On Wed, Jan 14, 2015 at 1:23 PM, William Hermans <[email protected]> wrote:
> @Robert C Nelson,
>
> Hey Robert, I am wondering where I should look to find out how you create a
> 1MB "hole" in the beginning of the bootloader ( MLO / u-boot, etc ) for the
> new Debian images. I do have a vague understanding of what to do, to create,
> but no idea of how to reverse this process, for when I wish to create an NFS
> rootfs to test future testing images.
>
> Could it be as simple as dd-ing the first Megabyte of the device ? In the
> past using your guide, it was really easy. Just put the bootloader files on
> a FAT partition, and then move the rootfs onto an NFS share - Instead of a
> second partition on the same sdcard. Now . . . not quite so easy.
Most partition utilities actually start with a 1MB offset (due to 4k
native drive), we just make sure to enforce it via sfdisk:
sudo sfdisk --in-order --Linux --unit M ${DISK} <<-__EOF__
1,,0x83,*
__EOF__
If you were to to change the above 1 to a zero, it would still default
to some offset above zero to make msdos/mbr happy...
Regards,
--
Robert Nelson
http://www.rcn-ee.com/
--
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