3

I have installed Ubuntu besides Windows 8 on a ThinkPad.

Upon starting the laptop there are several entries to choose from the GRUB interface where I am not sure which Windows OS entry to use. What is the difference between those EFI and other Windows loaders?

image

Is there a redundancy? If so, how could I solve it?

Thanks in advance!

Byte Commander
  • 110,243
Aliakbar Ahmadi
  • 335
  • 2
  • 3
  • 10

2 Answers2

4

The Ubuntu entry will boot your Ubuntu system.

Advanced options for Ubuntu opens a submenu that allows you to chose which installed kernel version you want to boot and whether to use systemd (available and default since 15.04) or upstart. It also allows you to boot Ubuntu in recovery mode.

The EFI/ubuntu/MokManager.efi entry will boot a MOK Manager tool. MOKs are "Machine Owner Keys" which are used to sign boot loaders. This is needed if you want to enable your UEFI system's "Secure Boot" feature and add new trusted boot loaders. You will probably not need it as average use, it's easier to turn "Secure Boot" off.

System Setup will get you into your UEFI setup. You should be able to achieve the same by pressing a special key like Del or F2 (depending on your UEFI) before GRUB starts.

All other entries will pretty sure boot into Windows equally.

If you want to tidy up your GRUB menu by renaming, deleting or reordering some entries or putting them into submenues, you can do this most easily using a tool called grub-customizer. You can learn how to install and use it here: How do I customize the GRUB 2 menu?

Community
  • 1
Byte Commander
  • 110,243
2

Use Windows Boot Manager (on /dev/sda2) to boot into windows. The other options are only to boot in U/EFI mode. Check your bios as to which you boot . If it says automatic then disregard those options.

Feg
  • 171
  • 9