The aren't stored on the system. The installation is usually removed.
Also, your friend's computer will, most likely, have different componants to yours, so not all of the updates are necassary (and you will need ones your friend hasn't got)
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This poetic animation about monsters is illustrated in a Van Gogh painterly style
How to get WWDC 2017 tickets
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.