Re: UEFI support from command line

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On 02/22/2013 08:46 AM, Michael Cronenworth wrote:
> Rami Rosen wrote:
>> Well, the first line, "efi: EFI v2.31 by American Megatrends",
>> is (almost for sure) from /arch/x86/platform/efi/efi.c (assuming this
>> is intel machine; you only replied that it is 64 bit machine, I assume
>> that it is intel).
>>
>> I am not sure that this indeed says that the EFI is active.
>> does efi_enabled() says that efi is active ? not sure.
> 
> The "sure" way of determining if you have booted via EFI is to check for
> the existence of the /sys/firmware/efi directory. If it doesn't exist
> you booted via legacy BIOS.
> 

Yes, it's an i7, quad core machine

# cd /sys/firmware
[root@sds-desk-2 firmware]# ll
total 0
drwxr-xr-x.  4 root root 0 Feb 21 10:13 acpi
drwxr-xr-x.  3 root root 0 Feb 22 14:09 dmi
drwxr-xr-x.  4 root root 0 Feb 21 10:12 efi
drwxr-xr-x. 26 root root 0 Feb 22 14:09 memmap
[root@sds-desk-2 firmware]# ll /sys/firmware/efi
total 0
drwxr-xr-x.  2 root root    0 Feb 21 10:12 efivars
-r--------.  1 root root 4096 Feb 21 10:12 systab
drwxr-xr-x. 90 root root    0 Feb 22 03:22 vars

When I bought it, I was nervous about the EFI stuff and make the store
manager personally tell me I could bring the system back if I couldn't
get Fedora installed. I don't think he knew what I was talking about,
but he got the sale.

-- 
-- Steve
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