posix_io.c and this PXE error makes more sense in this context.

the Etherboot partition.

This version uses the gPXE driver API rather than the legacy wrapper API.

handle multiple sectors.

This reverts commit 844d088c51.

(including logical partitions).

other.

eventually get updated.

provides them.

now-obsolete pxe.c.

permanent processes, rather than requiring each one to have its own
initialisation function.