Hi, I am trying a simple dual-boot setup on my Lenovo Y500. Unfortunately, I am having a ton of issues, and bootloaders are not my strong suit. What's worse, the system is EFI, and I've never had luck with that.
Here's the deal.. I got my laptop with Windows 8 pre-installed. I decided to throw Ubuntu on there not long after, which wasn't too much of an issue. I shrunk the Win8 partition, added 2 partitions for Ubuntu and swap. The only problem was that I had to go into Lenovo's boot menu to select Ubuntu, because it booted straight into Win8 (More than likely since I just threw Grub into Ubuntu's partition)
Now the other day, I decided I wanted to boot straight into Grub, and choose either Windows or Ubuntu instead of having to go into the firmware menu each time.
I reinstalled Ubuntu and set the EFI partition as the target for Grub.. Lo and behold, it boots into Grub, but...
If I select Ubuntu.. a message appears "An error occurred while mounting boot/efi", and the output shows "unknown filesystem 'vfat'", so mount fails.
If I press 'S' to skip mounting, the login appears locked at 1024x768 (The max res is 1920x1080) and the mouse cursor does not respond (Using the mouse or touchpad). Completely useless.
If I select Windows, the usual failed to find 'drivemap', etc, message appears.
Using boot-repair from a live-boot fixes Windows booting from Grub. But Ubuntu still fails to boot.
I tried re-created the EFI partition, both fat16 and fat32. fat16- the screen simply stays purple. fat32- the same "An error occurred while mounting boot/efi" message..
Honestly, I have no idea how to tackle the issue.. Reinstalled Ubuntu several times. Even with Grub back inside Ubuntu's own partition, I can't boot into it anymore without the error occurred message.
So, sorry about the long post.. but does anyone know how I can get Ubuntu back to booting properly again? I can provide any information. I just would prefer not to wipe my Windows 8 partition, but am comfortable modifying any other partition.
To top it off, the new SSO login gave me a new forum account, even though the preferred email was set to the same one my old forum account used