[ikk157]

Hello, 
I have lost access to my hard drive, it is damaged now. Currently I have no other hard disk to replace the damaged one. I have Ubuntu software in my pendrive, I can start live session of Ubuntu with it. But the issue is I lose installed apps in next boot.
Is there anyway to keep the updates on next boot while using live session?

What you’re looking for is referred to a live OS with persistent storage.

This guide shows you how to get it done: https://www.howtogeek.com/howto/14912/cr...ash-drive/

Just to give you a heads up, you’ll first need a working Ubuntu installation for you to get this done. So you can basically use your non-persistent Ubuntu live usb drive to create a persistent one on another usb drive.