How to remove Ubuntu entries from UEFI

I 've got an issue with my UEFI boot values. In the past I installed Ubuntu 14.10 LTS as a dual-boot system. It was working ok, until I decited to remove it. I deleted the Ubuntu partitions and merged them with my Windows partition. Everything is working fine, except when I check the Boot Menu inside the BIOS, there is still a value considering Ubuntu.

https://i.sstatic.net/c8Vd2.jpg

I followed this guide: https://askubuntu.com/questions/63610/how-do-i-remove-ubuntu-in-the-bios-boot-menu-uefi but the value is still remaining there. Is there a way to completeley remove it without loosing the values that point to my Windwows system.

My Laptop is a Lenovo G50-70

Thank you in advance!

Solution

Boot a live Linux cd using legacy, have a USB stick with you.

Run lsblk to find out where your efi partition is
```
$ lsblk
```
Mount that efi partition and your USB stick to 2 separate folders (replace sda1 with the path of your efi partition and sdb1 with the path of your USB.
```
$ mkdir /mnt/usb
$ mkdir /mnt/efi
$ mount /dev/sda1 /mnt/efi
$ mount /dev/sdb1 /mnt/usb
```
Cd into the EFI folder of the efi partition
```
$ cd /mnt/efi/EFI
```
Move the folder "ubuntu" into the USB so you can restore it if something goes wrong
```
$ mv ubuntu /mnt/usb
```

Done!