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Problem was pretty nasty, because I could not start my Ubuntu 14.04 system. Grub multiboot was functioning well for year. I did not do anything that should cause problems, only using windows 10 system and also Ubuntu before fail of GRUB. After that only windows 10 could boot . In answer section I show my possible solution but I just want to ask, if you know what was source of the fail of starting GRUB.

log before repair (I do not know what it means): http://paste.ubuntu.com/23507441/

log after repair: http://paste.ubuntu.com/23508013/

weatherman
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1 Answers1

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I respond for this question: What to do to start damaged GRUB. As I am pretty newbie I just googled and it worked well. My notebook is Lenovo G50.

1) get functioning live linux system. (in my case Ubuntu 14.04 live on USB)

I think this is proper help in English: (https://help.ubuntu.com/community/Installation/FromUSBStick)

2) then using Boot-repair utility. (totally new for me)

https://help.ubuntu.com/community/Boot-Repair

which was quite straightforward to install and launch.

3) I have NO guarantee it will work.

4) Both system start from GRUB. But in menu there is more choices than it used to be. (Recovery modes which I do not know).

weatherman
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