Can I upgrade from Windows 7 to Windows 8.1 with ubuntu 13.10 already installed?
68120
Will upgrading Windows 8 to 8.1 affect Ubuntu?
119819
Will “Erase Ubuntu16.10 and reinstall” keep my Win7 installation?
12237
Attempted Installing Ubuntu on Windows 8.1 UEFI, Confused about booting in UEFI, Legacy Mode
139149
How to reinstall Windows 7 using in-place upgrade when the system is unbootable?
96248
Cannot Restore Grub After Windows 8.1 Upgrade
93918
Clean install Windows 8.1 or Windows 8 from OEM key
147472
Is it possible to completely opt of out the free Windows 10 upgrade? as it doesnt seem so
68597
Will upgrading Ubuntu remove installed software?
43778
Is it possible to "upgrade" from a 32bit to a 64bit installation?
71284
What are all the Windows 7/8/8.1 updates (KBs) I must skip to avoid Windows 10 upgrading -and nags-?
153774
Upgrade to Ubuntu 13.10 from ISO image
39901
How to install/upgrade to Windows 8.1 RTM without a Microsoft account
146496
Can I acquire a Windows 8.1 licence by free upgrade from 7 to 10, then downgrading
37628
Can I upgrade from Windows 7 32bit to 64bit without formatting?
141667
Is Windows 10 OEM Home upgrade to Pro possible?
3020
Dual boot windows 8 - ubuntu ; upgrading to windows 10
90878
Windows 8.1: Windows cannot be installed to this disk