Will BigSur Beta update do a fresh install or upgrade Catalina?
87984
Can I fresh install a Beta version of macOS?
120229
Understanding various update and upgrade commands
67359
Upgrade to the latest PHP version in Ubuntu
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
84053
Is upgrading from LTS to LTS as reliable as doing a fresh install?
87906
Why does OS X want me to "upgrade" from El Capitan to Yosemite Beta 4?
151654
Can we have an updated beta (TestFlight) app?
11780
How can I download the macOS Big Sur installer on a Mac which is already running Big Sur?
134118
Why not include something like Ksplice so there is no need to reboot after updating?
15687
How do I resume a release upgrade?
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
98421
How will people upgrade from 12.10 to later releases after 13.04 is EOL?
101714
Is there any way to roll back the most recent upgrade?
125703
Is there a way to run an update and upgrade in one command?
106321
Finding out if upgrading to a newer macOS version will cause issues?
35146
Will apt-get dist-upgrade upgrade my system to newer version?
16526
Should I upgrade to the "mainline" kernels?