[syslinux] Linux syslinux-3.72 does not update boot block for SD devices

Jim Fridlund jim at code4fun.us
Sat Oct 25 15:50:41 PDT 2008


Hi Peter. Thanks for the tip!
--
Jim

On Oct 25, 2008, at 2:12 PM, H. Peter Anvin wrote:

> Jim Fridlund wrote:
>>
>> The ldlinux.sys gets created, but it does not update the MBR. I am
>> able to make a bootable USB thumbdrive just by running 'syslinux / 
>> dev/
>> sdb1' and I was expecting the same behavior on the SD flash.
>>
>> If I run the command from Windows, it does update the MBR. I ran:
>>
>> syslinux -m -a e:
>>
>> The MBR changed and the SD flash is now bootable.
>>
>> Is there another step I need to do to get syslinux under linux to
>> work? Any help greatly appreciated. Thanks in advance.
>
> dd if=/usr/lib/syslinux/mbr.bin of=/dev/sdb bs=440 count=1
>
> The reason this isn't automatic is that this is sometimes not possible
> under Linux.
>
> 	-hpa
>
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