"Stephen C. Tweedie" wrote:
>
> You simply cannot do physical disk IO on
> non-sector-aligned memory or in chunks which aren't a multiple of
> sector size.
Why not?
Obviously the disk access itself must be sector aligned and the total
length must be a multiple of the sector length, but there shouldn't be
any restrictions on the data buffers.
I remember that even Windoze 95 has scatter-gather support for physical
disk IO with arbitraty buffer chunks. (If the hardware supports it,
otherwise the io subsystem will copy the data into a contiguous
temporary buffer)
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This archive was generated by hypermail 2b29 : Wed Feb 07 2001 - 21:00:21 EST