evet grub'u güncelledim olmadı.
boot repair'i kuramıyorum.
şu komutu girince:
sudo add-apt-repository ppa:yannubuntu/boot-repair
şu hatayı alıyorum:
You are about to add the following PPA:
Simple tool to repair frequent boot problems.
Website: https://sourceforge.net/p/boot-repair/home
More info: https://launchpad.net/~yannubuntu/+archive/ubuntu/boot-repair
Press Enter to continue or Ctrl+C to cancel
Executing: /tmp/apt-key-gpghome.YfvqWrH62D/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 60D8DA0B
gpg: keyserver receive failed: Server indicated a failure