Make Micro SD card bootable in windows


Is there a tool in windows that reliably marks the SD card as bootable to change the MLO? Or would it better to do it from virtual box ubuntu?


Actually neither.. It's best to boot into a native Linux
LiveCD/Install, and then copy the MLO with dd to the microSD..

Both Windows and VirtualBox add an extra layer that likes to corrupt
the microSD at that low level..


There is, to my knowledge, nothing in Windows that understands EXTn
file systems/partitions.


I have managed to resolve this using virtualbox and GPartedin ubuntu.