then booted from the thumb drive. It says It is TRY NOW. I have to click on the install icon on the desktop to install the full Ubuntu. So I made 4 partitions on the 500gb external ssd(/dev/sda) using gparted =

  • a 100MB fat32 system efi partition(/dev/sda1),
  • an 2GB linux swap partition(/dev/sda2),
  • a 200gb main or root ext4 partition(/dev/sda3)
  • and a another 250 gb fat32 partition for my own storage.

Then I clicked the Install button on the desktop and selected the installation type to something else (because I have windows10 preloaded and not want to delete windows10.) after that I followed the 58bits.com's blog I'm putting it below:

Double click on the 100MB fat32 system efi partition we created (/dev/sda1)and choose ‘Use as EFI system partition’ but do not format the partition.
Double click on the /dev/sda2 partition and choose ‘Use as swap area’.
Then double click on the /dev/sda3 partition - and choose use as 'Ext4 journaling file system’, and set the mount point to / or root, and again do not format this partition.
Lastly - select the ‘Device for boot loader installations:’ to the name of the device for your external hard drive

Then I installed Ubuntu on my external ssd(/dev/sda). After all that it created a dual boot. It means I can boot my ex.ssd to that only laptop.

This is not that I want, I want to plug the ex.ssd to any pc in the world and just run Ubuntu and open my own documents and applications and after my work done I can unplug it. Like the "Try Now" of Ubuntu.

I know Linux is fully customisable so there must a way to do that.

muru
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Sou
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    Creating a Full Install of Ubuntu 20.04 to USB https://askubuntu.com/questions/1217832/how-to-create-a-full-install-of-ubuntu-20-04-to-usb-device-step-by-step https://askubuntu.com/questions/1332371/creating-a-pc-boot-able-ubuntu-installation/1332619#1332619 – Johan Palych Nov 07 '21 at 08:50
  • It is easier to make the installer select the external drive for the bootloader, if you unplug, disconnect or otherwise disable the internal drive. See thiis link and also the links suggested by other people to get different aspects of the problem and possible solutions. – sudodus Nov 07 '21 at 12:29

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