Ubuntu 12.10 not booting

**PraveenP** · November 8th, 2012

Hi, I downloaded 12.10 image and tried to boot from it. But whenever I try (irrespective of medium DVD/USB), it shows a message "secure boot not enabled" and screen blanks. I waited more than 10 minutes hoping it would switch to some second handler if any. But it didn't.

My machine is Lenovo Ideapad Z570, and it has no option to enable or disable UEFI. Please Help. Ubuntu 12.04, Mint Maya are working fine.

**alkh3myst** · November 8th, 2012

Hi, PraveenP. Did you use Startup Disk Creator to ensure making your CD/USB bootable? The image file alone can't boot your system. If you're already well aware of this, my apologies.

**newb85** · November 8th, 2012

I have no experience with Secure Boot, but here's what I've gleaned from a little net searching:

Secure Boot is a feature Microsoft requires all manufactures shipping their products with Win8 to put on their machines. It's designed to prevent a modified OS from booting, but has the side effect (or intended effect?) of preventing an alternative OS from being enabled.

I believe there should be a way to disable this in your BIOS, but as I said, I'm not familiar with Secure Boot.

Unfortunately, community support for Secure Boot is still somewhat lacking, as machines shipping with Win8 are still a relatively new phenomenon.

You may want to have a gander at this thread
http://ubuntuforums.org/showthread.php?t=2081670

**PraveenP** · November 8th, 2012

Originally Posted by alkh3myst

Hi, PraveenP. Did you use Startup Disk Creator to ensure making your CD/USB bootable? The image file alone can't boot your system. If you're already well aware of this, my apologies.

No, I am not. I remember old versions' images are bootable. I was able to directly reach live session from booting CD. I created my USB by UNetBootin. It is well capable of making bootable drives. I did create bootable drives for even Core plus and puppy using that software. More than that, if bios cannot find a bootable medium, it will display an error showing that. Here the error message is "Secure boot not enabled".

Originally Posted by newb85

I believe there should be a way to disable this in your BIOS, but as I said, I'm not familiar with Secure Boot.

Unfortunately, community support for Secure Boot is still somewhat lacking, as machines shipping with Win8 are still a relatively new phenomenon.

I think my BIOS is also not familiar with Secure Boot. And also it is not a windows 8 pc, I bought it in March, before this secure boot crap era.

**grahammechanical** · November 8th, 2012

Hi,

I would not be surprised if Secure Boot capable hardware was being sold before windows 8 was released.

Ubuntu 12.10 is the first Linux distribution that should install on a Secure Boot motherboard. This blog post might not make things any clearer. You should be able to install 12.10 without Secure Boot enabled.

http://web.dodds.net/~vorlon/wiki/bl..._Ubuntu_12.10/

Does the installer give you an option to use UEFI or BIOS?

Another thought has just entered my head. Perhaps this error message is nothing to do with the problem. 12.10 must check and report if Secure Boot is enabled or not. Perhaps the issue of the blank screen is to do with the video card.

You could try running the DVD with the nomodeset option selected.

Regards.

**newb85** · November 8th, 2012

Originally Posted by grahammechanical

Another thought has just entered my head. Perhaps this error message is nothing to do with the problem. 12.10 must check and report if Secure Boot is enabled or not. Perhaps the issue of the blank screen is to do with the video card.

I think you're right. Having not yet installed 12.10, I didn't know it would report whether secure boot was enabled on the hardware.

**PraveenP** · November 9th, 2012

Originally Posted by grahammechanical

Hi,

I would not be surprised if Secure Boot capable hardware was being sold before windows 8 was released.

Does the installer give you an option to use UEFI or BIOS?

It looks like my laptop machine is not Secure Boot capable. I cannot find an option to use UEFI or BIOS.

Originally Posted by grahammechanical

Another thought has just entered my head. Perhaps this error message is nothing to do with the problem. 12.10 must check and report if Secure Boot is enabled or not. Perhaps the issue of the blank screen is to do with the video card.

You could try running the DVD with the nomodeset option selected.

It has optimus. I tried both options "Optimus" and "UMA only". Failed.

Grub to is not loading (or not visible), so I am not able to add nomodeset there.

**bodueko** · December 30th, 2012

You are using an EFI enabled bios laptop... The problem is your bios.
Put in the disc and boot the laptop
Immediately the screen has backlit before it displays anything keep tapping F2
Navigate the tabs till you see override boot and select the medium of the ubuntu disc
This is with the assumption obviously that secure boot is turned off - You can double check that