[OE-core] How to use WIC to generate raw flash images

[Ed Bartosh]

On Tue, Jan 24, 2017 at 09:56:17AM +0100, Mike Looijmans wrote:
> On 23-01-17 11:34, Ed Bartosh wrote:
> ...
> >>- How do I set padding to be 0xFF instead of 0x00?
> >The same thing here. Currently wic images are sparse files created by
> >os.ftruncate, but it's not a big deal to fill them with 0xFF
> 
> Correct me if I'm wrong here...
> - All flash media (NOR, NAND) prefers padding with 0xFF because
> that's equal to an erased sector.
> - Other media (magnetic disks) don't care about what they're padded with.
> 
> So I'd say it makes sense to make 0xFF the default padding for exerything?

That would break image sparseness.

--
Regards,
Ed