On Mon, Oct 10, 2005 at 10:47:28AM -0700, Jason Thorpe wrote:
> 
> On Oct 10, 2005, at 10:09 AM, SODA Noriyuki wrote:
> 
> >>>>>>On Mon, 10 Oct 2005 09:21:52 -0700, Chuck Silvers  
> >>>>>><chuq@chuq.com> said:
> >
> >>all of the devices that I know of with such restrictions on  
> >>writing have
> >>a sector size of 512 bytes or larger, so this isn't an issue in  
> >>practice.
> >
> >Well, some older pc98 uses 256bytes/sector.
> >Of course, currently pc98 isn't supported by NetBSD, though...
> 
> Older HP-IB drives also had 256 bytes/sector.  The hp300 port's rd(4)  
> driver does all of the necessary fiddling.  It only matters if you  
> have file systems laid down on the disk that don't have 512-byte  
> alignment, which I have never encountered in the wild.

OS/9's "RBF" filesystem uses 256 byte sectors, and can be layed out with
256 byte granularity.

	-is
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