Upgrading from ubuntu 12.10
12578
How do I upgrade to a newer version of Ubuntu?
132293
If I can, how do I install Ubuntu from Ubuntu?
153774
Upgrade to Ubuntu 13.10 from ISO image
120337
Is it possible to get Windows 10 upgrade as an ISO image (to make a bootable install disk from)?
129589
Migrating from Windows XP to Ubuntu
14631
Can someone clarify Ubuntu (Debian) dist-upgrade for me?
142143
Install Ubuntu 12.10 instead of Windows 8
100141
Is there any "official" guidance to upgrading from Lubuntu 18.04 LTS (LXDE) to Lubuntu 18.10 (LXQt)
24165
Upgrade to version newer than repositories
90512
Upgrading from 12.10 WUBI install to 13.04
77159
How do I upgrade to Windows 10 if I have less than 8 GB free?
12614
Upgrade problem
13970
Why am I not getting the Ubuntu 18.04 upgrade?
72296
Upgrading Ubuntu from 12.04 to 12.10 broke my system, completely.
140371
Update Ubuntu 10.04
31506
How do I update Ubuntu manually?
132533
back-up: which patitions to back-up before upgrading/reinstalling