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

[H. Peter Anvin]

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