Well, I've got a new lappy. Its preinstalled with Ubuntu and windows 8.1. I want to triple boot it Windows 10. So I've heard that if one installs Windows later, it ignores grub... Is it true? I still want to boot windows 10 with grub2
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2It tends to ignore Ubuntu altogether, so be careful... – Bruni Sep 19 '16 at 10:14
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1Possible duplicate of How can I install Windows after I've installed Ubuntu? – David Foerster Sep 23 '16 at 08:15
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Yes, this will cause issues, but usually it's nothing that's too hard to repair.
When you install Windows, it will overwrite GRUB, and make it so you can only boot to Windows. Luckily, boot-repair (available from community.ubuntu.com) usually reinstates GRUB as the default bootloader.
Sometimes GRUB won't have an entry for Windows. If this happens, boot Ubuntu and run sudo update-grub.
TheWanderer
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