I was trying to dual boot elementary os with windows on my laptop (Asus Zenbook UX305). To do that I shrank the windows partition using the windows disk manager, and then used the Elementary installer's "install alongside windows" option to set up the linux partitions automatically. When I rebooted after installing I was put into the grub console. I was able to boot linux manually with the commands
grub> set root=(hd0,gpt4) grub> linux /boot/vmlinuz-3.19.0-26-generic root=/dev/sda4 grub> initrd /boot/initrd.img-3.19.0-26-generic grub> boot
and I found that running the command
grub> configfile (hd0,gpt4)/boot/grub/grub.cfg
would load the normal grub menu as is supposed to happen - so there don't seem to be any problems with the config file itself. I also found that the root and prefix are on (hd0,gpt1), so running
grub> set root=(hd0,gpt4) grub> set prefix=(hd0,gpt4)/boot/grub grub> insmod normal grub> normal
also loaded the normal grub menu. So possibly the problem is that grub is looking on the wrong partition?
In my BIOS, I have a choice between using grub and the windows bootloader to boot. Selecting the windows bootloader boots me directly into windows without any problems.
However, I can't find any way to get any fixes to stick after a reboot. I've tried rerunning
grub-install /dev/sda, recreating the config file with
grub-mkconfig, and using the Ubuntu boot repair gui tool - none of these have worked. Is there any way to fix this short of reinstalling either or both OSs? I'd rather not have to reinstall windows if possible.