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Old 09-07-2012, 10:43 PM   #1
gr0undzer0
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Question EFI boot issue.


I installed Fedora 17 with efi and it hangs at boot. Used default settings on an SSD. EFI is enabled in the bios and the live cd boots from efi no problem.

My motherboard is asrock z68TM-ITX.

The boot is either straight to the bios or just says GRUBC.

Thanks in advance folks.
 
Old 09-09-2012, 02:41 AM   #2
Ztcoracat
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Hi:

I have about 5 hand written pages regarding UEFI and for me it's been very difficult to understand how to get around this efi system partition.

I found this website that discusses the instructions in regard to the Boot Repair-
https://help.ubuntu.com/community/UEFIBooting

Download it as a full bootable CD.
If you have Win's in UEFI/gpt mode all other install's need to be UEFI.

But if Windows is BIOS/MBR than all other installs need to be BIOS.
If drive is partitioned with gpt (not) MBR (msdos) and first partition is efi, then you are in UEFI Mode-

I found that for Linux to access UEFI Runtime Services the UEFI Firmware processor architecture and the Linux kernel processor architecture must match. It's independent of the bootloader used. If this match isn't in place it generates kernel panic.

Honestly, I am still struggeling to do this and it's partially why I haven't installed Fedora on my Vaio- I'm am not 100% certain that this is the remedy but I (think) it's very close-

Hope this helps.

Last edited by Ztcoracat; 09-09-2012 at 02:53 AM. Reason: Spelling
 
Old 09-09-2012, 02:51 AM   #3
Ztcoracat
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These are the sites I have been learning from:

http://www.uefi.org/home/
http://en.wikipedia.org/wiki/Unified...ware_Interface
http://www.extremetech.com/computing...os-replacement
http://www.zdnet.com/linux-developer...em-7000000909/
 
Old 09-09-2012, 11:16 AM   #4
gr0undzer0
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This does help. I was in the Fedora IRC a day or so ago asking this very question. It turns out that alot of Motherboards that used EFI did so when the efi standard was in draft. They empliment it slightly differently. The IRC seems to think that the reason my system won't boot after the install is because the efi on my motherboard has some code affecting the boot. I can see Fedora in the boot menu as an EFI but it just crashes instantly and pulls the EFI rom back up. Its frustrating that the cd can boot in efi mode though :P
 
Old 09-09-2012, 02:46 PM   #5
gr0undzer0
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edit: wrong post

Last edited by gr0undzer0; 09-09-2012 at 03:16 PM.
 
Old 09-09-2012, 02:55 PM   #6
Master_Simon
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Out of interest...

Have you seen the error I posted in the Fedora specific forum regarding my F17 issues?
Can you take a quick look and confirm to me yay or nay if they represent what you are seeing please?

Simon
 
Old 09-09-2012, 03:15 PM   #7
gr0undzer0
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I don't beleive this is the same. In my case I do not get past to the GRUB2 boot loader let alone past it and to file checking. It just hangs directly on boot and then shoots over to my EFI rom where you can change boot order and things.
 
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Old 09-09-2012, 03:25 PM   #8
Master_Simon
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Ok

You are right mine fails differently to yours.
Thanks for the prompt reply, I am currently trying another 64bit distro to make sure the hardware is not the error, I am sure it's SW but we need to make the the knowns are the only knowns we know about. Nothing worse than unknown unknowns...
Simon
 
Old 09-09-2012, 05:58 PM   #9
Ztcoracat
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Gr0undzer0:
I'm glad that the links I posted helped.

Here's an article about efi and Fedora:
http://fedoraproject.org/wiki/Features/EFI

I doubt if your motherboard had some kind of code affecting the boot. (anything is possible)
But if it does have some kind of code; think, what would a manufacturer have to gain buy doing that?
Most folks would just return the computer for a full refund.

You said;"It's frustrating that the cd can boot in efi mode" I feel for you- I am frustrated as well and running out of time and may have to return this Vaio to Sony because of this efi partition.

If we keep reading, looking, researching and keep plugging I believe that there is a solution to this. Or some way of getting this efi to comply with the kernel.

I'll continue to keep looking for answers and if I find one I'll post it for you.
I'm glad that what I have found has helped you some as I was concerned about that-

If you find the solution please post it.
 
Old 09-09-2012, 10:03 PM   #10
Ztcoracat
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I found a PDF that the Linux Foundation made.

The documentation mentions to lock down a secure boot using a platform key and a key exchange key to generate signed binaries.

In the section marked 'Dual Boot' it says:
"Extract the OS venders key exchange key and install it to the data base.This tool would be activated by the UEFI System as soon as it saw UN-authorised media inserted so the platform owner could decide whether they wished to accept the key for OS install and boot"

I'm not the expert here but I (think) this information is close to a solution.

This PDF is a good reference to the UEFI secure boot and how it can be implemented.

http://www.linuxfoundation.org/publi...open-platforms

Last edited by Ztcoracat; 09-09-2012 at 11:13 PM. Reason: Possible solution
 
  


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