[syslinux] [PATCH] isohybrid: Generate MBR even when in EFI mode

H. Peter Anvin hpa at zytor.com
Mon Mar 26 15:02:43 PDT 2012


On 03/26/2012 02:56 PM, Matthew Garrett wrote:
> On Mon, Mar 26, 2012 at 02:47:44PM -0700, H. Peter Anvin wrote:
>> On 02/15/2012 09:12 AM, Matthew Garrett wrote:
>>> Various EFI systems insist that there be no active flag in the pMBR in
>>> order to parse the GPT. The only way around this is to also generate a
>>> valid MBR - the firmware will then pick that up and use the system
>>> partition provided there. In order to deal with other EFI "sanity" checks,
>>> the partition type for the non-EFI partitions is set to 0 to skip the
>>> firmware bailing because of overlapping partitions.
>>> ---
>>>  utils/isohybrid.c |   54 ++++++++++++++++++++++++++++++++++++++++++++++++----
>>>  1 files changed, 49 insertions(+), 5 deletions(-)
>>
>> Hmmm... this patch doesn't apply to current master.  What baseline is
>> this from?
> 
> It was on top of fbf2edffba00b0f16a2fab2a9f9d0f2a7d40d5b2 which I think 
> was newest at the time. I can rebase.
> 

Nevermind, as I said, pilot error on my part.

	-hpa




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