On Tue, 31 May 2005, Phil Dibowitz wrote:

> Oh, I CC'd the list but didn't include all the previous emails. The
> summary (though it can probably be pieced together from the above, I
> figure I should state it) is that the latest version of the firmware for
> the PL-3507 fixes the CAPACITY bug and thus linux sees one too-few
> sectors because of the US_FL_FIX_CAPACITY flag that is required for
> older firmware revisions.
> 
> The bcdDevice number does not change.
> 
> Also, as you can see above, upgrading firmware isn't an option for everyone.

The idea of robbing people of one sector doesn't bother me much.  The
standard partitioning schemes and filesystem layouts already rob people of
a lot more.

What does bother me is preventing people from using the last sector of a 
disk when they already have valid data stored there.  Assuming the updated 
PL-3507 chips don't get used in a context where the last disk sector could 
be written (for example, under a non-Linux OS) then leaving the 
FIX_CAPACITY flag won't hurt anybody.

Alan Stern



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