I have a problem. I have installed Windows 10 on
/dev/sda1 and Ubuntu 14.04 on
/dev/sda6. I use GRUB as bootloader but (I don't remember since when) when I choose Windows in the menu it does not boot and returns to GRUB.
I tried to reinstall GRUB but nothing worked so far.
If I run
sudo update-grub the system considers a Windows 7 bootloader and writes the menuentry. But why does it not boot?
I followed your instructions cl-netbox and reinstalled GRUB as follows:
sudo mount /dev/sda7 /mnt sudo mount -o bind /dev /mnt/dev sudo mount -o bind /sys /mnt/sys sudo mount -t proc /proc /mnt/proc sudo cp /proc/mounts /mnt/etc/mtab sudo chroot /mnt /bin/bash grub-install /dev/sda update grub
Now it does not return into GRUB after selecting Windows in bootmenu but Windows still does not boot. There is only a black screen showing _
Could that have something to do with the following message after executing?
Searching for Windows-installations was successful. Number of identified installations: 1  C:\Windows.old\Windows (sorry for bad translation)
I have updated from Windows 7 to Windows 10