3

I installed Ubuntu on 12.04 on my Samsung laptop alongside Windows 8. To install Ubuntu I disabled the bios security and enables CSM OS.

The installation went fine and Ubuntu works great. The problem is that when from the grub menu I select Windows 8 or Windows 8 recovery it doesn't load anything.

If I in the bios I enable the Secure OS option than I don't get the grub menu, but Windows 8 detect some error and after a while loads fine. Disabling again the Secure OS option in the bios, I get the grub menu and Ubuntu works fine.

What can I do to fix this and normally dual boot either Ubuntu or Windows?

Thanks a lot in advance, Luca

lucacerone
  • 1,690
  • 7
  • 26
  • 42
  • 1
    What is CSM OS? –  Jan 16 '13 at 17:22
  • have you tried - https://help.ubuntu.com/community/UEFI – Web-E Jan 16 '13 at 17:23
  • I'll try to use boot-repair and let you know, thanks! – lucacerone Jan 16 '13 at 17:52
  • 1
    Ok the boot-repair option seems to have fixed it. There is only one thing I can't understand, now in the grub menu there are a lot of entry that I can't fully understand like: some .efi and .bkp locations... – lucacerone Jan 16 '13 at 18:12
  • Does this answer your question? [Unable to boot into Windows after installing Ubuntu, how to fix?](https://askubuntu.com/questions/217904/unable-to-boot-into-windows-after-installing-ubuntu-how-to-fix) – karel Jun 22 '20 at 23:30

1 Answers1

3

Luca Cerone fixed the issue in a comment.

Ok the boot-repair option seems to have fixed it. There is only one thing I can't understand, now in the grub menu there are a lot of entry that I can't fully understand like: some .efi and .bkp locations...

Luca Cerone Jan 16

Community
  • 1
Seth
  • 57,282
  • 43
  • 144
  • 200